1	"All flowers terminal on leafy stems, and preceded by a series of small leaves lacking a sheathing base and grading in shape towards the sepals (bracteoles)."	2
1	"Flowers axillary, subtended by a bract and a pair of keeled bracteoles, the apex of the inflorescence senescent or with a terminal flower."	13
2	"Leaves longitudinally twisted."	3
2	"Leaves not twisted."	8
3	"Corolla lobes much longer than the tube."	4
3	"Corolla lobes shorter than or equal to the tube."	6
4	"Filaments with distinct rounded or squarish lobes below the middle."	"Andersonia auriculata"
4	"Filaments without lobes."	5
5	"Leaves immediately preceding the flowers erect. Sepals glabrous, corolla narrowly urceolate, bright blue, staminal filaments linear-oblong."	"Andersonia pinaster"
5	"Leaves immediately preceding the flowers with widely spreading to revolute tips. Sepals hairy on both surfaces; corolla cylindrical, white; filaments widened about the middle."	"Andersonia depressa"
6	"Sepals oblong to narrowly ovate, pale pink; corolla blue to purplish pink, often grading between colours on a single flower; staminal filaments widely convex in fresh flowers."	"Andersonia caerulea"
6	"Sepals linear to subulate, greenish white; corolla blue; staminal filaments not widely convex in fresh flowers."	7
7	"Calyx 12 to 16 mm, corolla cylindrical, filaments straight."	"Andersonia hammersleyana"
7	"Calyx 8 to 11 mm, corolla strongly urceolate, filaments curved."	"Andersonia lazuline"
8	"Filaments hairy on the surfaces or on the margins."	9
8	"Filaments completely glabrous."	10
9	"Filaments with hairs on adaxial surface, calyx pink-mauve, corolla blue suffusing to pink or mauve in the lower half, corolla hairs white."	"Andersonia caerulea"
9	"Filaments with hairs on the margin, usually only just below the anther and surfaces glabrous; calyx and corolla both mauve, corolla hairs mauve."	"Andersonia macranthera"
10	"Calyx longer than the corolla, the sepals linear-oblong and hairy on both surfaces, the corolla lobes densely hairy adaxially."	11
10	"Calyx shorter than or equal to the corolla, sepals narrowly ovate to ovate, glabrous or rarely with a very few hairs; corolla sparsely hairy adaxially."	12
11	"Corolla urceolate, often hairy on abaxial surface, the lobes longer than the tube and with a distinct tuft of longer hairs near the middle; tips glabrous; stamens shorter than style, anthers linear and equal in length to the filaments, filaments obspatulate."	"Andersonia heterophylla"
11	"Corolla cylindrical, the lobes shorter than the tube and hairy over their entire length without a distinct tuft, stamens longer than the style, anthers oblong and much shorter than the filaments, filaments linear becoming filiform."	"Andersonia audax"
12	"Leaves appressed onto the stem, usually hairy on both adaxial and abaxial surfaces. Corolla and calyx mauve, corolla lobes imbricate at the base; style linear-oblong, not thickened in the middle."	"Andersonia brevifolia"
12	"Leaves erect to spreading. Calyx and corolla white; corolla lobes not imbricate; style thickened in the middle and tapered at the base and apex."	"Andersonia micrantha"
13	"Leaves prominently twisted, often recurved, the margins undulate."	14
13	"Leaves not prominently twisted."	31
14	"Corolla longer than the calyx after anthesis."	15
14	"Corolla shorter than or equal to the calyx after anthesis."	17
15	"Sepals 8 to 9 mm, sparsely hairy on the abaxial surface; narrowly ovate, outer and inner sepals the same shape; Corolla 8 to 9 mm."	"Andersonia ferricola"
15	"Sepals 2.5 to 5 mm, glabrous abaxially; ovate to broadly ovate with the outer two usually different in size or shape from the inner three. Corolla 4 to 6 mm."	16
16	"Stamens and style elongating at anthesis and becoming well exserted from the corolla, the anthers versatile on widely spreading filaments. Calyx and corolla both pale pink. Sepals completely glabrous, the outer two shorter than the inner three. Corolla tube glabrous. Shoot apex senescent."	"Andersonia echidna"
