1	"At base and tip fruit evidently notched and wings narrower; leaflets or segments generally large"	2
1	"At base and tip fruit not evidently notched and wings not narrower; leaflets or segments small to large"	8
2	"Leaflets coarsely dentate or some 3-lobed but not pinnately so"	3
2	"Leaflets pinnately lobed, generally also toothed or irregularly cut"	5
3	"Leaf 1--2-ternate; fruit wings thickened, >> body in width; s California"	"Lomatium lucidum"
3	"Leaf ternate-pinnate or 1--2-pinnate; fruit wings thin, +- >= body in width; n CA"	4
4	"Plant < 8 dm; fruit wide-elliptic to round; KR"	"Lomatium howellii"
4	"Plant < 5 dm; fruit wide-oblong; NCoR"	"Lomatium repostum"
5	"Leaf blade > petiole; fruit 15--18 mm --- s ChI"	"Lomatium insulare"
5	"Leaf blade < to +- = petiole; fruit 6--14 mm"	6
6	"Leaflet spines weak; fruit wings >= body in width; CCo, SCoR"	"Lomatium parvifolium"
6	"Leaflet spines strong; fruit wings < body in width; SNH, SNE"	7
7	"Mature rays 25--50 mm; fertile pedicels 5--10 mm"	"Lomatium rigidum"
7	"Mature rays 1--11 mm; fertile pedicels 0.1--1 mm"	"Lomatium shevockii"
8	"Plant from a definite, spheric to elongate or irregularly thickened, generally +- shallow tuber"	9
8	"Plant from a generally elongated, deep taproot (rarely with a deep-seated tuber at tip)"	15
9	"Plant puberulent to hairy"	10
9	"Plant glabrous to +- scabrous but not hairy"	11
10	"Bractlets not scarious, +- fused, reflexing"	"Lomatium macrocarpum"
10	"Bractlets +- scarious, free to fused, not reflexing"	"Lomatium nevadense"
11	"Plant short-stemmed, from an elongate, generally tapered tuber; rays +- erect; fruit linear-oblong"	"Lomatium bicolor var. leptocarpum"
11	"Plant stem 0, from a +- spheric to ovoid tuber; rays +- spreading; fruit oblong to ovate"	12
12	"Pedicel 5--16 mm; bractlet +- = flower; tuber < 4 cm wide"	"Lomatium canbyi"
12	"Pedicel 0--4 mm; bractlet 0 or < flower; tuber <= 2.5 cm wide"	13
13	"Corolla yellow; leaves ternate-1--2-pinnate; rays 1--12 mm, n&c SNH"	"Lomatium stebbinsii"
13	"Corolla white; leaves 2--3-ternate; rays 10--50 mm; KR, n SNH, MP"	14
14	"Rays 2--5, 1--2 cm; pedicels 3--4 mm; fruit +- 5 mm, +- 4 mm wide; MP"	"Lomatium hendersonii"
14	"Rays 3--20, 1--6 cm; pedicels 0.5--2.5 mm; fruit 5--9 mm, 3--4 mm wide; KR, n SNH, MP"	"Lomatium piperi"
15	"Leaf dissected or compound, segments or leaflets generally few, generally large, generally wide"	16
15	"Leaf dissected, segments generally many, small, occasionally long but then narrow (see also <i>Lomatium parryi</i>)"	21
16	"Peduncle distally swollen, inflated"	"Lomatium nudicaule"
16	"Peduncle distally not swollen, not inflated --- rays occasionally webbed at base into prominent disk"	17
17	"Stem 0 or short; leaves 0--few. 1--3-pinnate"	18
17	"Stem prominently leafy; leaf 1--2-ternate-pinnate"	19
18	"Plant base not fibrous; calyx 0"	"Lomatium martindalei"
18	"Plant base fibrous; calyx prominent"	"Lomatium parryi"
19	"Herbage glaucous; leaflets wedge-shaped to obovate, 10--50 mm wide"	"Lomatium californicum"
19	"Herbage green to +- gray, not conspicuously glaucous; leaflets linear to lance-ovate, 0.5--10 mm wide"	20
20	"Ovary, generally fruit densely puberulent"	"Lomatium triternatum var. macrocarpum"
