1	"Flower nodding; perianth +- closed, spheric to oblong"	2
1	"Flower erect to spreading; perianth open, bell-shaped or +- rotate"	6
2	"Petal white, pink, or rose"	3
2	"Petal yellow"	4
3	"Sepal appressed to petals; lower nectary membrane 1/3--2/3 petal width; petal generally white to pink; n&c SNF, CW, n ChI, WTR, SnBr, PR"	"Calochortus albus"
3	"Sepal spreading, not appressed to petals; lower nectary membrane +- = petal width; petal rose; c SNF (Madera, Fresno cos.), s SN"	"Calochortus amoenus"
4	"Stem generally simple above base; petals > sepals, hairy; plant generally 10--100 cm, very glaucous"	"Calochortus raichei"
4	"Stem generally branched above base; petals generally <= sepals, glabrous to sparsely hairy; plant generally < 30(50) cm, not very glaucous"	5
5	"Plant +- glaucous; petal deep yellow; KR, NCoRO, NCoRI, nw SnFrB"	"Calochortus amabilis"
5	"Plant green; petal light yellow; ne SnFrB (Mount Diablo, Contra Costa Co.)"	"Calochortus pulchellus"
6	"Fruit nodding; petal +- not spotted or striped (or above-ground stem < 10 cm) (sect. <i>Calochortus</i> in part)"	7
6	"Fruit erect; petal spotted or striped (except <i>Calochortus nudus</i>, occasionally <i>Calochortus palmeri</i>)"	15
7	"Petal generally > 30 mm, pink to +- purple; ne KR (Siskiyou Co.)"	"Calochortus persistens"
7	"Petal generally < 28 mm, color various; widespread except s CA"	8
8	"Petal +- glabrous adaxially"	9
8	"Petal +- conspicuously hairy adaxially"	11
9	"Cauline leaves +- 0; SNH"	"Calochortus minimus"
9	"Cauline leaves present; NW, n&c CCo, SnFrB"	10
10	"Stem 8--25 cm, branched, bulblets 0; s NCoRO, SnFrB"	"Calochortus umbellatus"
10	"Stem generally < 5 cm, generally simple, bulblets present; NW, n&c CCo, SnFrB"	"Calochortus uniflorus"
11	"Petal deep yellow --- CaRF, n&c SNF, n SNH"	"Calochortus monophyllus"
11	"Petal white, pink, purple, or blue"	12
12	"Petal lanceolate to obovate, +- ciliate on sides but not tip"	13
12	"Petal +- oblanceolate to obovate, ciliate throughout"	14
13	"Petal obovate to wedge-shaped; stem simple or branched; NW, CaRH, n ScV, n CCo, SnFrB"	"Calochortus tolmiei"
13	"Petal lanceolate; stem simple; s SNH (Greenhorn Mtns)"	"Calochortus westonii"
14	"Petal +- blue (purple crescent 0), +- smooth (not bumpy) adaxially; NW, CaR, SNH"	"Calochortus coeruleus"
14	"Petal green-white, base dark +- purple, minute-bumpy adaxially; e KR, NCoRI"	"Calochortus elegans"
15	"Basal leaf +- persistent at flower"	16
15	"Basal leaf +- withered by flowering (except <i>Calochortus excavatus</i>, <i>Calochortus syntrophus</i>)"	19
16	"Petal light yellow-green, flecked purple-brown; n CCo (Ring Mtn, Marin Co.)"	"Calochortus tiburonensis"
16	"Petal white to purple; KR, CaR, MP"	17
17	"Petal with red-purple crescent above nectary adaxially"	"Calochortus longebarbatus var. longebarbatus"
17	"Petal without crescent adaxially"	18
18	"Petal 30--40 mm with dark purple crescent abaxially; nectary deeply depressed; dry places; < 1100 m"	"Calochortus greenei"
18	"Petal 14--16 mm, without crescent abaxially; nectary +- shallow; moist places; > 1200 m"	"Calochortus nudus"
