1	"Corollas, or at least some, persistent, withering in fruit, +- enclosing fruit"	2
1	"Corolla deciduous in fruit"	8
2	"Seeds 1--4; stamens 3--7 mm, exserted; SN"	3
2	"Seeds generally 5--50; stamens 1--5 mm, included; SNE, n DMoj"	5
3	"Fruit +- spheric, not compressed; calyx lobes 4--7 mm in fruit; seeds 2--4; leaves simple, lobes 0"	"Phacelia quickii"
3	"Fruit ellipsoid to ovoid, +- compressed; calyx lobes 3--4 mm in fruit; seeds 1--2; leaves generally simple, lobes 0--6"	4
4	"Corolla violet to purple; seeds (1)2; calyx lobes +- not alike"	"Phacelia marcescens"
4	"Corolla white to pale blue; seeds generally 1; calyx lobes +- alike"	"Phacelia stebbinsii"
5	"Seeds 20--50, pitted; calyx lobes +- not alike"	"Phacelia saxicola"
5	"Seeds 5--25, cross-furrowed; calyx lobes generally alike"	6
6	"Corolla puberulent inside; stamens puberulent"	"Phacelia monoensis"
6	"Corolla glabrous inside; stamens glabrous"	7
7	"Sepals, petals generally 5; corolla 2--3 mm"	"Phacelia inyoensis"
7	"Sepals, petals generally 4; corolla 1.3--2 mm"	"Phacelia tetramera"
8	"Seeds 1--4"	9
8	"Seeds generally >= 5 (occasionally fewer due to abortion)"	23
9	"Cauline leaf blade generally as long as wide; leaves, stems, and calyx lobes long-stiff-hairy, hairs bulb-based"	10
9	"Cauline leaf blade generally longer than wide; leaves, stems, and calyx lobes not long-stiff-hairy, hairs not bulb-based"	11
10	"Corolla 5--7 mm; stamens 5--10 mm; seeds generally 4"	"Phacelia malvifolia var. malvifolia"
10	"Corolla 3--5 mm; stamens 2--3 mm; seeds generally 2"	"Phacelia rattanii"
11	"Leaf crenate to lobed, lobes generally crenate or +- toothed; seed adaxially with central ridge separating 2 longitudinal grooves"	12
11	"Leaf entire or lobed, lobes generally entire or few-toothed; seed adaxially not ridged and grooved"	16
12	"Corolla 3--7 mm; stamens, style 2--5 mm"	13
12	"Corolla 4--10 mm; stamens 10--15 mm, style 12--15 mm"	14
13	"Corolla 5--7 mm, widely bell-shaped; stamens, style 3--5 mm; seeds 2.5--3.5 mm; fruit ovoid"	"Phacelia anelsonii"
13	"Corolla 3--5 mm, bell-shaped; stamens, style 2--3 mm; seeds 2--3 mm; fruit spheric"	"Phacelia coerulea"
14	"Corolla +- 4 mm; stamens, style exserted < 2 mm"	"Phacelia crenulata var. minutiflora"
14	"Corolla >= 4.5 mm; stamens, style exserted >= 3.5 mm"	15
15	"Stem glandular distally; corolla 5--10 mm; stamens unequal; style exserted >= 9 mm; seed margin entire"	"Phacelia crenulata var. ambigua"
15	"Stem generally glandular throughout; corolla 4.5--7 mm; stamens equal; style exserted 3.5--11 mm; seed margin corrugated"	"Phacelia crenulata var. crenulata"
16	"Stamens short-hairy"	17
16	"Stamens glabrous"	18
17	"Calyx lobes 8--12 mm in fruit; stamens 6--8 mm, clearly exserted"	"Phacelia humilis var. dudleyi"
17	"Calyx lobes 5--8 mm in fruit; stamens 4--6 mm, +- exserted"	"Phacelia humilis var. humilis"
18	"Corolla narrowly bell-shaped, 2--4 mm, scales yellow"	"Phacelia racemosa"
18	"Corolla widely bell-shaped or rotate, 3--6 mm, scales not yellow"	19
19	"Stem wiry; corolla rotate, lobes violet to purple"	"Phacelia greenei"
19	"Stem not wiry; corolla widely bell-shaped, lobes blue to lavender"	20
20	"Corolla pale blue to blue; fruit compressed"	"Phacelia breweri"
20	"Corolla pale lavender to lavender; fruit not compressed"	21
21	"Style cleft +- to base; calyx lobes subequal to equal, alike"	"Phacelia eisenii"
21	"Style cleft generally 1/3--1/2, calyx lobes unequal, not alike, especially in fruit"	22
22	"Calyx lobes in fruit 4--6 mm, short-stiff-hairy, cilia < 1 mm"	"Phacelia austromontana"
22	"Calyx lobes in fruit 8--10 mm, puberulent, cilia < to > 1 mm"	"Phacelia novenmillensis"
23	"Leaf blades, especially proximal, generally as wide as long"	24
