1	"Seeds 3--200; calyx lobes generally +- alike"	2
1	"Seeds 1--4; calyx lobes +- not alike"	7
2	"Leaf blade 5--25 mm, +- round; stamens included; style cleft < 1/4; n W&I, n&e DMoj"	3
2	"Leaf blade 15--120 mm, lanceolate or oblong to widely ovate; stamens exserted; style cleft 1/3--3/4; NW, CaRH, SNH, MP"	4
3	"Corolla 12--15 mm; pedicels in fruit 10--30 mm, reflexed; fruit 2--2.5 mm"	"Phacelia perityloides var. jaegeri"
3	"Corolla 10--12 mm; pedicels in fruit 5--15 mm, ascending to spreading; fruit +- 4 mm"	"Phacelia perityloides var. perityloides"
4	"Corolla persistent in fruit; nectary gland present; seed pits in longitudinal rows"	"Phacelia sericea var. ciliosa"
4	"Corolla deciduous; nectary gland 0; seed pits not in longitudinal rows"	5
5	"Inflorescence head-like, dense; stamens glabrous; plant 10--30 cm"	"Phacelia hydrophylloides"
5	"Inflorescence panicle-like, generally +- open proximally; stamens hairy; plants generally > 30 cm"	6
6	"Corolla 10--12 mm, pale blue to purple; seeds 30--60"	"Phacelia bolanderi"
6	"Corolla 3--7 mm, cream to green or brown-white; seeds 12--16"	"Phacelia procera"
7	"Leaves cauline, compound; leaflets coarsely toothed or lobed"	"Phacelia ramosissima"
7	"Leaves mostly basal, generally simple (or basal lobed to compound); leaflets entire or generally 0"	8
8	"Basal leaves simple, entire or 2--7-lobed"	9
8	"Basal leaves generally dissected or compound, segments or leaflets 3--15"	13
9	"Stem densely glandular; leaves generally +- green (+- gray)"	"Phacelia corymbosa"
9	"Stem generally not or sparsely glandular; leaves generally silvery to +- white or +- gray or +- green"	10
10	"Basal leaves generally ovate to obovate to +- round; coastal dunes, coastal foothills, or coastal mtns, < 1000 m"	11
10	"Basal leaves generally lanceolate to widely elliptic; inland mtns, 380--4000 m"	12
11	"Lobes of basal leaves 0(2); corolla white to cream; coastal dunes, n NCo, < 20 m"	"Phacelia argentea"
11	"Lobes of basal leaves generally 2--7; corolla blue to purple (white); coastal bluffs, woodland, chaparral, rocky slopes, s NCo, NCoRO, CCo, SnFrB, < 1000 m"	"Phacelia californica"
12	"Stem decumbent to ascending, 5--20(30) cm; hairs generally spreading; calyx lobes generally glandular"	"Phacelia hastata var. compacta"
12	"Stem ascending to +- erect, 20--50 cm; hairs generally +- appressed; calyx lobes generally not glandular"	"Phacelia hastata var. hastata"
13	"Stem sparsely stiff-hairy; veins of basal leaves generally not prominent"	"Phacelia mutabilis"
13	"Stem densely stiff-hairy; veins of basal leaves generally prominent"	14
14	"Biennial or weak perennial herb; central stem erect, generally 1"	"Phacelia heterophylla var. virgata"
14	"Perennial herb; central stems generally decumbent to ascending, generally > 1"	15
15	"Calyx lobes lanceolate to narrowly ovate to obovate, +- overlapping in fruit; corolla narrowly campanulate"	16
15	"Calyx lobes linear to narrowly ovate or oblanceolate, not overlapping in fruit; corolla campanulate"	18
16	"Segments of basal leaves 3--7; outer calyx lobes lanceolate, not glandular"	"Phacelia imbricata var. patula"
16	"Segments of basal leaves 7--15; outer calyx lobes narrowly ovate to ovate to obovate, generally glandular"	17
17	"Corolla lobes erect to +- divergent; inflorescence dense, spike-like"	"Phacelia imbricata var. bernardina"
17	"Corolla lobes erect to incurved; inflorescence open, panicle-like"	"Phacelia imbricata var. imbricata"
18	"Corolla white to cream, 5--9 mm, limb 4--8 mm diam; stamens 9--14 mm; calyx lobes 8--12 mm in fruit"	"Phacelia egena"
18	"Corolla blue to purple (white) or green- or yellow-white, 3.5--7 mm, limb 3--6 mm diam; stamens 7--10 mm; calyx lobes 5--8 mm in fruit"	19
19	"Style 8--12 mm; corolla blue to purple (white)"	"Phacelia californica"
19	"Style 6--9 mm; corolla green- or yellow-white"	20
20	"Mid-stem generally < 7 mm diam; corolla 3.5--5 mm; seed 1.5--2 mm"	"Phacelia nemoralis var. nemoralis"
20	"Mid-stem generally 7--10 mm diam; corolla 5--6 mm; seed 2--2.5 mm"	"Phacelia nemoralis var. oregonensis"