1	"Leaves sessile or on a very short petiole"	2
1	"Leaves with an obvious petiole"	18
2	"Leaves with flat margins"	"Olearia phlogopappa"
2	"Leaves with margins strongly or weakly rolled under"	3
3	"Plant with at least the upper surface of leaves resinous and sticky"	4
3	"Plant without the upper surface of leaves resinous and sticky"	5
4	"Plant cypress-like, copiously resinous; leaves linear, more or less appressed to stems"	"Olearia teretifolia"
4	"Plant not cypress-like, not copiously resinous; leaves obovate, spreading"	"Olearia iodochroa"
5	"Capitula in leaf axils"	6
5	"Capitula terminal (sometimes terminating small side branches)"	10
6	"Upper surface of leaves smooth, glabrous or sparsely to moderately hairy, not woolly"	7
6	"Upper surface of leaves woolly or minutely warty"	9
7	"Leaves 1–3 mm long; capitula sessile"	"Olearia algida"
7	"Leaves 10–65 mm long, capitula on stalks"	8
8	"Leaves with upper surface glabrous or sparsely hairy; capitula on stalks shorter than subtending leaves"	"Olearia ledifolia"
8	"Leaves with upper surface moderately hairy; capitula on stalks longer than subtending leaves"	"Olearia picridifolia"
9	"Leaves woolly on upper surface; capitula on stalks to 3 mm long"	"Olearia axillaris"
9	"Leaves minutely warty on upper surface; capitula on stalks to 14 mm long"	"Olearia ramulosa"
10	"Leaves warty on upper surface"	11
10	"Leaves not warty on upper surface"	12
11	"Leaves spoon-shaped with a petiole-like base"	"Olearia microphylla"
11	"Leaves not as above"	"Olearia ramulosa"
12	"Leaves with stellate hairs"	"Olearia asterotricha"
12	"Leaves without stellate hairs"	13
13	"Capitula sessile or on very short stalks"	14
13	"Capitula on distinct stalks"	15
14	"Leaves not appressed to branches; disk florets usually 4–8"	"Olearia floribunda"
14	"Leaves more or less appressed to branches; disk florets 2–4"	"Olearia microdiska"
15	"Leaves with upper surface moderately hairy, dull green"	"Olearia picridifolia"
15	"Leaves with upper surface glabrous or sparsely hairy, glossy green"	16
16	"Leaves 3.5–8 cm long, margins toothed, mostly in upper half"	"Olearia semidentata"
16	"Leaves to 2.5 cm long, margins entire or irregularly toothed"	17
17	"Ray florets white; leaf margins without cilia"	"Olearia pimeleoides"
17	"Ray florets usually mauve to purple, rarely white; leaf margins ciliate"	"Olearia ciliata"
18	"Leaves mostly opposite"	"Olearia megalophylla"
18	"Leaves mostly alternate"	19
19	"Capitula diskoid"	"Olearia paniculata"
19	"Capitula radiate"	20
20	"Pappus of pink bristles"	"Olearia myrsinoides"
20	"Pappus of white or pale brownish bristles"	21
21	"Capitula solitary or a few together in clusters"	"Olearia phlogopappa"
21	"Capitula in corymbs or panicles"	22
22	"Capitula in panicles"	23
22	"Capitula in corymbs"	25
23	"Margins of leaves with prickly teeth; achenes glabrous"	"Olearia erubescens"
23	"Margins of leaves entire or obscurely toothed, never prickly; achenes hairy"	24
24	"Leaves mostly more than 5 cm long, lower surface stellate-hairy"	"Olearia lirata"
24	"Leaves mostly less than 5 cm long, lower surface not stellate-hairy"	"Olearia persoonioides"
25	"Leaf margins regularly and prominently toothed or lobed"	26
25	"Leaf margins entire or obscurely and irregularly toothed"	27
26	"Capitula 25–60 mm across; ray florets blue or white; leaf margins not undulate"	"Olearia tomentosa"
26	"Capitula to 10 mm across; ray florets white; leaf margins undulate"	"Olearia macrodonta"
27	"Leaves silver-hairy on lower surface"	"Olearia argophylla"
27	"Leaves beige-hairy on lower surface"	"Olearia megalophylla"