1	"Bark rough, persistent over entire trunk."	2
1	"Bark smooth on trunk."	170
2	Ironbarks.	3
2	"Bark not ironbark."	25
3	"Stamens with filaments regularly inflexed, anthers cuboid."	4
3	"Stamens with filaments irregularly flexed, anthers globose."	17
4	"Adult leaves strongly discolorous."	5
4	"Adult leaves concolorous or weakly discolorous."	6
5	"Fruit 4-angled."	"Eucalyptus fergusonii"
5	"Fruit not angled."	"Eucalyptus paniculata"
6	"Calyptra scar present."	7
6	"No calyptra scar present."	16
7	"Adult leaves glossy."	8
7	"Adult leaves dull."	9
8	"Longest petioles <20 mm long, largest adult leaves <15 cm long."	"Eucalyptus placita"
8	"Longest petioles >20 mm long, largest adult leaves >15 cm long."	"Eucalyptus ancophila"
9	"Adult leaves <1.2 cm wide."	"Eucalyptus beyeriana"
9	"Adult leaves >1.2 cm wide."	10
10	"Adult leaves green or grey-green."	11
10	"Adult leaves glaucous."	14
11	"Fruit 4-angled."	"Eucalyptus tetrapleura"
11	"Fruit not angled."	12
12	"Juvenile leaves glossy green."	"Eucalyptus ancophila"
12	"Juvenile leaves dull, grey-green."	13
13	"Juvenile leaves lanceolate, 15–20 cm long."	"Eucalyptus fusiformis"
13	"Juvenile leaves narrow-elliptic to elliptic, 3.5–9 cm long."	"Eucalyptus scopulorum"
14	"Fruit shorter than broad; adult leaves rounded."	"Eucalyptus panda"
14	"Fruit longer than broad; adult leaves acute."	15
15	"Adult leaves broad-lanceolate to ovate."	"Eucalyptus caleyi"
15	"Adult leaves narrow-lanceolate to lanceolate."	"Eucalyptus fusiformis"
16	"Inflorescences 3-flowered."	"Eucalyptus tricarpa"
16	"Inflorescences >3-flowered."	"Eucalyptus sideroxylon"
17	"Adult leaves opposite, ovate to orbiculate."	"Eucalyptus melanophloia"
17	"Adult leaves disjunct, broad-lanceolate or narrow-lanceolate."	18
18	"Valves distinctly exserted."	19
18	"Valves not distinctly exserted."	22
19	"Buds glaucous."	"Eucalyptus nubila"
19	"Buds not glaucous."	20
20	"Calyptra more than twice as long as hypanthium."	"Eucalyptus fibrosa"
20	"Calyptra less than twice a long as hypanthium."	21
21	"Disc flat."	"Eucalyptus ophitica"
21	"Disc depressed."	"Eucalyptus siderophloia"
22	"Calyptra rounded or obtuse; juvenile leaves linear to narrow-lanceolate."	"Eucalyptus crebra"
22	"Calyptra conical, acute; juvenile leaves orbiculate to broad-lanceolate."	23
23	"Buds glaucous."	"Eucalyptus nubila"
23	"Buds not glaucous."	24
24	"Juvenile leaves broad-lanceolate to ovate, apex acute or obtuse."	"Eucalyptus siderophloia"
24	"Juvenile leaves orbiculate, apex rounded."	"Eucalyptus fracta"
25	Stringybarks.	26
25	"Not stringybarks."	70
26	"Fruit pyriform to conical, flat-topped; inflorescences aggregated or paired."	27
26	"Fruit not as above; inflorescences usually solitary."	28
27	"Inflorescences axillary, often paired; calyptra scar absent."	"Eucalyptus fastigata"
27	"Inflorescences aggregated at shoot tips; calyptra scar present."	"Eucalyptus microcorys"
28	"Fruit ovoid to urceolate and disc strongly depressed."	29
28	"Fruit hemispherical to globose or ovoid; if ovoid then disc not strongly depressed."	33
29	"Fruit ribbed."	"Eucalyptus planchoniana"
29	"Fruit smooth."	30
30	"Adult leaves concolorous."	"Eucalyptus obliqua"
30	"Adult leaves strongly discolorous."	31
31	"Fruit 4-lobed at top."	"Eucalyptus baileyana"
31	"Fruit not 4-lobed at top."	32
32	"Buds and fruit sessile."	"Eucalyptus botryoides"
32	"Buds and fruit pedicellate."	"Eucalyptus robusta"
33	"Leaves with lateral veins obtuse, reticulation dense and regular, juvenile leaves glabrous."	34
33	"Leaves with lateral veins acute, reticulation sparse and irregular; juvenile leaves hairy."	38
34	"Adult leaves strongly discolorous."	"Eucalyptus acmenoides"