19	"Nectary surface +- glabrous but +- hidden by bordering hairs; bulb coat fibrous --- s CW, SW"	20
19	"Nectary surface hairy; bulb coat membranous"	24
20	"Petal +- pink, generally toothed, not ciliate"	"Calochortus plummerae"
20	"Petal tan, yellow, +- purple to red-brown, generally +- ciliate"	21
21	"Petal tip dark-hair-tufted"	"Calochortus obispoensis"
21	"Petal tip fringed, not hair-tufted"	22
22	"Petal margin fringed with 2 rows of hairs; anthers abruptly pointed; SCoRO, WTR"	"Calochortus fimbriatus"
22	"Petal margin fringed with 1 row of hairs; anthers rounded; SCoRO, SCo, WTR, PR"	23
23	"Petal deep yellow"	"Calochortus weedii var. weedii"
23	"Petal light yellow or tan or dark +- purple to red-brown"	"Calochortus weedii var. intermedius"
24	"Nectary +- round, clearly depressed, encircled by fringed membrane"	25
24	"Nectary not simultaneously round, depressed, and surrounded by fringed membrane (but occasionally 1 of these)"	36
25	"Petal generally orange to red"	"Calochortus kennedyi var. kennedyi"
25	"Petal yellow, gold, or white generally tinged lilac or lavender"	26
26	"Petal white, tinged lilac, or lavender, green-striped abaxially; sepal occasionally dark-spotted"	27
26	"Petal yellow or gold, not green-striped abaxially; sepal base generally dark-spotted"	30
27	"Petal base marked dark purple; bracts generally 3--8 cm; anthers red-brown --- sw SNE"	"Calochortus excavatus"
27	"Petal base white or tinged lilac; bracts 2--7 cm; anthers yellow, maroon, blue, purple, red or red-brown"	28
28	"Sepal base not spotted; petal obovate to wedge-shaped"	"Calochortus invenustus"
28	"Sepal base dark-spotted; petal narrowly obovate"	29
29	"Petal with red or purple arch above nectary; nectary in yellow spot; n SNH, MP, s SNE"	"Calochortus bruneaunis"
29	"Petal without dark arch above nectary; nectary in red or purple spot; n DMtns (Panamint Range)"	"Calochortus panamintensis"
30	"Perianth bell-shaped; nectary encircled by slender or club-shaped hairs; stem straight or occasionally twisted --- SnBr, PR, n&e DMtns"	31
30	"Perianth cup-shaped; nectary encircled by club-shaped hairs; stem often zigzag"	32
31	"Leaves flat or inrolled; nectary encircled by dense, slender hairs; stem straight, generally stout; SnBr (s slope), PR"	"Calochortus concolor"
31	"Leaves channeled; nectary encircled by sparse, club-like hairs; stem occasionally twisted; n&e DMtns (Panamint, Clark Mtn ranges, Providence Mtns)"	"Calochortus kennedyi var. munzii"
32	"Petal generally < sepal; nectary deep --- n SNF (El Dorado, Amador cos.)"	"Calochortus clavatus var. avius"
32	"Petal >= sepal; nectary shallow to +- deep"	33
33	"Stem generally < 30 cm, slender, straight"	34
33	"Stem generally 50--100 cm, coarse, zigzag"	35
34	"Petal 30--40 mm, sparsely hairy; leaves not recurved; WTR, SnGb"	"Calochortus clavatus var. gracilis"
34	"Petal 40--50 mm, hairy; leaves strongly recurved; s-c CCo (nw San Luis Obispo Co.)"	"Calochortus clavatus var. recurvifolius"
35	"Petal deep yellow, hairs very knobby; anther deep purple; s SCoRO, n SCoRI, WTR, SnGb"	"Calochortus clavatus var. clavatus"
