1	"Plant with all the following: sepals pink to deep rose-pink; fruit erect; pedicels +- ascending, hairs glandular, yellow; angle between claw and blade on lower petals > 130°; s SN, w edge DMoj"	"Delphinium purpusii"
1	"Plant with at least 1 exception to character states at 1."	2
2	"Leaf blade base tapered, lobes few, < 50% to petiole; serpentine streambanks, chaparral, grassland"	"Delphinium uliginosum"
2	"Leaf blade base cordate, truncate, or rounded, lobes (3)5--many, > 50% to petiole; generally not on serpentine"	3
3	"Sepals +- red or yellow; blade of lower petals angled 140--180&deg; to claw, hairs +- 0 to naked eye"	4
3	"Sepals generally variously blue, occasionally white, green-white, lavender, maroon, purple, or pink but not red or yellow; blade of lower petals angled 60--130&deg; to claw, hairs apparent to naked eye"	6
4	"Seed without inflated collar; fruit +- straight; plants of +- dry sites; SCoR, SW, w edge DSon"	"Delphinium cardinale"
4	"Seed with inflated collar at widest end: fruit curved; plants of moist sites; SCoRO & n"	5
5	"Sepals bright yellow"	"Delphinium luteum"
5	"Sepals scarlet to orange-red (dull yellow)"	"Delphinium nudicaule"
6	"Plant with all the following: inflorescence +- 1-sided; flower generally on and after 15 June; 1800--2600 m; stem generally 7--40(60) cm; pedicels ascending; seed winged, without inflated collar at widest end; root < 5 cm; CaRH, n&c SNH, Wrn"	"Delphinium depauperatum"
6	"Plant with 2 or more exceptions to character states at 6."	7
7	"Seed with inflated collar at widest end, unwinged; fruit +- curved; inflorescence in mid-flower with generally < 6 flowers on main axis or oldest open-flowered pedicels generally > 25 mm and > 2 &times; youngest"	8
7	"Seed generally without inflated collar (except <i>Delphinium andersonii</i>), winged or not; fruit +- straight; inflorescence in mid-flower with generally > 6 flowers on main axis or oldest open-flowered pedicel generally < 25 mm or < 2 &times; youngest"	17
8	"Most leaves on distal 2/3 of stem; stem (40)50--120(180) cm; flowers on main inflorescence axis generally > 15"	9
8	"Most leaves on proximal 2/3 of stem; stem < 50(90) cm; flowers on main inflorescence axis generally < 20"	10
9	"Leaf lobe tips crenate; n CCo, n SnFrB (Marin Co.)"	"Delphinium bakeri"
9	"Leaf lobe tips sharply, irregularly cut; NCo, NCoRO (n of Sonoma Co.)"	"Delphinium trolliifolium"
10	"Sepals dark blue-purple (generally faded, mottled on herbarium specimens), puberulent abaxially, generally not reflexed; proximal stem hairy; lower petal blades 6--11 mm"	11
10	"Sepals generally bright blue to white or pink (generally neither faded nor mottled on herbarium specimens), generally glabrous, generally reflexed; proximal stem glabrous to puberulent; lower petal blades 3--11 mm (if sepals +- purple, puberulent abaxially, not reflexed, then proximal stem +- glabrous or lower petal blade < 6 mm)"	12
11	"Leaf generally with 5 lobes > 50% to petiole; < 200 m; open coastal grassland, chaparral"	"Delphinium decorum subsp. decorum"
11	"Leaf generally with > 5 lobes > 50% to petiole; 700--2300 m; meadows in montane forest"	"Delphinium decorum subsp. tracyi"
12	"Leaf +- fleshy; plant restricted to moist talus slopes"	"Delphinium antoninum"
12	"Leaf not fleshy; plant not restricted to moist talus slopes"	13
13	"Leaf with >= 6 lobes > 50% to petiole, < 7 mm wide; pedicels glabrous or puberulent; SNH and n"	"Delphinium nuttallianum"