16	"Stamens and style not elongating at anthesis, anthers manifest or just included, stigma manifest; filaments appressed to the ovary near the base, spreading with the anthers incurved above. Calyx pink to mauve, corolla blue. Sepals usually with ciliate margins and minutely papillate on the adaxial surface. Outer two sepals markedly concave and wider than the inner three. Shoot apex with a terminal flower."	"Andersonia jamesii"
17	"Calyx, corolla and floral prophylls scarlet."	"Andersonia grandiflora"
17	"Calyx and corolla creamy white, pale mauve or pink. Floral prophylls green, rarely cream or with a pinkish tinge but never scarlet."	18
18	"Corolla lobes much longer than the tube."	19
18	"Corolla lobes equal to or shorter than the tube."	23
19	"Flowers aggregated into dense, spiny heads. Bracts, bracteoles, calyx and corolla creamy white, the corolla lobes widely spreading when open exposing bright red anthers. Corolla tube closed by a thickened pad."	"Andersonia echinocephala"
19	"Flowers aggregated into fascicles. Bracts and bracteoles green, calyx and corolla creamy white to pinkish. Corolla lobes erect or erect to spreading after anthesis, anthers not exposed by spreading lobes. Corolla tube not closed by a thickened pad."	20
20	"Anthers equal to or longer than the filaments, anthers and filaments tapered at the apex and base."	"Andersonia fallax"
20	"Anthers shorter than the filaments, oblong."	21
21	"Corolla lobes erect with longitudinally revolute margins and hairs in a dense patch below the middle. Staminal filaments articulated below the middle with a tuft of hairs on the adaxial side of the articulation; otherwise glabrous."	"Andersonia geniculate"
21	"Corolla lobes erect at the base, with spreading tips, densely hairy over most of their length. Filaments not articulated, hairy over the whole adaxial surface."	22
22	"Staminal filaments linear, abaxial surface glabrous, canaliculate in cross section."	"Andersonia longifolia"
22	"Staminal filaments broadened near the middle, with hairs on both abaxial and adaxial surfaces, flattened."	"Andersonia redolens"
23	"Corolla urceolate, lobes erect at the base with spreading or strongly recurved tips; adaxial hairs thick and forming a tuft at the lobe arch."	24
23	"Corolla cylindrical, rarely slightly widened at the middle but not urceolate; corolla lobes erect to spreading, or rolled; lobe hairs sparse and not forming a tuft."	25
24	"Leaves glaucous. Calyx and corolla creamy white, sepals tinged with green. Filaments oblong, hairy over the entire adaxial surface and abaxially on the upper half."	"Andersonia opalescens"
24	"Leaves not glaucous. Calyx white-pale pink; corolla blue, lobes often recurved. Filaments obspatulate, hairy on the broadened section on the adaxial side, just a few hairs behind the anthers on the abaxial side."	"Andersonia lehmanniana"
25	"Flowers collected in dense, globular clusters usually containing many (>15 up to 40) flowers."	26
25	"Flowers collected in fascicles or loose clusters of up to 10 or 12 flowers."	28
26	"Sepals 10 to 13 mm, corolla 10 to 13 mm leaves; corolla lobes spreading after anthesis; filaments cylindrical."	"Andersonia latiflora"
26	"Sepals 2 to 9 mm, corolla 2 to 8 mm; corolla lobes rolled after anthesis; filaments flattened."	27
27	"Sepals narrowly ovate with truncate base; corolla tube glabrous; filaments hairy on the adaxial side but glabrous abaxially."	"Andersonia involucrate"
27	"Sepals strongly tapered at the base; corolla tube hairy; filaments hairy on both surfaces."	"Andersonia mysosma"
28	"Sepals linear, calyx white at anthesis. Style elongating at anthesis."	29
28	"Sepals oblong to ovate; pink to mauve at anthesis. Style not elongating at Anthesis."	30
29	"Leaves subulate, glaucous, abaxially papillate or with short thick hairs. Sepals sparsely hairy on the abaxial side; corolla white at anthesis, the lobes spreading; stigma exserted. Filaments linear, not tapered at the Apex."	"Andersonia saxatilis"
29	"Leaves with long fine hairs on the abaxial surface and especially margins. Sepals glabrous on both surfaces; corolla very pale pink atanthesis, lobes rolled inwards after anthesis; stigma not exserted but exposed by rolled lobes. Filaments oblong, tapered at the apex."	"Andersonia blepharifolia"
