1	"Corolla various shades of red, pink, orange, pale yellow, cream or green; internal corolla tube usually with a well-defined whorl of hairs close to the base (absent only in S. discolor and S. foliosa); corolla lobes bi-textured, the distal portion of the corolla lobes abruptly smoother and paler than the basal portion; filaments flattened (linear in section) or occasionally compressed (narrowly elliptic in section)"	"Styphelia Group I"
1	"Corolla mostly white, occasionally red, pink or cream; corolla tube usually without a well-defined whorl of hairs close to base (present only in S. stomarrhena); corolla lobes not bi-textured; filaments mostly ± terete, very occasionally plano-convex"	2
2	"Anthers conspicuously exserted from the corolla tube; corolla lobes usually spreading from base, revolute and often coiled abaxially (erect for up to 1/4 of their length and then spreading and becoming recurved to revolute in S. stomarrhena and S. rectiloba)"	3
2	"Anthers included, partially exserted or if fully exserted from the corolla tube, then not exserted beyond the erect bases of the corolla lobes and therefore not appearing to be exserted; curvature of corolla lobes various, rarely spreading from the base, but if so then never revolute or coiled abaxially"	9
3	"Anthers connate or cohering, around the style"	4
3	"Anthers completely free from style"	5
4	"Corolla pale pink or white; filaments glabrous; drupe ovoid, tapering markedly towards the apex; internal corolla tube glabrous towards the base"	"Styphelia Group IIIb"
4	"Corolla dark pink or red; filaments densely hairy; drupe depressed-obovoid, apex obtuse; internal corolla tube with five basal hair tufts"	"Styphelia stomarrhena"
5	"Leaf apex obtuse; corolla red; internal corolla tube glabrous in the upper portion below the lobes, but with a discrete band of hairs in the basal 1/3–1/2"	"Styphelia hainesii"
5	"Leaf apex long-mucronate, pungent; corolla white or cream; internal corolla tube hairy for some distance below the lobes and usually becoming glabrous towards the base, or occasionally hairy throughout"	6
6	"Leaf margins revolute, the abaxial surface deeply grooved and hairy, at least between the grooves"	"Styphelia Group IIIa"
6	"Leaves mostly flat or adaxially concave or if occasionally adaxially convex, the margins not revolute and the abaxial surface glabrous"	7
7	"Anthers becoming shortly exserted from the tube and held at right angles to the floral axis post-anthesis; corolla lobes spreading and recurved when live but drying ± straight and reflexed; ovary 3-locular, hairy, with hairs extending onto the lower style"	"Styphelia rectiloba"
7	"Anthers long-exserted from tube; corolla spreading from base, revolute and coiled abaxially; ovary 5-locular glabrous"	8
8	"Corolla cream; nectary annular, much shorter than the ovary; drupe ovoid or ovoid-ellipsoid"	"Styphelia Group II"
8	"Corolla white; nectary partite, ± equal to, or longer than, the ovary; drupe very narrowly ellipsoid to ± cylindrical, often curved"	"Styphelia exserta"
9	"Inflorescence and flowers pendulous or widely spreading"	10
9	"Inflorescence and flowers strictly erect"	12
10	"Nectary partite; ovary usually hairy, occasionally glabrous; drupe ± dry, without an obvious mesocarp"	"Styphelia Group VIII"
10	"Nectary annular, either truncate or variously lobed; ovary always glabrous; drupe usually with a fleshy mesocarp"	11
11	"Sepals and bracteoles prominently striate when dry; sepals 5.6–6.5 mm long; ovary pale green in dried specimens"	"Styphelia cernua"
11	"Sepals and bracteoles ± smooth, not or scarcely striate when dry; sepals mostly < 5 mm long; ovary dark green to almost black in dried specimens"	"Styphelia Group V"
12	"Inflorescence axis apparently terminating in a flower, no bud-rudiment present; style hairy, markedly narrowing towards the base and readily detached from ovary apex; ovary densely hairy with the surface obscured throughout, the longest ovary hairs 2–3 mm long; anther tips sterile"	"Styphelia kingiana"
12	"Character combination never as above"	13
13	"Sepals and bracteoles distinctly striate when dry; sepals 4.2–9.2 mm long"	"Styphelia Group IX"
13	"Sepals not, or barely striate when dry, bracteoles not, or rarely striate; sepals < 4.2 mm long"	14
14	"Sepal margins distinctly undulate; drupe with a truncate apex; outer surface of corolla lobes papillose"	"Styphelia Group X"
14	"Sepal margins not undulate; drupe apex never truncate; outer surface of corolla lobes glabrous or distinctly hairy"	15
15	"Leaf margins revolute, abaxial leaf surface deeply grooved and shortly hairy within the grooves"	"Styphelia subulata"
15	"Leaf curvature various, but if the margins revolute then the abaxial surface never deeply grooved"	16
16	"Ovary uniformly dark green to almost black in dried specimens; leaves usually adaxially convex, often with recurved to revolute margins, very occasionally (S. leptantha, S. obtecta) adaxially concave"	"Styphelia Group V"
16	"Ovary pale to mid green in dried specimens or sometimes straw-coloured to pale brown; leaves usually adaxially concave, sometimes ± flat, rarely adaxially convex"	17
17	"Drupe strongly compressed (± linear to narrowly elliptic in section), with prominent venation; ovary 2-locular; single-flowered inflorescences without bracts below the bracteoles"	"Styphelia Group XI"
17	"Drupe circular in section; ovary usually 3- or 5-locular, rarely 2-locular, circular in section; bracts always present below the bracteoles"	18
18	"Ovary and drupe narrowly conical, narrowly fusiform, or ± cylindrical, the style not or barely differentiated from the ovary, or if relatively well-differentiated, then 0.4 mm long or less; ovary 3-locular, the individual locules minute and very obscure (only discernible under high magnification from a basal section of the ovary); nectary partite; filaments very short to c. 0.2 mm long"	"Styphelia Group X"
18	"Ovary variously shaped, rarely as above, the style always well-differentiated from the ovary, mostly > 0.4 mm long; ovary mostly 5-locular, occasionally 2-locular (3-locular in L. sp. outer wheatbelt), the locules readily discernible; nectary annular or partite; filaments usually > 0.2 mm long"	19
19	"Point of filament attachment to anthers at least 3/4 above anther base"	"Styphelia Group X"
19	"Point of filament attachment to anthers 1/2 – 2/3 above anther base"	20
20	"Leaves prominently ciliate with stiff, marginal hairs; nectary partite; ovary 2-locular"	"Styphelia hispida"
20	"Leaves without prominent, marginal cilia; nectary annular; ovary 5-locular"	21
21	"Leaves linear, longitudinally twisted; corolla lobes erect for 1/2 − 2/3 of their length and then spreading and recurved, sparsely hairy, with hairs concentrated towards the margins"	"Styphelia quartzitica"
21	"Leaves ovate or obovate, never twisted; corolla lobes spreading from the base and recurved, densely and uniformly hairy"	"Styphelia Group IV"