13	"Leaf with <= 5 lobes > 50% to petiole, generally > 7 mm wide; pedicels glabrous to glandular or glandular-puberulent (if > 5 lobes > 50% to petiole, then pedicels puberulent); SN, SCoRI and s"	14
14	"Terminal leaf lobe widest above middle; pedicel at 70--90&deg; angle to axis; leaf lobes generally 5"	"Delphinium gracilentum"
14	"Terminal leaf lobe widest near middle; pedicel at generally < 70&deg; angle to axis; leaf lobes 3--10"	15
15	"Lobes of proximal leaves generally > 1.5 cm wide; basal, proximal cauline leaves generally cut < 80% to petiole --- SCoRO, SW (except ChI)"	"Delphinium patens subsp. hepaticoideum"
15	"Lobes of proximal leaves generally < 1.5 cm wide; basal (if present), proximal cauline leaves generally cut > 80% to petiole"	16
16	"Pedicels puberulent"	"Delphinium patens subsp. montanum"
16	"Pedicels generally glabrous"	"Delphinium patens subsp. patens"
17	"Stems generally > 1 m, generally >= 2; enlarged rootstock buds in life generally +- white, brown on herbarium specimens"	18
17	"Stem generally < 1 m, generally 1; enlarged rootstock buds generally 0"	23
18	"Flower generally June or earlier; sepals +- lavender or +- green-white, puberulent; < 1100 m"	19
18	"Flower generally July or later; sepals generally +- blue, +- canescent; <= 3600 m (if sepals +- lavender or +- green- white, then > 1100 m)"	20
19	"Sepals +- lavender; main inflorescence axis puberulent; upper petals +- hairy"	"Delphinium californicum subsp. californicum"
19	"Sepals +- green-white; main inflorescence axis +- glabrous; upper petals +- glabrous"	"Delphinium californicum subsp. interius"
20	"Leaves present on proximal 1/5 of stem in flower"	21
20	"Leaves generally 0 on proximal 1/5 of stem in flower"	22
21	"Flower spur 9--12 mm; sepals white to light blue"	"Delphinium inopinum"
21	"Flower spur 11--22 mm; sepals dark blue"	"Delphinium polycladon"
22	"Sepals +- purple-blue, abaxial midline not lighter; proximal stem glaucous; KR, SNH, SnGb, SnBr, n SNE"	"Delphinium glaucum"
22	"Sepals +- bright blue, abaxial midline lighter due to hairs; proximal stem puberulent; Wrn"	"Delphinium stachydeum"
23	"Proximal petiole hairs > 0.5 mm, straight, spreading, white, and some not"	24
23	"Proximal petiole hairs 0--0.5 mm, or curved, or both (if some > 0.5 mm, straight, then plant of NW or SnFrB, seeds winged)"	30
24	"Seeds fine-prickly, fuzzy to naked eye; lateral sepals 7--13 mm; flowers generally > 12 on main axis"	25
24	"Seeds not prickly, not fuzzy to naked eye; lateral sepals 10--25 mm; flowers generally < 12 on main axis"	27
25	"Sepals violet-purple to maroon --- SNF, SnJV"	"Delphinium hansenii subsp. ewanianum"
25	"Sepals dark blue-purple to white or pink"	26
26	"Basal leaves generally 0 in flower; cauline leaves >= 3; NCoRI, CaRF, SNF, c&s SNH, ScV"	"Delphinium hansenii subsp. hansenii"
26	"Basal leaves present but generally dry in flower (so 0 on herbarium specimens); cauline leaves generally <= 2; s SN, Teh, w edge DMoj"	"Delphinium hansenii subsp. kernense"
27	"Lower petal blade margin hairs 0; sepal spur tip generally down-curved > 3 mm; stem 25--100 cm --- CCo (c Monterey Co.)"	"Delphinium hutchinsoniae"
27	"Lower petal blade margin hairs present; sepal spur straight or tip down-curved < 3 mm; stem generally < 50 cm"	28
28	"Plant of mainland --- sepals generally dark royal blue (white or lavender)"	"Delphinium variegatum subsp. variegatum"
28	"Plant of ChI"	29
