Key 4

1	Leaves (at least outer) cartilaginous on margin or apex.		(2)
+	Leaves not cartilaginous on margin or apex.		(9)
2 (1)	Leaves homomorphic or obscurely heteromorphic.		(3)
+	Leaves distinctly dimorphic.		(5)
3 (2)	Leaf blade of outer leaves ovate to broadly ovate, 2-3.5 mm, apex recurved		30 Androsace squarrosula
+	Leaf blade linear to broadly lanceolate, 5-50 mm, erect.		(4)
4 (3)	Flowers 4-7(-10) in umbels; scapes 5-10 mm		31 Androsace longifolia
+	Flowers 1 or 2; scapes to 5 mm		32 Androsace alaschanica
5 (2)	Outer leaves spiny at apex		25 Androsace spinulifera
+	Outer leaves not spiny.		(6)
6 (5)	Flowers 2 to many, in terminal umbels.		(7)
+	Flowers solitary, rarely 2.		(8)
7 (6)	Bracts leaflike, cartilaginous at margin		26 Androsace graminifolia
+	Bracts not leaflike, not cartilaginous at margin		27 Androsace mariae
8 (6)	Leaf blade linear to subulate-lanceolate; corolla white		28 Androsace lehmannii
+	Leaf blade oblong to sublinear; corolla purple		29 Androsace cernuiflora
9 (1)	Leaves dimorphic or trimorphic, inner leaves distinctly longer than outer.		(10)
+	Leaves subequal or homomorphic.		(28)
10 (9)	Leaves trimorphic.		(11)
+	Leaves dimorphic.		(19)
11 (10)	Plants densely cespitose; rosettes solitary or superimposed on old rosettes, without intervals.		(12)
+	Plants laxly cespitose, with many open rosettes joined by slender shoots.		(14)
12 (11)	Pedicel ca. 2 X as long as bracts or more		35 Androsace strigillosa
+	Pedicel shorter than bracts.		(13)
13 (12)	Inner leaves 15-35 mm, hirsute		33 Androsace adenocephala
+	Inner leaves 5-15 mm, strigillose		34 Androsace cuttingii
14 (11)	Plants densely white sericeous		36 Androsace nortonii
+	Plants sparsely hirsute, pilose, or pubescent.		(15)
15 (14)	Inner leaves less than 3.5 mm wide, petiole indistinct.		(16)
+	Inner leaves 4-13 mm wide, distinctly petiolate.		(17)
16 (16)	Shoots hirsute; outer leaves ovate-lanceolate, sheathlike basal part 2-3 × as wide as upper part 40. A. rigida		(16)
+	Shoots pilose; outer leaves spatulate, sheathlike basal part only slightly wider than upper part		41 Androsace minor
17 (15)	Inner leaves elliptic to obovate-elliptic, villous		39 Androsace limprichtii
+	Inner leaves ovate to ovate-elliptic or suborbicular, sparsely pubescent.		(18)
18 (17)	Calyx sparsely pubescent; inner leaves ovate-elliptic to suborbicular, sparsely pubescent		37 Androsace hookeriana
+	Calyx glabrescent, except for ciliate margin; inner leaves ovate, densely pubescent		38 Androsace ovalifolia
19 (10)	Leaves white sericeous; stolons 5-8 cm, rust-colored villous		42 Androsace sarmentosa
+	Plants tomentose, hirsute, or pubescent, without stolons, usually with shoots.		(20)
20 (19)	Corolla pale yellow; bracts ligulate-oblong, leaflike		43 Androsace flavescens
+	Corolla pink or purple; bracts not as above.		(21)
21 (20)	Calyx glabrous except for ciliate margin.		(22)
+	Calyx pubescent.		(23)
22 (21)	Leaf rosette 1 or 2-4 on caudex, without sterile shoots		44 Androsace sublanata
+	Leaf rosette forming lax mats, with sterile shoots from flowering rosette		45 Androsace forrestiana
23 (21)	Inner leaves densely hirtellous, hairs very short.		(24)
+	Inner leaves long white hirsute, at least on margin.		(25)
24 (23)	Leaves distinctly dimorphic, outer leaves ca. 1/3 as long as inner or shorter, with long white hairs		46 Androsace wardii
+	Leaves obscurely dimorphic, outer leaves slightly smaller than inner, ciliate		47 Androsace zayulensis
25 (23)	Inner leaves glabrous adaxially, margin ciliate, with long and very short hairs intermixed		48 Androsace euryantha
+	Inner leaves pubescent on both surfaces.		(26)
26 (25)	Calyx pubescent along veins and near apex of lobes		27 Androsace mariae