34	"Adult leaves not strongly discolorous."	35
35	"Juvenile leaves broad-lanceolate to ovate."	36
35	"Juvenile leaves narrow-lanceolate."	37
36	"Adult leaves green."	"Eucalyptus umbra"
36	"Adult leaves blue."	"Eucalyptus carnea"
37	"Fruit 5–6 mm diam."	"Eucalyptus apothalassica"
37	"Fruit 6–8 mm diam."	"Eucalyptus psammitica"
38	"Buds and fruit distinctly pedicellate, fruit clusters open."	39
38	"Buds and fruit sessile or shortly pedicellate (pedicels obscured if present), fruit clusters crowded."	48
39	"Leaves strongly discolorous."	"Eucalyptus muelleriana"
39	"Leaves concolorous or weakly discolorous."	40
40	"Disc broad, raised."	41
40	"Disc narrow, not raised."	46
41	"Buds acute or rostrate."	42
41	"Buds rounded."	45
42	"Buds rostrate."	43
42	"Buds acute."	44
43	"Buds angular."	"Eucalyptus cannonii"
43	"Buds not angular."	"Eucalyptus macrorhyncha"
44	"Buds angular."	"Eucalyptus subtilior"
44	"Buds not angular."	"Eucalyptus tindaliae"
45	"Buds angular."	"Eucalyptus prominula"
45	"Buds not angular."	"Eucalyptus laevopinea"
46	"Adult leaves with length:breadth ratio of <3:1."	"Eucalyptus caliginosa"
46	"Adult leaves with length:breadth ratio of >3:1."	47
47	"Adult leaves thin, noticeably discolorous."	"Eucalyptus eugenioides"
47	"Adult leaves not thin, concolorous."	"Eucalyptus conjuncta"
48	"Adult leaves with length:breadth ratio of >3:1."	49
48	"Adult leaves with length:breadth ratio of <3:1."	63
49	"Valves small, mostly enclosed."	50
49	"Valves large, prominently exserted."	60
50	"Adult leaves with a bluish sheen."	51
50	"Adult leaves green, without a bluish sheen."	52
51	"Juvenile leaves ovate (length:breadth ratio of 1.5–2:1), petiole >5 mm long."	"Eucalyptus agglomerata"
51	"Juvenile leaves broad-lanceolate to ovate (length:breadth ratio of 2–2.5:1), petiole <5 mm long."	"Eucalyptus subcaerulea"
52	"Buds angular."	"Eucalyptus capitellata"
52	"Buds not angular."	53
53	"Juvenile leaves broad-lanceolate to ovate."	54
53	"Juvenile leaves narrow-lanceolate."	57
54	"Fruit hemispherical."	"Eucalyptus cameronii"
54	"Fruit globose to flattened-globose."	55
55	"Adult leaves slightly discolorous; north from Coffs Harbour."	"Eucalyptus tindaliae"
55	"Adult leaves concolorous; south of the Hunter River."	56
56	"Fruit <7 mm diam."	"Eucalyptus oblonga"
56	"Fruit >7 mm diam."	"Eucalyptus imitans"
57	"Adult leaves mostly <6 cm long."	"Eucalyptus tenella"
57	"Adult leaves mostly >6 cm long."	58
58	"Fruit hemispherical."	"Eucalyptus mckieana"
58	"Fruit globose or flattened-globose."	59
59	"Adult leaves lanceolate."	"Eucalyptus sparsifolia"
59	"Adult leaves linear to narrow-lanceolate."	"Eucalyptus ralla"
60	"Branchlets glaucous, sharply 4-angled or winged; fruit with a medial ridge; usually mallees."	"Eucalyptus boliviana"
60	"Branchlets not glaucous, terete or moderately 4-angled; trees."	61
61	"Intermediate leaves orbiculate."	"Eucalyptus williamsiana"
61	"Intermediate leaves oblong or elliptic."	62
62	"Buds and adult leaves glossy green."	"Eucalyptus youmanii"
62	"Buds and leaves ± dull, ± bluish."	"Eucalyptus subtilior"
63	"Disc flat, valves mostly enclosed."	64
63	"Disc raised, valves distinctly exserted."	69
64	"Buds finely warty."	"Eucalyptus baxteri"
64	"Buds not warty."	65
65	"Buds angular."	66
65	"Buds not angular."	67
66	"Juvenile leaves cordate."	"Eucalyptus camfieldii"
66	"Juvenile leaves ovate."	"Eucalyptus bensonii"
67	"Adult leaves similifacial."	"Eucalyptus ligustrina"
67	"Adult leaves dorsiventral."	68
68	"Disc thick, flat."	"Eucalyptus globoidea"
68	"Disc thin, slightly depressed."	"Eucalyptus yangoura"
69	"Shrubs and mallees; branchlets glaucous."	"Eucalyptus boliviana ms."