20	"Ovary, fruit glabrous"	"Lomatium triternatum var. triternatum"
21	"Ovary puberulent to scabrous or hairy, fruit hairy (glabrous in age)"	22
21	"Ovary, fruit glabrous, occasionally scabrous"	34
22	"Plants generally with definite stem --- stem leaves >= 1"	23
22	"Stem 0"	28
23	"Petals tomentose"	24
23	"Petals +- glabrous, not tomentose"	25
24	"Leaf segments linear; pedicels generally > fruit"	"Lomatium dasycarpum subsp. dasycarpum"
24	"Leaf segments thread-like; pedicels generally < fruit"	"Lomatium dasycarpum subsp. tomentosum"
25	"Involucel 1-sided, reflexing, not scarious"	"Lomatium macrocarpum"
25	"Involucel not 1-sided, not reflexing, generally +- scarious"	26
26	"Corolla white to cream; cauline leaf sheaths inconspicuous"	"Lomatium nevadense"
26	"Corolla yellow; cauline leaf sheaths swollen"	27
27	"Herbage densely puberulent to glabrous; ovaries puberulent; bractlets generally obovate to oblanceolate, generally overlapping"	"Lomatium utriculatum"
27	"Herbage, ovaries generally scabrous; bractlets generally lanceolate to oblanceolate, not overlapping"	"Lomatium vaginatum"
28	"Corolla white to cream, occasionally purple-tinged; anthers generally purple"	29
28	"Corolla yellow or purple; anthers generally yellow"	31
29	"Bractlets puberulent to hairy; leaf segments linear to lanceolate"	"Lomatium ravenii"
29	"Bractlets +- glabrous; leaf segments linear to oblong"	30
30	"Ovary and generally fruit densely fine-hairy"	"Lomatium nevadense var. nevadense"
30	"Ovary and fruit glabrous to +- scabrous"	"Lomatium nevadense var. parishii"
31	"Petiole > leaf blade; corolla generally purple (yellow); fruit wings >= body in width"	"Lomatium mohavense"
31	"Petiole < leaf blade; corolla yellow (+- purple); fruit wings generally 1/2 body in width"	32
32	"Petal margin minutely ciliate"	"Lomatium foeniculaceum subsp. fimbriatum"
32	"Petal margin glabrous"	33
33	"Rays generally 1, < 1.5 cm; subalpine scrub"	"Lomatium foeniculaceum subsp. inyoense"
33	"Rays generally 2--17, < 6 cm; sagebrush scrub, pine woodland"	"Lomatium foeniculaceum subsp. macdougalii"
34	"Plant generally with a definite stem, stem leaves generally >= 2"	35
34	"Plant stem +- 0, cauline leaves 0, occasionally 1 or more at base of short stem"	44
35	"Stem base with 1 or more scarious, bladeless sheaths; fruit oblong-ovate to elliptic, wings thick, << body in width"	36
35	"Stem base without conspicuous bladeless sheaths; fruit wings thin, < to > body in width"	37
36	"Fruit +- sessile; fertile pedicels generally 1--3 mm, < sterile"	"Lomatium dissectum var. dissectum"
36	"Fruit distinctly pedicelled; fertile pedicels generally 5--15 mm, > sterile"	"Lomatium dissectum var. multifidum"
37	"Corolla white, cream or +- purple"	38
37	"Corolla yellow, occasionally white in age"	40
38	"Plant glabrous to +- scabrous; bractlets 0--few, inconspicuous"	"Lomatium martindalei"
38	"Plant densely puberulent to tomentose; bractlets generally conspicuous, occasionally fused into a sheath"	39
39	"Involucel 1-sided, reflexing, not scarious"	"Lomatium macrocarpum"
39	"Involucel generally radial, spreading, scarious"	"Lomatium nevadense"
40	"Leaves generally not crowded at stem base; fruit wings >= body in width"	41