23	"Leaf blades generally longer than wide"	41
24	"Corolla 7--40 mm; stamens (4)10--45 mm; style (3)8--45 mm"	25
24	"Corolla 3--12 mm; stamens 2--10 mm; style 1--12 mm"	33
25	"Stamen bases with 0 wings"	26
25	"Stamen bases with 2 wings"	28
26	"Cymes dense; plants 30--200 cm; some basal leaves not deeply lobed; corolla limb 25--40 mm diam"	"Phacelia grandiflora"
26	"Cymes open; plants 10--100 cm; some basal leaves deeply lobed; corolla limb 10--25 mm diam"	27
27	"Corolla rotate to bell-shaped, white, limb 10--15 mm diam; style included, 3--10 mm --- Santa Barbara, Ventura cos."	"Phacelia viscida var. albiflora"
27	"Corolla rotate, throat white, limb 15--25 mm diam, pale lavender to bright blue; style included or exserted, 5--16 mm"	"Phacelia viscida var. viscida"
28	"Stamen base wings hairy; corolla purple (white) throughout or with white spot at base of each lobe"	29
28	"Stamen base wings glabrous; corolla white or pink to bright blue throughout or with markings at base of sinuses"	30
29	"Corolla purple (white) throughout, +- bell-shaped with slight constriction at throat, tube length > limb width"	"Phacelia minor"
29	"Corolla purple with white spot at base of each lobe, shallow-rotate to widely bell-shaped, tube length < limb width"	"Phacelia parryi"
30	"Seeds 10--24; corolla 7--12 mm, white to pale magenta or pale blue, occasionally with diffuse area lacking pigment at base of sinuses"	"Phacelia longipes"
30	"Seeds >= 40; corolla 6--40 mm, deep to sky blue with white spots at base of sinuses"	31
31	"Style cleft generally 2/3--3/4; s SNH, Teh (e slope), w edge DMoj"	"Phacelia nashiana"
31	"Style cleft generally 1/4--1/2; DMoj, n&w DSon"	32
32	"Corolla rotate, generally < 25 mm, length <= width; w DSon"	"Phacelia campanularia var. campanularia"
32	"Corolla funnel-shaped, generally > 25 mm, length >= width; DMoj, n DSon"	"Phacelia campanularia var. vasiformis"
33	"Leaves, stems, calyx lobes long-stiff-hairy, hairs bulb-based; fruit 2--3 mm"	"Phacelia malvifolia var. loasifolia"
33	"Leaves, stems, calyx lobes short-stiff-hairy, hairs not bulb-based; fruit 3--7 mm"	34
34	"Seeds not pitted, cross-furrows 4--8; calyx lobes 1.5--3 mm, 2--5 mm in fruit; fruit generally spheric"	35
34	"Seeds pitted, cross-furrows 0; calyx lobes 2--5 mm, 4--9 mm in fruit; fruit ovoid to +- oblong"	37
35	"Corolla 8--12 mm; stamens 5--6 mm; style 5--6 mm"	"Phacelia calthifolia"
35	"Corolla 4--7 mm; stamens 2--4 mm; style 2--3 mm"	36
36	"Corolla cream-white; inflorescence axis among leaves, glands not dark"	"Phacelia neglecta"
36	"Corolla violet to purple; inflorescence axis generally exceeding leaves, glands +- dark"	"Phacelia pachyphylla"
37	"Corolla 6--12 mm; style 3--5 mm"	38
37	"Corolla 3--6 mm; style 1--2 mm"	39
38	"Corolla narrowly bell-shaped, limb generally 3--5 mm diam"	"Phacelia mustelina"
38	"Corolla widely bell-shaped, limb generally > 5 mm diam"	"Phacelia pulchella var. gooddingii"
39	"Leaf blade widely elliptic to obovate, base tapered, margin entire to +- toothed; calyx lobes not alike"	"Phacelia parishii"
39	"Leaf blade +- round, base truncate to +- lobed, margin clearly toothed; calyx lobes generally alike"	40
40	"Calyx lobes 6--8 mm in fruit, some 1--2 mm wide; leaf blade crenate to irregularly toothed"	"Phacelia peirsoniana"
40	"Calyx lobes 4--6 mm in fruit, generally < 1 mm wide; leaf blade dentate to weakly lobed, lobes obtuse"	"Phacelia rotundifolia"
41	"Stem prostrate to +- ascending; corolla 1--2 mm; inflorescence axillary, partly hidden by leaves"	"Phacelia cookei"
41	"Stem generally ascending to erect; corolla >= 2 mm; inflorescence generally terminal, not hidden by leaves"	42
42	"Seeds 20--80+"	43
42	"Seeds <= 20"	44