69	"Trees; branchlets not glaucous."	"Eucalyptus blaxlandii"
70	"Valves of fruit enclosed."	71
70	"Valves of fruit exserted."	135
71	"Adult leaves strongly discolorous."	72
71	"Adult leaves concolorous or weakly discolorous."	78
72	"Adult leaves closely penniveined."	73
72	"Adult leaves not closely penniveined."	75
73	"Buds and fruit sessile."	"Eucalyptus botryoides"
73	"Buds and fruit pedicellate."	74
74	"Fruit cylindrical to urceoolate, 10–18 mm long, 6–11 mm diam."	"Eucalyptus robusta"
74	"Fruit conical to pyriform, 5–9 mm long, 4–6 mm diam."	"Eucalyptus microcorys"
75	"Stamens irregularly flexed."	"Eucalyptus rummeryi"
75	"Stamens regularly inflexed."	76
76	"Adult leaves with some stomates on the upper surface."	"Eucalyptus rudderi"
76	"Adult leaves with stomates on the lower surface only."	77
77	"Fruit ovoid, 3–5 mm long, 2–4 mm diam."	"Eucalyptus hypostomatica"
77	"Fruit conical to pyriform, 5–9 mm long, 4–6 mm diam."	"Eucalyptus microcorys"
78	"Juvenile leaves opposite for many pairs."	79
78	"Juvenile leaves opposite for only a few pairs."	88
79	"Branchlets square."	80
79	"Branchlets not square."	81
80	"Buds and fruit glaucous."	"Eucalyptus pyrocarpa"
80	"Buds and fruit not glaucous."	"Eucalyptus pilularis"
81	"Adult leaves broad-lanceolate to ovate."	82
81	"Adult leaves mostly lanceolate or narrower."	84
82	"Adult leaves with only 1 longitudinal vein (midvein)."	"Eucalyptus dives"
82	"Adult leaves with 3 longitudinal veins (3-veined)."	83
83	"Juvenile leaves elliptic or orbiculate."	"Eucalyptus stellulata"
83	"Juvenile leaves narrow-elliptic."	"Eucalyptus copulans"
84	"Adult leaves green."	85
84	"Adult leaves blue."	87
85	"Branches wholly smooth; disc depressed."	"Eucalyptus elata"
85	"Bark rough on branches; disc flat."	86
86	"Calyptra scar absent."	"Eucalyptus radiata"
86	"Calyptra scar present."	"Eucalyptus aggregata"
87	"Adult leaves often >1.5 cm wide."	"Eucalyptus croajingolensis"
87	"Adult leaves <1.5 cm wide."	"Eucalyptus robertsonii"
88	"Calyptra scar absent."	89
88	"Calyptra scar present."	114
89	"Stamens regularly inflexed."	90
89	"Stamens irregularly flexed in bud."	97
90	"Anthers adnate, dehiscing through separate slits."	91
90	"Anthers versatile, reniform, dehiscing through confluent slits."	92
91	"Fruit much longer than broad."	"Eucalyptus ochrophloia"
91	"Fruit about as long as broad."	"Eucalyptus melliodora"
92	"Fine peppermint bark."	93
92	"Coarse thick fissured or fibrous bark."	95
93	"Fruit hemispherical."	"Eucalyptus andrewsii"
93	"Fruit not hemispherical."	94
94	"Northern Tablelands species."	"Eucalyptus campanulata"
94	"South Coast and Southern Tablelands species."	"Eucalyptus consideniana"
95	"Disc depressed."	"Eucalyptus stenostoma"
95	"Disc flat."	96
96	"Twigs glaucous, with a peppermint smell."	"Eucalyptus sieberi"
96	"Twigs not glaucous, with an unpleasant smell."	"Eucalyptus olida"
97	"Juvenile leaves green."	98
97	"Juvenile leaves blue."	110
98	"Juvenile leaves hairy; fruit 13–18 mm diam."	"Eucalyptus olsenii"
98	"Juvenile leaves not hairy; fruit 2–10 mm diam."	99
99	"Fruit with 5 or 6 valves."	"Eucalyptus bosistoana"
99	"Fruit with 3 or 4 valves."	100
100	"Adult leaves >1.5 cm wide."	101
100	"Adult leaves <1.5 cm wide."	104
101	"Disc flat."	"Eucalyptus fastigata"
101	"Disc depressed."	102
102	"Anthers versatile, reniform, dehiscing through confluent slits."	"Eucalyptus obliqua"
102	"Anthers adnate, dehiscing through separate slits."	103
103	"Adult leaves >2 cm wide; buds 5–9 mm long."	"Eucalyptus moluccana"
103	"Adult leaves <2 cm wide; buds 4–7 mm long."	"Eucalyptus microcarpa"
104	"Fruit <7 m diam."	105
