1	Flowers all chasmogamous, usually longer than 10 mm, in compound racemes; standard usually pink to rose-purple, rarely yellowish or white; loments shortly stipitate; shrubs to subshrubs (L. subg. Macrolespedeza (Maximowicz) H. Ohashi)		(2)
+	Flowers chasmogamous and cleistogamous (except L. forrestii), usually less than 10 mm (except L. gerardiana), in ± elongated racemes of chasmogamous flowers with basal fascicles of cleistogamous flowers, or composed only of fasciculate racemes of cleistogamous flowers; standard white to yellowish or purplish; loments sessile or subsessile; herbs to subshrubs (L. subg. Lespedeza)		(9)
2 (1)	Inflorescences almost sessile, not longer than subtending leaves; lateral and lowermost calyx lobes acuminate to caudate		(3)
+	Peduncles distinct, inflorescences longer than subtending leaves; lateral and lowermost calyx lobes obtuse or acute to acuminate		(4)
3 (2)	Leaflets broadly ovate, ovate-elliptic, or obovate; bracteoles nearly 1/2 as long as calyx tube; wings longer than keels; legumes globose, less than 7 mm.		1 L. cyrtobotrya
+	Leaflets ovate-oblong to oblong; bracteoles ca. as long as calyx tube; wings equal to keels; legumes oblong-ellipsoidal, 13-15 mm.		2 L. fordii
4 (2)	Winter buds depressed, scales distichously arranged; leaflets sharply acute, rarely obtuse; branches woody		(5)
+	Winter buds thickened, scales spirally arranged; leaflets rounded, obtuse, or acute; branches herbaceous to herbaceous-woody		(7)
5 (4)	Corolla pale yellow; calyx lobes acute and not spine-tipped at apex.		3 L. buergeri
+	Corolla red-purple; calyx lobes acuminate to caudate and spine-tipped at apex		(6)
6 (5)	Leaflets acute and sharply pointed at apex; standard longer than keel.		5 L. maximowiczii
+	Leaflets obtuse to rounded or retuse at apex; standard shorter than keel.		7 L. dunnii
7 (4)	Lateral calyx lobes ovate or triangular to narrowly ovate, apically acute to shortly acuminate, rarely obtuse, less than 2.5 mm; keel claw nearly as long as keel lamina; legumes orbicular.		8 L. bicolor
+	Lateral calyx lobes narrowly ovate to narrowly triangular, apically acuminate, longer than 4 mm; keel claw nearly 1/2 as long as keel lamina; legumes ovoid, obovoid, or obovoid-oblong		(8)
8 (7)	Stems distinctly angled, densely spreading tomentose; leaflets thickly papery, broadly ovate-elliptic; calyx lobes long acuminate; legumes ovoid.		6 L. davidii
+	Stems terete or striate, appressed sericeous; leaflets papery, usually ovate-elliptic; calyx lobes acute to acuminate; legumes obovoid or obovoid-oblong.		4 L. thunbergii
9 (1)	Stems procumbent to weakly ascending, spreading pilose, rarely appressed sericeous		(10)
+	Stems erect or strongly ascending, mostly appressed sericeous		(13)
10 (9)	Leaflets narrowly obovate; stem short, usually less than 20 cm; corolla pink to purplish red; cleistogamous flowers and legumes unknown.		11 L. forrestii
+	Leaflets broadly obovate or broadly elliptic to orbicular; stem elongated, more than 20 cm; both chasmogamous and cleistogamous flowers and legumes known		(11)
11 (10)	Corolla reddish purple; plants spreading pilose, rarely appressed sericeous.		10 L. fasciculiflora
+	Corolla yellow-white or white; plants densely spreading pilose		(12)
12 (11)	Leaflets broadly obovate or broadly elliptic to orbicular, both surfaces densely spreading pilose.		9 L. pilosa
+	Leaflets narrowly oblong, rarely elliptic to broadly elliptic, abaxially grayish white hispid, adaxially glabrous.		17 L. potaninii
13 (9)	Stems tomentose		(14)
+	Stems appressed sericeous		(15)
14 (13)	Stems densely tomentose throughout; leaflets elliptic or ovate-oblong, 3-6 × 1.5-3 cm, abaxially densely tomentose.		14 L. tomentosa
+	Stems tomentose at upper part, downward more sparsely so; leaflets obovate or obcordate, 1-2 × 1-1.3 cm, abaxially densely hirsute.		16 L. mucronata