29	"Sepals white to light blue; flower Jan--Apr; plants on 0--15&deg; slopes"	"Delphinium variegatum subsp. kinkiense"
29	"Sepals bright blue; flower Feb--May; plants on 15--35&deg; slopes"	"Delphinium variegatum subsp. thornei"
30	"Blades of lower petals hairier adaxially than abaxially; proximal stem +- striate --- lateral sepals 7--16 mm; seeds winged; sepals not reflexed; pedicels ascending at < 45&deg; angle; NW, CaRF, ScV, SnFrB, SCoRI, PR"	31
30	"Blades of lower petals equally hairy adaxially, abaxially; proximal stem not striate"	33
31	"Lateral sepals <= 4 mm wide; c PR"	"Delphinium hesperium subsp. cuyamacae"
31	"Lateral sepals > 4 mm wide; n of TR"	32
32	"Sepals dark blue-purple"	"Delphinium hesperium subsp. hesperium"
32	"Sepals white to +- pink or light blue"	"Delphinium hesperium subsp. pallescens"
33	"Seed coat cell margins wavy, +- visible at 10&times; when held to light; fruit length generally <= 3 &times; width; sepals light blue to pink or white"	34
33	"Seed coat cell margins straight, +- visible at 10&times; when held to light; fruit length generally > 3&times; width; sepals blue to dark blue"	38
34	"Plant of grassland, open woodland; sepals white to +- pink or light blue, rarely reflexed; stem 30--150 cm"	"Delphinium gypsophilum"
34	"Plant of generally deserts, scrub, juniper woodland (grassland); sepals white to pink or light, +- sky, or dark blue, especially lateral generally reflexed (spreading to erect in <i>Delphinium parishii</i> subsp. <i>pallidum</i>, spreading in <i>Delphinium parishii</i> subsp. <i>subglobosum</i>); stem < 78(95) cm"	35
35	"Plant of fine, alkaline soil; sepals generally light blue; lower petals white --- GV, s SCoRI (Caliente Range), w DMoj"	"Delphinium recurvatum"
35	"Plant of generally coarse, not very alkaline soil; sepals white or pink to +- sky or dark blue; lower petals same color as sepals"	36
36	"Sepals +- sky blue, lateral reflexed --- s SNH, Teh, TR, SNE, D"	"Delphinium parishii subsp. parishii"
36	"Sepals white or pink or blue to dark blue, not sky blue, lateral not reflexed"	37
37	"Generally flower after 20 May; sepals white to pink or blue; sw SnJV, SCoRI, WTR"	"Delphinium parishii subsp. pallidum"
37	"Generally flower before 20 May; sepals dark blue; w DSon"	"Delphinium parishii subsp. subglobosum"
38	"Green leaves generally present on proximal 1/5 of stem in flower; proximal stem, petioles +- glabrous"	39
38	"Green leaves generally 0 on proximal 1/5 of stem in flower; proximal stem, petioles +- puberulent --- Teh, SnJV, CW, SW"	41
39	"In flower, basal leaves 4--10, cauline 1--4, lobes 3--5(9), shorter lobes 0.5--6 cm, lobe tips rounded --- DSon"	"Delphinium scaposum"
39	"In flower, basal leaves 0--3, cauline 3--7, lobes 3--30, longer lobes 2--6 cm, lobe tips tapered to point"	40
40	"Lobes of proximal leaves > 4 mm wide; lateral sepals reflexed; SCoRO, WTR"	"Delphinium umbraculorum"
40	"Lobes of proximal leaves < 4 mm wide; lateral sepals rarely reflexed; CaRH, ne SNH, GB"	"Delphinium andersonii"
41	"Basal leaves generally 0 in flower"	42
41	"Basal leaves generally present in flower"	43
42	"Lateral sepals generally 16--25 mm"	"Delphinium parryi subsp. blochmaniae"
42	"Lateral sepals 9--15 mm"	"Delphinium parryi subsp. parryi"
43	"Plant from > 700 m"	"Delphinium parryi subsp. purpureum"
43	"Plant from < 700 m"	44
44	"Sepals generally reflexed"	"Delphinium parryi subsp. eastwoodiae"
44	"Sepals generally spreading"	"Delphinium parryi subsp. maritimum"