104	"Fruit >7 mm diam."	108
105	Trees.	106
105	Mallees.	107
106	"Anthers versatile, reniform, dehiscing through confluent slits."	"Eucalyptus paliformis"
106	"Anthers adnate, dehiscing through separate slits."	"Eucalyptus pilligaensis"
107	"Adult leaves <1.0 cm wide."	"Eucalyptus viridis"
107	"Adult leaves >1.0 cm wide."	"Eucalyptus porosa"
108	"Inflorescences 3-flowered."	"Eucalyptus triflora"
108	"Inflorescences 7-flowered."	109
109	"Fruit urceolate."	"Eucalyptus fraxinoides"
109	"Fruit globose."	"Eucalyptus dendromorpha"
110	"Disc flat."	"Eucalyptus oreades"
110	"Disc depressed."	111
111	"Buds rounded; fruit >8 mm diam."	112
111	"Buds acute; fruit <8 mm diam."	113
112	"Anthers versatile, reniform, dehiscing through confluent slits."	"Eucalyptus delegatensis"
112	"Anthers adnate, dehiscing through separate slits."	"Eucalyptus albens"
113	"Anthers versatile, reniform, dehiscing through confluent slits."	"Eucalyptus piperita"
113	"Anthers adnate, dehiscing through separate slits."	"Eucalyptus polybractea"
114	"Stamens regularly inflexed."	115
114	"Stamens irregularly flexed."	125
115	"Adult leaves broad-lanceolate to ovate or elliptic."	116
115	"Adult leaves linear to lanceolate, occasionally broad-lanceolate."	118
116	"Fruit at least 6 mm long and 6 mm diam."	"Eucalyptus magnificata"
116	"Fruit usually <6 mm long and 6 mm diam."	117
117	"Adult leaves without loose white surface wax; coastal species."	"Eucalyptus baueriana"
117	"Adult leaves glaucous with loose white surface wax; tablelands and Western Slopes species."	"Eucalyptus polyanthemos"
118	"Inflorescences 3-flowered."	"Eucalyptus longifolia"
118	"Inflorescences >3-flowered."	119
119	Trees.	120
119	Mallees.	122
120	"Fruit conical."	"Eucalyptus conica"
120	"Fruit hemispherical to ovoid."	121
121	"Outer stamens infertile."	"Eucalyptus rudderi"
121	"All stamens fertile."	"Eucalyptus intertexta"
122	"Pith glands present."	"Eucalyptus costata"
122	"Pith glands absent."	123
123	"Disc broad, slightly depressed."	"Eucalyptus leptophylla"
123	"Disc narrow, steeply depressed."	124
124	"Fruit 4-angled."	"Eucalyptus calycogona"
124	"Fruit smooth."	"Eucalyptus gracilis"
125	"Buds and twigs glaucous."	"Eucalyptus nortonii"
125	"Buds and twigs non-glaucous."	126
126	"Adult leaves narrow-lanceolate to lanceolate."	127
126	"Adult leaves broad-lanceolate to ovate or ± elliptic, rarely lanceolate."	133
127	"Fruit <5 mm diam."	128
127	"Fruit >5 mm diam."	131
128	"Anthers adnate."	129
128	"Anthers versatile."	130
129	"Juvenile leaves broad-lanceolate (coastal forest tree)."	"Eucalyptus largeana"
129	"Juvenile leaves linear (far inland woodland tree)."	"Eucalyptus largiflorens"
130	"Fruit hemispherical; adult leaves dull."	"Eucalyptus acaciiformis"
130	"Fruit conical; adult leaves glossy."	"Eucalyptus aggregata"
131	"Fruit sessile."	"Eucalyptus goniocalyx"
131	"Fruit pedicellate."	132
132	"Juvenile leaves green."	"Eucalyptus retinens"
132	"Juvenile leaves glaucous."	"Eucalyptus volcanica"
133	Mallees.	"Eucalyptus behriana"
133	Trees.	134
134	"Anthers adnate."	"Eucalyptus populnea"
134	"Anthers versatile."	"Eucalyptus ovata"
135	"Adult leaves strongly discolorous."	136
135	"Adult leaves concolorous."	138
136	"Fruit >10 mm diam."	"Eucalyptus scias"
136	"Fruit <10 mm diam."	137
137	"Calyptra about as long as hypanthium."	"Eucalyptus notabilis"
137	"Calyptra much longer than hypanthium."	"Eucalyptus resinifera"
138	"Fruit sessile."	139
138	"Fruit pedicellate."	150
139	"Inflorescences 3-flowered."	140
139	"Inflorescences 7- or more-flowered."	145
140	"Adult leaves opposite."	141
140	"Adult leaves disjunct."	142