30	"Leaves strongly twisted and forming a distinctive corkscrew around the stem; densely hairy all over. Sepals with hairs on both surfaces. Corolla abaxially hairy, especially on the lobes. Anthers elliptical.Filaments narrowly obovate to oblong, broadest just below the anther, adaxially hairy, abaxially hairy to papillate."	"Andersonia pubescens"
30	"Leaves twisted but spreading and not forming a corkscrew; hairs sparse, abaxial surface usually glabrous. Filaments linear-oblong, abaxially glabrous or papillate, sheath glabrous; sepals glabrous; corolla never hairy abaxially. Anthers oblong. Filaments oblong to linear, or widened near the base, adaxially hairy near the middle, abaxially glabrous."	"Andersonia sprengelioides"
31	"Flowers not conspicuous, hidden by erect bracts (pherophylls). Corolla lobes much longer than the tube; corolla tube closed around the ovary by a thickened pad of tissue, the hairs confined to this region; large, few branched but robust shrubs; > 1.2 m high."	"Andersonia axilliflora"
31	"Flowers conspicuous, bracts (pherophylls) usually shorter than the flower. Corolla lobes equal to or less than the tube; corolla not closed by a thickened pad of tissue. Many branched shrubs of up to 1 m."	32
32	"Style elongating at anthesis, the stigma well exserted."	33
32	"Style not elongating at anthesis, the stigma included or exposed by spreading corolla lobes."	37
33	"Style but not stamens elongating at anthesis, with stigma exserted well beyond the corolla but the anthers included; Calyx creamy white, corolla yellowish cream to pale yellow."	"Andersonia nymphaea"
33	"Stamens and style both elongating at anthesis; anthers and stigma both exserted, highly conspicuous."	34
34	"Calyx 7.5 to 12 mm. Corolla 10 to 13 mm, narrowly cylindrical with the lobes widely spreading, densely hairy to the tips. Sepals salmon or pale pink in the bud, becoming white with maturity, the margins becoming inrolled with age."	"Andersonia aristate"
34	"Calyx 3 to 6 mm. Corolla 2 to 6 mm, the lobes either erect or revolute and with glabrous tips. Sepals cream or red, margins remaining flat."	35
35	"Anthers bright yellow, deeply bifid at the apex. Corolla creamy yellow, with revolute lobes."	"Andersonia bifida"
35	"Anthers crimson to scarlet, not deeply bifid. Corolla red or cream, the lobes erect or slightly spreading."	36
36	"Calyx and corolla bright red. Sepals adaxially glabrous. Stamens and style red, stamens 14 to 19 mm after anthesis, ca. 2-4 times the length of the corolla, gynoecium same length."	"Andersonia setifolia"
36	"Calyx and corolla creamy white. Sepals adaxially pubescent. Staminal filaments and style white, anthers bright red, stamens 6.5 to 8.1 mm after anthesis, about 1.5 times the corolla length, gynoecium 8.5 to 11.5 mm after anthesis."	"Andersonia virolens"
37	"Anthers included."	38
37	"Anthers manifest."	39
38	"Sepals ovate, 3 to 4 mm, pink - purple, margins ciliate. Corolla campanulate, 4 to 4.5 mm, pink-purple, rarely white, with hairs forming a band at the top of the tube, lobes glabrous. Stamens not elongating at anthesis, the anthers positioned at or below the band of corolla hairs. Shoot apex with a terminal flower."	"Andersonia simplex"
38	"Sepals linear, 10 to 12 mm, white. Corolla cylindrical with widely spreading lobes, white, hairs on the tube and lobes, the lobes with sparse hairs almost to the tip. Stamens elongating at anthesis but the anthers remaining included."	"Andersonia annelsii"
39	"Corolla with adaxial hairs on the lobes only, tube glabrous. Sepals 2 or less than 4 mm, glabrous."	40
39	"Corolla with adaxial hairs on tube and lobes, sepals > 4 mm, with adaxial Hairs."	41
40	"Corolla + campanulate. Filaments ovate to obspatulate, tapering towards the base. Ovary locules with rounded or slightly flattened apices."	"Andersonia amabile"
40	"Corolla cylindrical. Filaments linear to narrowly obovate. Ovary locules with distinctly cusped or crowned apices."	"Andersonia stephanocarpa"
41	"Sepals very shortly (0.5-1 mm) connate at the base, this region and the sepal base slightly fleshy, hairy."	"Andersonia parvifolia"
41	"Sepal bases completely free."	42
42	"Sepals 4 to 6 mm, with hairs on both surfaces. Shoot apex terminating in a flower."	"Andersonia carinata"
42	"Sepals 7 to 10 mm, glabrous adaxially. Shoot apex leafy, senescent."	"Andersonia gracilis"