35	"Petal light yellow, hairs not very knobby; anther yellow to purple; w SnJV (and adjacent e SnFrB, SCoRI), n WTR"	"Calochortus clavatus var. pallidus"
36	"Stem bulblets generally 0 (except some <i>Calochortus splendens</i>)"	37
36	"Stem bulblets generally present (except <i>Calochortus palmeri</i> var. <i>munzii</i>)"	40
37	"Petal purple-veined, not spotted"	"Calochortus striatus"
37	"Petal spotted, not obviously veined or striped"	38
38	"Stem twining or sprawling; perianth yellow-banded"	"Calochortus flexuosus"
38	"Stem +- erect; perianth not yellow-banded"	39
39	"Petal white or flushed pink, red-brown-spotted above nectary, nectary yellow-hairy; s PR (s San Diego Co.)"	"Calochortus dunnii"
39	"Petal lavender to deep purple, base generally purple-spotted, not yellow-hairy; c&s NCoRI, CW, w SW, SnJt"	"Calochortus splendens"
40	"Petal bright or deep yellow"	41
40	"Petal white to pink, purple, lavender, or red"	43
41	"Nectary generally +- square"	"Calochortus venustus"
41	"Nectary chevron- or crescent-shaped to oblong"	42
42	"Petal pale yellow"	"Calochortus argillosus"
42	"Petal deep yellow"	"Calochortus luteus"
43	"Petal light to deep lilac, lavender, or variably colored --- generally with sparse white hairs near base; not striped, highly patterned"	"Calochortus splendens"
43	"Petal all or variably white, pink, purple, or red"	44
44	"Nectary +- ovate or oblong (occasionally +- round)"	45
44	"Nectary 1--2 crescents or chevrons, +- triangular, +- square, or +- elliptic"	49
45	"Anther sagittate --- CaRH, SNH, MP"	"Calochortus leichtlinii"
45	"Anther not sagittate"	46
46	"Fruit narrowly oblong, not angled"	"Calochortus catalinae"
46	"Fruit linear, angled"	47
47	"Petals generally 40--50 mm; nectary hairs slender; ne KR (near Yreka, Siskiyou Co.)"	"Calochortus monanthus"
47	"Petals generally 20--30 mm; nectary hairs thick; Teh, s CW, TR, SnJt"	48
48	"Nectary glabrous or purple-hairy; stem bulblets 0; bracts opposite; SnJt"	"Calochortus palmeri var. munzii"
48	"Nectary yellow-hairy; stem bulblets present; bracts alternate; Teh, s CW, TR, SnJt"	"Calochortus palmeri var. palmeri"
49	"Nectary +- triangular-sagittate; sepals generally > petals"	"Calochortus macrocarpus"
49	"Nectary 1--2 crescents or chevrons or +- square or +- elliptic; sepals <= petals"	50
50	"Nectary +- square"	51
50	"Nectary 1--2 crescents, chevrons, or +- elliptic"	52
51	"Nectary in red spot; 2nd, distal, paler petal spot 0 (present); seed 5--6 mm, 3 mm wide"	"Calochortus simulans"
51	"Nectary not in red spot; 2nd, distal, paler petal spot generally present; seed 4--5 mm, 1--2 mm wide"	"Calochortus venustus"
52	"Nectary 2 crescents or chevrons"	"Calochortus vestae"
52	"Nectary 1 crescent, chevron, or +- elliptic"	53
53	"Nectary hairs orange; petal light yellow basally; basal leaves generally persistent; CaR (The Cove, Shasta Co.)"	"Calochortus syntrophus"
53	"Nectary hairs red-brown or brown; petal highly variable in color basally, often purple-lined near base; basal leaves generally withering; NW, CaRF, SNF, s SNH, CW, SW"	54
54	"Fruit lanceolate; w CW"	"Calochortus argillosus"
54	"Fruit linear; NW, CaRF, SNF, s SNH, CW, SW"	"Calochortus superbus"