141	"Fruit conical."	"Eucalyptus cinerea"
141	"Fruit campanulate."	"Eucalyptus triplex"
142	"Juvenile leaves green."	"Eucalyptus badjensis"
142	"Juvenile leaves grey or blue."	143
143	"Fruit ovoid."	"Eucalyptus chapmaniana"
143	"Fruit campanulate."	144
144	"Branches smooth."	"Eucalyptus kartzoffiana"
144	"Branches with persistent fibrous bark."	"Eucalyptus alligatrix"
145	"Peduncle <3 mm long."	"Eucalyptus banksii"
145	"Peduncle >3 mm long."	146
146	"Fruit >6 mm diam."	147
146	"Fruit <6 mm diam."	149
147	"Adult leaves green."	"Eucalyptus goniocalyx"
147	"Adult leaves blue."	148
148	"Many adult leaves opposite."	"Eucalyptus conspicua"
148	"Adult leaves disjunct."	"Eucalyptus nortonii"
149	"Valves acute."	"Eucalyptus quadrangulata"
149	"Valves obtuse."	"Eucalyptus macarthurii"
150	"Calyptra >1.5 times as long as hypanthium."	151
150	"Calyptra equal in length to hypanthium."	156
151	"Disc raised."	152
151	"Disc not raised."	153
152	"Inflorescences 3-flowered."	"Eucalyptus morrisii"
152	"Inflorescences 7-flowered."	"Eucalyptus exserta"
153	"Disc flat."	"Eucalyptus bakeri"
153	"Disc sharply depressed."	154
154	"Trees; inflorescences often paired."	"Eucalyptus squamosa"
154	"Mallees; inflorescences solitary."	155
155	"Adult leaves opposite, ovate to broad-lanceolate or elliptic."	"Eucalyptus gillii"
155	"Adult leaves disjunct, lanceolate to broad-lanceolate."	"Eucalyptus socialis"
156	"Inflorescences compound."	"Eucalyptus coolabah"
156	"Inflorescences simple."	157
157	"Inflorescences often paired."	158
157	"Inflorescences solitary."	159
158	"Calyptra scar present."	"Eucalyptus squamosa"
158	"Calyptra scar absent."	"Eucalyptus fastigata"
159	"Juvenile leaves linear."	160
159	"Juvenile leaves broad-lanceolate or broader."	163
160	"Disc steeply depressed."	"Eucalyptus oleosa"
160	"Disc level or raised."	161
161	"Bark shedding from bases of larger branches."	"Eucalyptus smithii"
161	"Bark persisting to smaller branches."	162
162	"Adult leaves mostly >1 cm wide."	"Eucalyptus corticosa"
162	"Adult leaves mostly <1 cm wide."	"Eucalyptus nicholii"
163	"Buds glaucous."	164
163	"Buds not glaucous."	165
164	"Fruit 6–8 mm diam."	"Eucalyptus malacoxylon"
164	"Fruit 4–5 mm diam."	"Eucalyptus nova-anglica"
165	"Juvenile leaves green."	166
165	"Juvenile leaves blue."	168
166	"Fruit >5 mm diam."	"Eucalyptus angophoroides"
166	"Fruit <5 mm diam."	167
167	"Fruit conical."	"Eucalyptus aggregata"
167	"Fruit hemispherical or rounded."	"Eucalyptus acaciiformis"
168	"Juvenile leaves narrow-elliptic."	"Eucalyptus ignorabilis"
168	"Juvenile leaves orbiculate."	169
169	"Fruit >5 mm long."	"Eucalyptus bridgesiana"
169	"Fruit <5 mm long."	"Eucalyptus nova-anglica"
170	"Valves of fruit enclosed."	171
170	"Valves of fruit exserted."	228
171	"Inflorescences compound."	172
171	"Inflorescences simple."	174
172	"Fruit hemispherical."	"Eucalyptus michaeliana"
172	"Fruit conical or ovoid."	173
173	"Stamens regularly inflexed, outer whorls infertile."	"Eucalyptus polyanthemos"
173	"Stamens irregularly flexed, all fertile."	"Eucalyptus dawsonii"
174	"Fruit sessile."	175
174	"Fruit pedicellate."	193
175	"Inflorescences 3-flowered."	176
175	"Inflorescences 7-flowered or more."	180
176	"Adult leaves often opposite."	177
176	"Adult leaves disjunct."	179
177	"Opposite pairs of juvenile leaves fused at base."	"Eucalyptus perriniana"
177	"Juvenile leaves free."	178
178	"Adult leaves <10 mm wide."	"Eucalyptus recurva"
178	"Adult leaves >10 mm wide."	"Eucalyptus pulverulenta"
179	"Fruit cylindrical or ovoid, disc flat or depressed; juvenile leaves."	"Eucalyptus glaucescens"