+	Calyx pubescent throughout.		(27)
27 (26)	Inner leaves elliptic to suborbicular; calyx lobes ovate		50 Androsace laxa
+	Inner leaves spatulate to oblanceolate; calyx lobes triangular		51 Androsace stenophylla
28 (9)	Inner leaves with long soft white hairs, usually very dense and tufted on distal 1/2.		(29)
+	Inner leaves with coarse hairs or glabrescent, or only fimbriate-ciliate.		(37)
29 (28)	Leaf rosettes 2-3 mm in diam., superimposed, forming columns (leaves dimorphic in A. tapete).		(30)
+	Leaf rosettes more than 3 mm in diam., not forming columns.		(31)
30 (29)	Calyx villous outside		61 Androsace selago
+	Calyx villous only on lobe margin		62 Androsace tapete
31 (29)	Scapes 1- or 2-flowered, shorter than pedicel; leaf rosettes 4-8 mm in diam.		63 Androsace globifera
+	Scapes with an umbel, 2- to many flowered, distinctly longer than pedicel; leaf rosettes more than 10 mm in diam.		(32)
32 (31)	Pedicel at most slightly longer than bracts.		(33)
+	Pedicel at least 2 × as long as bracts.		(34)
33 (32)	Leaf rosettes forming loose tufts, internodes of shoots 1-2 × as long as leaf rosettes; corolla white, becoming pink; bracts elliptic to ovate-lanceolate		64 Androsace ovczinnikovii
+	Leaf rosettes forming dense mats; internodes of shoots usually shorter than leaf rosettes; corolla cream-colored with a pale purple or yellow eye; bracts linear to lanceolate		65 Androsace incana
34 (32)	Scapes 8-15 cm; pedicel 5-10 × as long as bracts		66 Androsace rockii
+	Scapes 0.5-5 cm; pedicel 2-3 × as long as bracts.		(35)
35 (34)	Leaf rosettes superimposed, without intervals; midvein and margin of leaves ± raised abaxially		67 Androsace bisulca
+	Leaf rosettes not superimposed, with intervals between rosettes; midvein and margin of leaves not raised abaxially.		(36)
36 (35)	Plants with leaves in tight globose rosettes; scapes long white sericeous		68 Androsace robusta
+	Plants with leaves in lax rosettes; scapes spreading hirtellous		69 Androsace pomeiensis
37 (28)	Flowers solitary.		(38)
+	Flowers 2 to many, in umbels.		(41)
38 (37)	Leaf blade broadly lanceolate to lanceolate, glabrescent		52 Androsace tanggulashanensis
+	Leaf blade liguliform to elliptic, pubescent at least on margin.		(39)
39 (38)	Leaf rosettes superimposed without intervals, forming columns, 2.5-4 mm in diam.		53 Androsace ciliifolia
+	Leaf rosettes at intervals, not forming columns, 5-8 mm in diam.		(40)
40 (39)	Leaf blade obovate, adaxially glabrescent, abaxially fimbriate-ciliate		54 Androsace delavayi
+	Leaf blade narrowly obovate to spatulate, inner leaves white villous on both surfaces		63 Androsace globifera
41 (37)	Leaf rosettes more than 1.5 cm in diam.; inner leaves distinctly longer than outer		55 Androsace lehmanniana
+	Leaf rosettes less than 1.3 cm in diam., inner leaves ca. as long as outer.		(42)
42 (41)	Inner leaves subobovate, 1.5-2.5 mm wide, fimbriate-ciliate at apex.		(43)
+	Inner leaves linear to oblong or elliptic, 0.6-1.5 mm wide, not fimbriate ciliate at apex.		(44)
43 (42)	Inner leaves ± incurved; bracts usually 2, ca. 2 × as long as pedicel		54 Androsace delavayi
+	Inner leaves flat; bracts several, shorter than pedicel		60 Androsace mollis
44 (42)	Leaves hirtellous.		(45)
+	Leaves glabrous at least abaxially.		(46)
45 (44)	Leaf rosettes globose, on nodes of shoots with internodes		56 Androsace zambalensis
+	Leaf rosettes not globose, leaves overlapping on branched caudicules		57 Androsace coronata
46 (44)	Outer leaves whitish, scarious when dry; bracts ovate to ovate-oblong, shorter than pedicel		58 Androsace brachystegia
+	Outer leaves deep reddish brown when dry, not scarious; bracts elliptic to oblong, longer than pedicel		59 Androsace yargongensis