40	"Leaves crowded at stem base; fruit wings < body in width"	42
41	"Herbage puberulent to glabrous; ovaries generally puberulent --- fruit generally glabrous"	"Lomatium utriculatum"
41	"Herbage, generally ovaries minutely scabrous"	"Lomatium vaginatum"
42	"Fruit linear-oblong; leaf segments linear, 10--30 mm, not crowded"	"Lomatium bicolor var. leptocarpum"
42	"Fruit oblong to ovate; leaf segments linear to oblong, 2--7 mm, crowded"	43
43	"Leaf green, shiny, petiole sheathing to +- middle; bractlets free, inconspicuous; KR"	"Lomatium hallii"
43	"Leaf +- gray, dull, petiole +- sheathing throughout; bractlets fused at base into 1-sided scarious cup; CaRH, n SNH, GB"	"Lomatium plummerae"
44	"Fruit linear-oblong to oblong"	45
44	"Fruit elliptic or ovate to +- round"	47
45	"Plant base fibrous; bractlets 0; fruit wings narrow, < 1/2 body; SNH"	"Lomatium torreyi"
45	"Plant base not fibrous; bractlets several, linear; fruit wings narrow to broad, < or > 1/2 body; CaRH, MP"	46
46	"Fruit narrowly oblong, 10--12 mm, 2--5 mm wide, wings narrow, < 1/2 body; CaRH, MP"	"Lomatium bicolor var. leptocarpum"
46	"Fruit oblong, 8--16 mm, 5--9 mm wide, wings broad, > 1/2 body; MP"	"Lomatium grayi"
47	"Leaf segments thread-like to linear, long, not crowded; herbage green, generally shiny"	48
47	"Leaf segments lanceolate or oblong to ovate (linear to thread-like), short, generally crowded; herbage generally glaucous or +- gray"	51
48	"Bractlets generally > 5, lanceolate to obovate, scarious, occasionally 0; pedicels stout --- generally < fruit"	49
48	"Bractlets 0--5, thread-like to lance-linear, +- scarious-margined; pedicels slender"	50
49	"Bractlets wide; fruit wings +- thin, wide"	"Lomatium caruifolium var. caruifolium"
49	"Bractlets narrow, occasionally 0; fruit wings thick, narrow"	"Lomatium caruifolium var. denticulatum"
50	"Corolla yellow; interior foothills"	"Lomatium marginatum var. marginatum"
50	"Corolla +- red-purple; coast ranges"	"Lomatium marginatum var. purpureum"
51	"Herbage clearly puberulent to tomentose"	52
51	"Herbage glabrous to minutely scabrous or sparsely puberulent"	55
52	"Leaf 2--3-pinnately dissected or compound; petiole sheathing in proximal 1/2; corolla white; GB"	"Lomatium nevadense"
52	"Leaf ternate-pinnately dissected; petiole sheathing throughout; corolla yellow or purple; coast ranges"	53
53	"Corolla purple; bractlets scarious +- throughout"	"Lomatium hooveri"
53	"Corolla generally yellow; bractlets narrowly scarious-margined"	54
54	"Ultimate leaf sections overlapping, broad, obtuse; fruit +- elliptic, wings thick; serpentine substrates, NCoRH, NCoRI"	"Lomatium ciliolatum"
54	"Ultimate leaf sections less crowded, narrow, generally acute; fruit ovoid, wings thin; volcanic substrate, SnFrB"	"Lomatium observatorium"
55	"Pedicels generally > fruit; bractlets 0"	56
55	"Pedicels < fruit; bractlets present"	57
56	"Plant base fibrous; corolla pale yellow"	"Lomatium congdonii"
56	"Plant base not fibrous; corolla +- purple"	"Lomatium engelmannii"
57	"Leaf blade obovate, basal sheaths straw-colored; volcanic soils"	"Lomatium peckianum"
57	"Leaf blade oblong to ovate, basal sheaths +- purple; serpentine substrates"	"Lomatium tracyi"