1	"Annual 0.1--1.5(3) dm"	2
1	"Generally perennial herb to shrub, occasionally flowering 1st year, 1--15 dm"	10
2	"Peduncle < 1 cm"	3
2	"Peduncle >= 1 cm"	5
3	"Heads radiate"	"Eriophyllum multicaule"
3	"Heads discoid"	4
4	"Leaf weakly rolled under, tip sharp-pointed; phyllaries 3--4"	"Eriophyllum mohavense"
4	"Leaf margins strongly rolled under, tip rounded; phyllaries 6--8"	"Eriophyllum pringlei"
5	"Anther tip awl-like; disk corolla lobes glandular; ray white to yellow"	6
5	"Anther tip deltate; disk corolla lobes glandless; ray yellow"	7
6	"Pappus of alternating long and short scales; fruit 2.5--4.5 mm; ray white"	"Eriophyllum lanosum"
6	"Pappus 0 or of +- = scales; fruit +- 2 mm; ray yellow, occasionally cream-white"	"Eriophyllum wallacei"
7	"Pappus 0 or of minute scales; anther tip glabrous; s SNF, Teh, SNE, D"	8
7	"Pappus of scales >= 0.5 mm; anther tip glandular; c SN (Mariposa Co.)"	9
8	"Disk corolla lobes glabrous; pappus of 6--10 irregularly toothed scales 0.2--0.5 mm"	"Eriophyllum ambiguum var. ambiguum"
8	"Disk corolla lobes with 1-celled hairs; pappus 0 or scales entire, 0.1--0.2 mm"	"Eriophyllum ambiguum var. paleaceum"
9	"Branches open, spreading; ray 3--5 mm; 500--1900 m"	"Eriophyllum congdonii"
9	"Branches strictly ascending; ray +- 1 mm; 1800--2500 m"	"Eriophyllum nubigenum"
10	"Subshrub or shrub; heads 1--30+; peduncle 0--10(14) cm; ray 2--10 mm"	11
10	"Annual to subshrub, woody at base only; heads 1--5(10); peduncle (1)3--30 cm; ray 6--20 mm"	14
11	"Subshrub 3--15 dm; phyllaries 8--11; ray flowers (0)6--9; ray 3--5 mm; coastal dunes, bluffs, canyons"	"Eriophyllum staechadifolium"
11	"Subshrub or shrub, 2--10 dm; phyllaries 4--8; ray flowers (0)4--8, ray 2--10 mm; generally non-coastal"	12
12	"Heads 1--5; peduncle 5--10(14) cm; ray flowers 5--8, ray 6--10 mm --- SnFrB, SCoRI"	"Eriophyllum jepsonii"
12	"Heads 3--30+; peduncle 0--2.5(9) cm; ray flowers (0)4--6(8), ray 2--5 mm"	13
13	"Heads 10--30+; peduncle 0--1(2) cm; involucre 3--5 mm diam; disk corolla 2--3 mm"	"Eriophyllum confertiflorum var. confertiflorum"
13	"Heads 3--10; peduncle 0.5--2.5(9) cm; involucre 5--7 mm diam; disk corolla 3.5--4 mm"	"Eriophyllum confertiflorum var. tanacetiflorum"
14	"Involucre 5--6(7) mm diam; peduncle 1--8 cm; ray flowers 6--8(13), ray generally 6--10 mm; rare; c-w SnFrB (San Mateo Co.)"	"Eriophyllum latilobum"
14	"Involucre 6--15 mm diam; peduncle 3--30 cm; ray flowers (0)5--13(15), ray 6--20 mm; not rare; widespread complex"	15
15	"Tube of disk flower glabrous; rare, s Teh, se SCoRO"	"Eriophyllum lanatum var. hallii"
15	"Tube of disk flower very glandular or hairy; widespread"	16
16	"Ray flowers generally 8(5--10); phyllaries generally 8(5--10), strongly keeled; leaves entire or 3-(5-)lobed, margins flat"	"Eriophyllum lanatum var. integrifolium"
16	"Ray flowers generally 9--13; phyllaries 9--15, keeled to flat; leaves entire to nearly compound, margins flat or rolled under"	17
17	"Leaves densely woolly on faces, entire or coarsely toothed (especially distal to middle), margins flat"	18
17	"Leaves less hairy, (often green) adaxially, entire to nearly compound, margins rolled under"	19
18	"Ray 7--10 mm; KR, NCoRH"	"Eriophyllum lanatum var. lanceolatum"
18	"Ray 6--7 mm; s SNH, SnBr"	"Eriophyllum lanatum var. obovatum"
19	"Leaves linear to ovate, entire to 2-compound, often woolly-tufted adaxially; pappus 0.5--1.5 mm; peduncle 3--30 cm; ray yellow"	20
19	"Leaves narrowly oblanceolate or wider, serrate to sharply lobed, glabrous adaxially; pappus 0 or minute; peduncle 3--10 cm; ray golden yellow"	21
20	"Leaves 1--3 cm, lobed to +- 2-pinnately compound; peduncle 3--10 cm, generally slender; involucre 6--8 mm; ray 6--9 mm"	"Eriophyllum lanatum var. achilleoides"
20	"Leaves 3--8 cm, entire to pinnately lobed; peduncle 10--30 cm, generally swollen proximal to heads; involucre 8--10 mm; ray 10--20 mm"	"Eriophyllum lanatum var. grandiflorum"
21	"Leaves +- diamond-shaped, proximal sharply 3--5 lobed, woolly-tufted abaxially; coastal"	"Eriophyllum lanatum var. arachnoideum"
21	"Leaves oblanceolate to obovate, coarsely serrate or lobed distally, silky-woolly abaxially; SNH"	"Eriophyllum lanatum var. croceum"