15 (13)	Leaflets narrowly elliptic or narrowly obovate (length:width ratio 3:1-6:1) to linear (length:width ratio 12:1), without visible reticulate venation between principle lateral veins; inflorescence sessile or peduncle 2 mm or less (except L. caraganae)		(16)
+	Leaflets elliptic (length:width ratio 3:2) or narrowly elliptic-obovate (length:width ratio 3:1-6:1) with visible (with lens) reticulate venation or a thin central vein between principle lateral veins; peduncle usually more than 2 mm		(20)
16 (15)	Leaflets narrowly obovate (length:width ratio 6:1) above middle; flowers more than 10 mm; calyx with lobes 5-6 mm; bracteoles distinct, 4-5 mm.		23 L. gerardiana
+	Leaflets ± narrowly elliptic (length:width ratio 3:1) to linear (length:width ratio 12:1); flowers less than 10 mm; calyx with lobes less than 3 mm; bracteoles minute, less than 3 mm		(17)
17 (16)	Leaflets oblong-linear (length:width ratio 6:1); principle lateral veins reaching margin and then running upward along margin; lateral calyx lobes sharply narrowly triangular (more than 3 × as long as tube); peduncle 2 mm or more.		19 L. caraganae
+	Leaflets narrowly elliptic to narrowly obovate (length:width ratio 3:1-6:1); principle lateral veins not reaching margin but running upward within margin; lateral calyx lobes narrowly triangular or slightly narrowly ovate (less than 3 × as long as tube); inflorescence sessile or peduncle less than 2 mm		(18)
18 (17)	Flowers reddish purple; corolla almost or more than 2 × as long as calyx; lateral calyx lobes narrowly ovate; abaxial surface of leaflets densely sericeous with rather thick hairs.		24 L. lichiyuniae
+	Flowers white; corolla 1.3-1.5 × as long as calyx; lateral calyx lobes narrowly triangular		(19)
19 (18)	Abaxial surface of leaflets densely appressed or ascending pubescent; bracteoles 1.5-2.5 mm, longer than calyx tube; calyx densely pubescent, lobes with 3-5 conspicuous veins in flower; corolla 1.3-1.5 × as long as calyx.		25 L. hispida
+	Abaxial surface of leaflets sparsely appressed pubescent; bracteoles less than 1.5 mm, almost equal to or shorter than calyx tube; calyx sparsely appressed pubescent; corolla more than 1.5 × as long as calyx.		20 L. cuneata
20 (15)	Leaflets narrowly elliptic-obovate (length:width ratio 3:1-6:1); calyx lobes ca. 2 × as long as tube		(21)
+	Leaflets elliptic (length:width ratio ca. 3:2) to narrowly elliptic (length:width ratio 3:1); calyx lobes more than 3 × as long as tube		(22)
21 (20)	Leaflets length:width ratio ca. 3:1, large ones more than 5 mm wide; pedicel ca. 1 mm; lateral calyx lobes narrowly acuminately ovate, distinctly veined in flower.		22 L. inschanica
+	Leaflets length:width ratio ca. 6:1, large ones less than 5 mm wide; pedicel 3-4 mm; lateral calyx lobes narrowly triangular, inconspicuously veined in flower.		21 L. juncea
22 (20)	Leaflet with a thin central vein between principle lateral veins; inflorescence usually densely several to ca. 10-flowered		(23)
+	Leaflet with reticulate venation between principle lateral veins; inflorescence laxly few flowered or densely flowered		(24)
23 (22)	Flowers white; calyx lobes linear to narrowly triangular (length:width ratio 6:1-12:1); bracteoles longer than calyx tube; cleistogamous legumes with caudate apex.		18 L. chinensis
+	Flowers reddish purple; calyx lobes narrowly ovate (length:width ratio 6:1); bracteoles shorter than calyx tube; cleistogamous legumes with rounded apex.		12 L. floribunda
24 (22)	Leaflets elliptic (length:width ratio ca. 3:2); inflorescence laxly few flowered; peduncles filiform, glabrous; flowers sessile or pedicel less than 1 mm; bracteoles shorter than calyx tube.		13 L. virgata
+	Leaflets narrowly elliptic to elliptic (length:width ratio 2:1-3:1); inflorescence densely flowered; peduncles pubescent; pedicel 1-3 mm; bracteoles longer than calyx tube.		15 L. davurica