1	"Style entire or with lobes < 1.5 mm"	2
1	"Style with branches > 1.5 mm"	5
2	"Leaves in 1--3 whorls of 4--8 below, those subtending flowers alternate"	"Fritillaria brandegeei"
2	"Leaves alternate to subopposite"	3
3	"Perianth 0.8--2.2 cm, yellow to orange; ne California"	"Fritillaria pudica"
3	"Perianth 2--3.5 cm, white to pink or purple; not ne CA"	4
4	"Flowers nodding, fragrant, bell-shaped, perianth parts white to pink, oblanceolate, tips acute to short-tapered, spreading to recurved; s SNF"	"Fritillaria striata"
4	"Flowers spreading to +- erect, nodding in age, not notably fragrant, not bell-shaped, perianth parts pink-purple, obovate, tips rounded to acute, not recurved; NCoRI, n SNF, edges of ScV"	"Fritillaria pluriflora"
5	"Perianth scarlet to +- purple, generally mottled yellow and/or purple; tips strongly recurved or spreading"	6
5	"Perianth not both scarlet to +- purple and mottled, tips generally not recurved (generally recurved or flared in <i>Fritillaria eastwoodiae</i>)"	7
6	"Perianth bell-shaped, tips spreading, nectary 1/2 perianth"	"Fritillaria gentneri"
6	"Perianth tubular, tips generally strongly recurved, nectary 1/5--1/4 perianth"	"Fritillaria recurva"
7	"Leaves > 10 or in whorls of 2--8 on lower stem, not sickle-shaped"	8
7	"Leaves <= 10 or alternate (crowded), occasionally sickle-shaped"	14
8	"Flowers spreading to +- erect; upper leaves +- 1/3--1/2 lowest leaf; leaves often >= inflorescence"	"Fritillaria pinetorum"
8	"Flowers generally nodding (+- spreading); upper leaves generally +- = lowest leaf; leaves generally < inflorescence"	9
9	"Perianth purple-brown, mottled yellow or white; leaves 2--3 per node; 1000--3200 m, especially inland mtns"	"Fritillaria atropurpurea"
9	"Perianth dark purple, green-white, green-yellow, or red to +- black; leaves generally >= 3 per node; < 1800 m, especially coastal mtns (notable exceptions including <i>Fritillaria micrantha</i>, <i>Fritillaria eastwoodiae</i>)"	10
10	"Perianth dull green-yellow, dark-spotted; nectary +- diamond-shaped to ovate"	"Fritillaria ojaiensis"
10	"Perianth green-white, pale green or +- green or yellow to red or dark purple to +- black, mottled (especially <i>Fritillaria affinis</i>); nectary lanceolate or narrower"	11
11	"Perianth pale green to +- black (dark purple), not mottled; nectary +- 1/2 perianth; small bulb scales 0--4; SCoRO(?), SCoRI (Monterey, San Benito, San Luis Obispo cos.)"	"Fritillaria viridea"
11	"Perianth green-white or -yellow to red or +- purple, mottled or not; nectary < 1/2 perianth (1/2--2/3 in <i>Fritillaria affinis</i>); small bulb scales generally >= 10 (< 10 in <i>Fritillaria affinis</i>); NW, CaR, SN, CW"	12
12	"Perianth generally > 2 cm, generally clearly yellow- or purple-mottled, margins wavy --- NW, CaR, n SNF, CW (except SCoRI)"	"Fritillaria affinis"
12	"Perianth generally < 2 cm, not (or faintly) mottled, margins not wavy"	13
13	"Style branches not or +- recurved; perianth +- green to yellow to red, tips generally recurved or flared; nectary green, gold, or yellow; CaR (Shasta, Tehama, Butte cos.)"	"Fritillaria eastwoodiae"
13	"Style branches recurved; perianth +- purple to green-white, tips not recurved or flared; nectary green-white, dotted purple; SN"	"Fritillaria micrantha"
14	"Perianth clearly mottled (white with purple spots or lines and pink shading in <i>Fritillaria purdyi</i>); small bulb scales generally > 10 (0--3 in <i>Fritillaria purdyi</i>)"	15
14	"Perianth not clearly mottled; small bulb scales < 10"	18
15	"Leaves sickle-shaped; flowers +- erect; SnFrB, SCoRI (San Benito Co.)"	"Fritillaria falcata"
15	"Leaves generally not sickle-shaped; flowers nodding or spreading (spreading to +- erect in <i>Fritillaria pinetorum</i>); not SnFrB, SCoRI (San Benito Co.)"	16
16	"Leaves 2--10, ovate, sickle-shaped or not; perianth white, spotted or lined purple; small bulb scales 0--3"	"Fritillaria purdyi"
16	"Leaves generally > 4, not sickle-shaped, perianth purple-brown, mottled yellow or white; small bulb scales 45--50"	17
17	"Flowers nodding; upper leaves +- <= lowest cauline leaf; cauline leaves generally < inflorescence; KR, CaR, SN, GB, DMtns"	"Fritillaria atropurpurea"
17	"Flowers spreading to +- erect; upper leaves +- 1/3--1/2 lowest cauline leaf; cauline leaves often >= inflorescence; c SNH (Mono, Inyo cos.), Teh, TR"	"Fritillaria pinetorum"
18	"Leaves 2--4, sickle-shaped"	"Fritillaria glauca"
18	"Leaves generally > 4, not sickle-shaped"	19
19	"Nectary an obscure narow band 1/2--2/3 perianth; perianth white, striped green"	"Fritillaria liliacea"
19	"Nectary a prominent narrow band 2/3 to = perianth; perianth brown, purple-brown, or green-purple at least adaxially"	20
20	"Perianth green-white or yellow abaxially, purple-brown adaxially; flower ill-scented"	"Fritillaria agrestis"
20	"Perianth dark brown, green-purple or yellow-green; flower ill-scented or not"	21
21	"Leaves narrowly ovate to oblong; flower not ill-scented"	"Fritillaria biflora var. biflora"
21	"Leaves linear to narrowly lanceolate; flower ill-scented"	"Fritillaria biflora var. ineziana"