43	"Leaves cauline, gradually reduced distally on stem; blade toothed to +- lobed"	"Phacelia lemmonii"
43	"Leaves +- basal, +- abruptly reduced distally on stem; blade entire to +- toothed"	"Phacelia parishii"
44	"Proximal pedicels > distal (especially in fruit), generally S-shaped or recurved in fruit"	45
44	"Proximal pedicels generally = distal, generally straight in fruit"	49
45	"Fruit obovoid, +- flattened; corolla lavender to violet; NCo, CCo, n ChI"	46
45	"Fruit ovoid, swollen at base; corolla tube white to +- yellow, lobes blue to violet; SN, TR, PR, SNE, DMoj"	47
46	"Stem generally decumbent to ascending; style 2.5--4 mm; seed 1.5--2 mm; NCo, CCo"	"Phacelia insularis var. continentis"
46	"Stem generally erect; style 5--6 mm; seed 1--1.5 mm; n ChI"	"Phacelia insularis var. insularis"
47	"Proximal pedicels 2--8 mm in fruit; fruit 2.5--3.5 mm"	"Phacelia orogenes"
47	"Proximal pedicels 5--25 mm in fruit; fruit 4--7 mm"	48
48	"Corolla 4--8 mm; style 2--4 mm"	"Phacelia curvipes"
48	"Corolla 7--15 mm; style 4--8 mm"	"Phacelia davidsonii"
49	"Leaf linear, oblong, or narrowly (ob)lanceolate, tapered to indistinct petiole"	50
49	"Leaf elliptic or lanceolate to ovate, clearly petioled"	54
50	"Calyx lobes 1--3 mm, 2--8 mm in fruit; corolla 2--6 mm; stamens, style 2--5 mm"	51
50	"Calyx lobes 3--5 mm, 5--15 mm in fruit; corolla 5--10 mm; stamens, style 5--14 mm"	52
51	"Corolla 2--3 mm; stamens, style +- 2 mm; style glabrous; KR"	"Phacelia leonis"
51	"Corolla 3--6 mm; stamens, style 3--5 mm; style puberulent; KR, CaRH"	"Phacelia pringlei"
52	"Pedicels < 2 mm in fruit; calyx lobes +- alike; fruit 5--8 mm; ne California"	"Phacelia linearis"
52	"Pedicels generally 2--5 mm in fruit; calyx lobes not alike, especially in fruit; fruit 3--5 mm; s CA"	53
53	"Stamens included or +- exserted, subequal, 5--9 mm, filaments generally white; corolla tube base white to lavender, lobes +- spreading, lavender"	"Phacelia exilis"
53	"Stamens exserted, unequal, 5--14 mm, filaments violet; corolla tube base generally yellow, lobes +- erect, white, aging pale blue"	"Phacelia mohavensis"
54	"Seeds not pitted, cross-furrows 7--9"	"Phacelia gymnoclada"
54	"Seeds pitted, cross-furrows 0"	55
55	"Corolla 6--15 mm"	56
55	"Corolla 3--8 mm"	59
56	"Leaf blade toothed to +- lobed; calyx lobes short-hairy, not clearly ciliate; corolla tube yellow, lobes lavender to purple"	57
56	"Leaf blade entire or few-lobed near base; calyx lobes puberulent to short-hairy, clearly stiff-ciliate; corolla lavender to violet"	58
57	"Corolla 9--14 mm; seeds 8--10; nw PR"	"Phacelia keckii"
57	"Corolla 7--11 mm; seeds 10--16; NCoRI, c SNF, CW"	"Phacelia suaveolens"
58	"Corolla 6--10 mm; stamens 3--5 mm; styles 3--5.5 mm"	"Phacelia congdonii"
58	"Corolla 10--15 mm; stamens 8--10 mm; styles 6--10 mm"	"Phacelia divaricata"
59	"Stamens 7--8 mm; style 5--9 mm"	60
59	"Stamens 2--4 mm; style 1--4 mm"	61
60	"Stems short- to long-stiff-hairy, many hairs > 1 mm; corolla generally white; SCoRO, WTR"	"Phacelia grisea"
60	"Stems puberulent to short-stiff-hairy, hairs generally < 1 mm; corolla lavender to violet; s CaRH, SN, MP"	"Phacelia purpusii"
61	"Calyx lobes 4--6 mm in fruit, cilia < 1 mm; inflorescence open proximally; W&I, ne DMtns (Clark Mtn Range)"	"Phacelia barnebyana"
61	"Calyx lobes 7--11 mm in fruit, cilia generally > 1 mm; inflorescence dense; s CaR, n&c SN, e SnFrB, SCoRI"	62
62	"Corolla white to light lavender, lobes violet-streaked; leaf veins not impressed; fruit not beaked; calyx lobes +- alike; e SnFrB, SCoRI"	"Phacelia phacelioides"
62	"Corolla tube white to lavender, lobes generally purple; leaf veins impressed; fruit beaked; calyx lobes not alike; s CaR, n&c SN"	"Phacelia vallicola"