1	"Anthers unequal, one very much longer than the other"	2
1	"Anthers ±the same size"	14
2	"Leaves imparipinnately 3–17-foliolate"	3
2	"Leaves unifoliolate or digitately 3–9-foliolate"	5
3	"Lower surface of leaflets glabrous or with scattered, appressed hairs, especially on the midrib"	"Labichea cassioides"
3	"Lower surface of leaflets densely clothed with appressed or spreading hairs"	4
4	"Leaf rachis 0.5–1.5 cm long; terminal leaflet of each leaf disproportionately larger than the others; leaflets narrowed apically to a distinct pungent point"	"Labichea brassii"
4	"Leaf rachis mostly 1.5–9 cm long; terminal leaflet of each leaf larger than the others but not disproportionately so; leaflets rounded or obtuse apically and emarginate or slightly apiculate"	"Labichea buettneriana"
5	"Leaves unifoliolate or consistently 3-foliolate"	6
5	"Leaves digitately 5–9-foliolate, occasional 3-foliolate leaves accompanied by leaves with 5–9 leaflets"	9
6	"Leaves unifoliolate"	"Labichea lanceolata"
6	"Leaves 3-foliolate"	7
7	"Central leaflet of each leaf to 2.5 cm long, longer than the lateral leaflets but not disproportionately so"	"Labichea deserticola"
7	"Central leaflet of each leaf usually more than 3 cm long and disproportionately longer than the lateral leaflets"	8
8	"Lateral leaflets elliptic or elliptic-oblong; leaves sessile or almost so"	"Labichea lanceolata"
8	"Lateral leaflets usually ±very broadly obtrullate or reniform, rarely narrowly elliptic; leaves distinctly petiolate"	"Labichea obtrullata"
9	"Sepals usually 4"	10
9	"Sepals usually 5"	11
10	"Upper leaflet surface usually glabrous; lower surface glabrous or with scattered, appressed or erect, uncinate hairs"	"Labichea lanceolata"
10	"Upper leaflet surface with numerous, erect, uncinate hairs; lower surface densely clothed with appressed, white hairs to 2 mm long, especially on the midrib"	"Labichea saxicola"
11	"Leaflets compressed and ±subterete or linear- to narrowly elliptic-oblong, to 2 mm wide; margins tightly recurved to conceal the lower surface except the midrib or portion of the midrib, or sometimes portion of the lower surface visible also"	"Labichea teretifolia"
11	"Leaflets not as above"	12
12	"Leaflets rigid, folded lengthwise and deeply channelled above or U-shaped in section, sometimes almost conduplicate, 1–3.5 mm wide"	"Labichea eremaea"
12	"Leaflets not as above"	13
13	"Upper leaflet surface sparingly to densely clothed with uncinate hairs; central leaflet of each leaf usually distinctly obovate-oblong"	"Labichea nitida"
13	"Upper leaflet surface usually glabrous; central leaflet of each leaf elliptic-oblong or narrowly oblong"	"Labichea lanceolata"
14	"Leaves unifoliolate"	"Labichea punctata"
14	"Leaves digitately or subdigitately 3–7-foliolate"	15
15	"Leaves 3–5-foliolate; central leaflet of each leaf disproportionately longer than the others, 2.5–9 cm long"	"Labichea rupestris"
15	"Leaves 5–7-foliolate; central leaflet of each leaf not disproportionately longer than the others, to 3 cm long"	16
16	"Sepals 4; branchlets usually with spreading hairs to 0.6 mm long; petiole to 1.5 mm long; lower leaflet surface usually with scattered, appressed hairs especially on the midrib"	"Labichea digitata"
16	"Sepals usually 5; branchlets with spreading hairs to 1.5 mm long and scattered, shorter, erect, uncinate hairs; petiole 1–5 mm long; lower leaflet surface glabrous except for scattered hairs to 1.75 mm long on the midrib and sometimes on the margins"	"Labichea stellata"