179	"Fruit campanulate, disc slightly raised; juvenile leaves <4 cm long and wide."	"Eucalyptus saxatilis"
180	Trees.	181
180	Mallee.	187
181	"Calyptra scar present."	"Eucalyptus nitens"
181	"Calyptra scar absent."	182
182	"Buds in stellate clusters."	183
182	"Buds not in stellate clusters."	184
183	"Juvenile leaves elliptic or orbiculate."	"Eucalyptus stellulata"
183	"Juvenile leaves narrow-elliptic."	"Eucalyptus copulans"
184	"Adult leaf venation subparallel."	185
184	"Adult leaves with a distinct midrib."	186
185	"Fruit angular."	"Eucalyptus debeuzevillei"
185	"Fruit not angular."	"Eucalyptus niphophila"
186	"Fruit broader than long; juvenile leaves green."	"Eucalyptus kybeanensis"
186	"Fruit longer than broad; juvenile leaves blue."	"Eucalyptus oreades"
187	"Adult leaves often opposite."	"Eucalyptus sturgissiana"
187	"Adult leaves disjunct."	188
188	"Buds in stellate clusters."	189
188	"Buds not in stellate clusters."	192
189	"Juvenile leaves ovate to elliptic."	"Eucalyptus latiuscula"
189	"Juvenile leaves linear to lanceolate"	190
190	"Juvenile leaves lanceolate, adult leaves often >1 cm wide."	"Eucalyptus dissita"
190	"Juvenile leaves linear to narrow-lanceolate, adult leaves <1 cm wide."	191
191	"Adult leaves <6 cm long."	"Eucalyptus moorei"
191	"Adult leaves often >6 cm long."	"Eucalyptus serpentinicola"
192	"Calyptra scar absent."	"Eucalyptus kybeanensis"
192	"Calyptra scar present."	"Eucalyptus dumosa"
193	"Venation in adult leaves subparallel."	194
193	"Venation in adult leaves not subparallel."	197
194	"Mallees; leaves lanceolate or narrower."	"Eucalyptus gregsoniana"
194	"Trees; leaves lanceolate to ovate."	195
195	"Internodes often >3 cm long."	"Eucalyptus lacrimans"
195	"Internodes <3 cm long."	196
196	"Buds strongly glaucous."	"Eucalyptus niphophila"
196	"Buds not strongly glaucous."	"Eucalyptus pauciflora"
197	Mallees.	198
197	Trees.	213
198	"Adult leaves >1.5 cm wide."	199
198	"Adult leaves <1.5 cm wide."	205
199	"Adult leaves with lateral veins strongly acute (<30° to midrib)."	"Eucalyptus multicaulis"
199	"Adult leaves with lateral veins 30–50° to midrib."	200
200	"Disc flat."	"Eucalyptus luehmanniana"
200	"Disc depressed."	201
201	"Buds glaucous."	"Eucalyptus stenostoma"
201	"Buds not glaucous."	202
202	"Twigs winged."	"Eucalyptus langleyi"
202	"Twigs not winged."	203
203	"Juvenile leaves dull, subglaucous; adult leaves to 3.5 cm wide."	"Eucalyptus burgessiana"
203	"Juvenile leaves glossy green; adult leaves to 2.5 cm wide."	204
204	"Fruit 8–11 mm diam."	"Eucalyptus obstans"
204	"Fruit 3–5 mm diam."	"Eucalyptus aenea"
205	"Disc flat."	206
205	"Disc depressed."	208
206	"Disc broad."	"Eucalyptus codonocarpa"
206	"Disc narrow."	207
207	"Leaves thick."	"Eucalyptus approximans"
207	"Leaves thin."	"Eucalyptus microcodon"
208	"Adult leaves <8 mm wide."	209
208	"Adult leaves often >8 mm wide."	211
209	"Immature adult leaves pinkish grey; longest peduncles <8 mm long."	"Eucalyptus cunninghamii"
209	"Immature adult leaves green; longest peduncles >8 mm long."	210
210	"Largest fruit >8 mm diam.; leaves usually <9 cm long, if longer then >7 mm wide."	"Eucalyptus laophila"
210	"Largest fruit <8 mm diam.; longest leaves >9 cm long and <7 mm wide."	"Eucalyptus apiculata"
211	"Fruit 3–5 mm diam."	"Eucalyptus aenea"
211	"Fruit 6–11 mm diam."	212
212	"Adult leaves <10 mm wide."	"Eucalyptus stricta"
212	"Adult leaves >10 mm wide."	"Eucalyptus spectatrix"
213	"Calyptra scar absent."	214
213	"Calyptra scar present."	223
214	"Disc flat."	215
214	"Disc not flat."	220
215	"Adult leaves dull."	216
215	"Adult leaves glossy."	218
216	"Tablelands and Western Slopes species."	"Eucalyptus rossii"
216	"Coastal species."	217
217	"Adult leaves <1.8 cm wide."	"Eucalyptus racemosa"
217	"Adult leaves >1.9 cm wide."	"Eucalyptus signata"
218	"Fruit >7 mm diam."	"Eucalyptus haemastoma"
218	"Fruit <7 mm diam."	219
219	"Coastal species north from Morisset."	"Eucalyptus signata"
219	"Sydney region, Blue Mtns and south."	"Eucalyptus sclerophylla"
220	"Fruit large (13–18 mm diam.), ribbed."	"Eucalyptus olsenii"
220	"Fruit small (4–10 mm diam.), not ribbed."	221
221	"Anthers versatile, reniform, dehiscing through confluent slits."	"Eucalyptus paliformis"
221	"Anthers adnate, dehiscing through separate slits."	222
222	"Inflorescences 3-flowered."	"Eucalyptus leucoxylon"
222	"Inflorescences 7-flowered."	"Eucalyptus melliodora"
223	"Juvenile leaves opposite for few pairs."	"Eucalyptus ovata"
223	"Juvenile leaves opposite for many pairs."	224
224	"Buds rounded, outer calyptra not shedding cleanly."	"Eucalyptus benthamii"
224	"Buds pointed, outer calyptra shedding cleanly."	225
225	"Inflorescences 3-flowered."	"Eucalyptus wilcoxii"
225	"Inflorescences 7-flowered."	226
226	"Fruit <5 mm diam."	"Eucalyptus dorrigoensis"
226	"Fruit >5 mm diam."	227
227	"Buds 4–5 mm diam."	"Eucalyptus cypellocarpa"
227	"Buds 2.5–3.5 mm diam."	"Eucalyptus oresbia"
228	"Calyptra >1.5 times as long as hypanthium."	229
228	"Calyptra <1.5 times as long as hypanthium."	244
229	"Buds glaucous."	230
229	"Buds not glaucous."	232
230	"Disc domed, >1.5 mm wide."	"Eucalyptus glaucina"
230	"Disc ± flat, <1.5 mm wide."	231
231	"Calyptra cylindrical."	"Eucalyptus prava"
231	"Calyptra conical."	"Eucalyptus dealbata"
232	"Calyptra cylindrical."	"Eucalyptus bancroftii"
232	"Calyptra conical or rostrate."	233
233	"Calyptra rostrate."	"Eucalyptus camaldulensis"
233	"Calyptra conical."	234
234	"Calyptra >2.5 times as long as hypanthium."	235
234	"Calyptra 1.5–2 times as long as hypanthium."	239
235	"Inflorescences >7-flowered."	"Eucalyptus amplifolia"
235	"Inflorescences 7-flowered."	236
236	"Seeds black."	237
236	"Seeds red."	238
237	"Fruit >6 mm in diam."	"Eucalyptus tereticornis"
237	"Fruit <6 mm in diam."	"Eucalyptus blakelyi"
238	"Fruit >5 mm long, adult leaves lanceolate."	"Eucalyptus interstans"
238	"Fruit <5 mm long, adult leaves narrow-lanceolate."	"Eucalyptus seeana"
239	"Juvenile leaves ovate to orbiculate."	240
239	"Juvenile leaves narrow-lanceolate to lanceolate."	242
240	Trees.	"Eucalyptus chloroclada"
240	Mallees.	241
241	"Adult leaves penniveined, glossy; coastal species."	"Eucalyptus pumila"
241	"Adult leaves with open venation, dull; inland plains species."	"Eucalyptus vicina"
242	"Trees; seeds red."	"Eucalyptus parramattensis"
242	"Mallees; seeds black."	243
243	"Fruit >5 mm diam."	"Eucalyptus dwyeri"
243	"Fruit <5 mm diam."	"Eucalyptus nandewarica"
244	"Inflorescences 3-flowered."	245
244	"Inflorescences 7- or more-flowered."	253
245	"Fruit >10 mm diam."	246
245	"Fruit <10 mm diam."	247
246	"Peduncles >3 mm long."	"Eucalyptus pseudoglobulus"
246	"Peduncles <3 mm long."	"Eucalyptus bicostata"
247	"Juvenile leaves broad lanceolate to ovate, to orbiculate or elliptic."	248
247	"Juvenile leaves lanceolate."	252
248	"Buds glaucous."	249
248	"Buds not glaucous."	250
249	"Juvenile stems rounded."	"Eucalyptus rubida"
249	"Juvenile stems markedly quadrangular."	"Eucalyptus canobolensis"
250	"Juvenile leaves grey."	"Eucalyptus dalrympleana"
250	"Juvenile leaves green."	251
251	"Calyptra as wide as hypanthium."	"Eucalyptus imlayensis"
251	"Calyptra narrower than hypanthium."	"Eucalyptus baeuerlenii"
252	"Calyptra narrower than hypanthium."	"Eucalyptus wilcoxii"
252	"Calyptra as wide as hypanthium."	"Eucalyptus viminalis"
253	"Adult leaves discolorous."	254
253	"Adult leaves concolorous."	262
254	"Disc raised or ± level."	255
254	"Disc depressed."	259
255	"Fruit >10 mm diam."	"Eucalyptus canaliculata"
255	"Fruit <10 mm diam."	256
256	"Valves apiculate, vertically raised."	"Eucalyptus major"
256	"Valves obtuse, incurved."	257
257	"Fruit <6 mm diam."	"Eucalyptus propinqua"
257	"Fruit 6–10 mm diam."	258
258	"Calyptra narrower than hypanthium."	"Eucalyptus biturbinata"
258	"Calyptra as wide as hypanthium."	"Eucalyptus punctata"
259	"Buds glaucous, valves broad-triangular, incurved."	"Eucalyptus grandis"
259	"Buds not glaucous."	260
260	"Adult leaves lanceolate; valves narrow-acuminate."	"Eucalyptus saligna"
260	"Adult leaves broad-lanceolate or broader; valves triangular, acute."	261
261	"Calyptra rounded, pedicels <4 mm long."	"Eucalyptus brunnea"
261	"Calyptra pointed, pedicels >4 mm long."	"Eucalyptus deanei"
262	"Adult leaves often opposite, <3 cm long."	"Eucalyptus parvula"
262	"Adult leaves disjunct, >3 cm long."	263
263	"Inflorescences usually paired in leaf axils."	"Eucalyptus pachycalyx"
263	"Inflorescences solitary in leaf axils."	264
264	"Adult leaves broad-lanceolate or broader."	265
264	"Adult leaves lanceolate or narrower."	267
265	"Adult leaves acute."	"Eucalyptus ovata"
265	"Adult leaves rounded or mucronate."	266
266	"Petioles 6–11 mm long; adult leaves 1.2–3.5 cm wide; peduncles 3–9 mm long."	"Eucalyptus aquatica"
266	"Petioles 10–20 mm long; adult leaves 3.0–5.0 mm wide; peduncles 10–18 mm long."	"Eucalyptus camphora"
267	"Bark shed in long ribbons."	268
267	"Bark shed in scales."	275
268	"Juvenile leaves ovate or broader."	269
268	"Juvenile leaves lanceolate."	272
269	"Buds glaucous."	270
269	"Buds not glaucous."	271
270	"Calyptra finely warty, apiculate."	"Eucalyptus maidenii"
270	"Calyptra smooth, not apiculate."	"Eucalyptus rubida"
271	"Adult leaves apparently finely toothed; outer calyptra not shedding cleanly."	"Eucalyptus denticulata"
271	"Adult leaves entire; outer calyptra shedding cleanly."	"Eucalyptus dalrympleana"
272	"Calyptra scar present."	273
272	"Calyptra scar absent."	274
273	"Buds 4–7 mm long; pedicels 1–4 mm long."	"Eucalyptus nobilis"
273	"Buds 9–13 mm long; pedicels <2 mm long."	"Eucalyptus quinniorum"
274	"Calyptra hemispherical."	"Eucalyptus kybeanensis"
274	"Calyptra conical, acute."	"Eucalyptus deuaensis"
275	"Juvenile leaves linear or lanceolate."	276
275	"Juvenile leaves broad lanceolate to ovate, elliptic or orbiculate."	279
276	Trees.	277
276	Mallees.	278
277	"Bark irregularly shedding, patchy, not powdery."	"Eucalyptus parramattensis"
277	"Bark clean or lightly mottled, powdery."	"Eucalyptus mannifera"
278	"Fruit >5 mm diam."	"Eucalyptus dwyeri"
278	"Fruit <5 mm diam."	"Eucalyptus nandewarica"
279	Mallees.	280
279	Trees.	281
280	"Adult leaves penniveined, glossy; coastal species."	"Eucalyptus pumila"
280	"Adult leaves with open venation, dull; inland plains species."	"Eucalyptus vicina"
281	"Juvenile leaves disjunct."	"Eucalyptus chloroclada"
281	"Juvenile leaves opposite for >10 nodes."	282
282	"Juvenile leaves crenate, remaining opposite for several years."	"Eucalyptus dunnii"
282	"Juvenile leaves not crenate."	283
283	"Fruit <5 mm long and <5 mm in diam."	284
283	"Fruit 5 mm long and 5 mm in diam. or more."	285
284	"Buds acute; outer calyptra shedding cleanly."	"Eucalyptus dorrigoensis"
284	"Buds rounded; outer calyptra not shedding cleanly."	"Eucalyptus benthamii"
285	"Fruit 5–6 mm long."	"Eucalyptus praecox"
285	"Fruit 6–8 mm long"	"Eucalyptus elliptica"