1	"Involucres at tips of slender branchlets, not appressed; peduncles present or 0"	2
1	"Involucres not at tips of slender branchlets, generally appressed; peduncles 0"	11
2	"Flowers 0.7--1.5 mm, yellow or cream; n SNE, w DMoj"	3
2	"Flowers 1--2.5(3) mm, yellow or white to pink, rose, or red"	4
3	"Flowers cream to +- red, 1--1.5 mm; inflorescence 5--10(15) cm wide; n SNE"	"Eriogonum ampullaceum"
3	"Flowers yellow, 0.7--1 mm; inflorescence 5--20 cm wide; w DMoj"	"Eriogonum mohavense"
4	"Stem glabrous; involucres sessile"	5
4	"Stem tomentose, if glabrous then involucres peduncled at lower nodes"	7
5	"Basal leaf blades oblong-ovate; involucres 3--4 mm, 5-toothed; c NCoRI, n CCo, n SnFrB"	"Eriogonum luteolum var. caninum"
5	"Basal leaf blades generally round to reniform; involucres 2--4 mm, 5--8-toothed; c&s CW, WTR"	6
6	"Involucres 2--2.5 mm, 5-toothed; flowers 2--2.5(3) mm, minutely puberulent, white to rose or yellow in fruit; c&s CW, WTR"	"Eriogonum covilleanum"
6	"Involucres 3--4 mm, 6--8-toothed; flowers 1--2 mm, glabrous, white to rose; n SCoR"	"Eriogonum nortonii"
7	"Involucres glabrous; s SnFrB, n SCoRI"	"Eriogonum argillosum"
7	"Involucres tomentose; ScV, ne SnFrB, ne&s SCoRI"	8
8	"Leaves basal, blades +- round; styles 0.1--0.3 mm; s SCoRI"	"Eriogonum eastwoodianum"
8	"Leaves basal or basal and cauline, +- round or narrowly oblong to ovate; styles 0.2--1 mm; ne SnFrB, SCoRI"	9
9	"Involucres 2.5--3.5(4) mm; styles 0.2--0.3 mm; ScV (extirpated), ne SnFrB"	"Eriogonum truncatum"
9	"Involucres (1.5)1.8--2.5 mm; styles 0.2--1 mm; SCoRI"	10
10	"Flowers smooth; involucres 2--2.5 mm; leaves basal and subbasal, rarely cauline; s SCoRI"	"Eriogonum temblorense"
10	"Flowers papillate; involucres (1.5)1.8--2 mm; leaves basal and cauline; ne SCoRI"	"Eriogonum vestitum"
11	"Flowers hairy, white to rose --- c&s NCoR"	"Eriogonum dasyanthemum"
11	"Flowers glabrous or sparsely glandular, white, cream, yellow, rose, or red"	12
12	"Involucres 1--2 mm, if 2 mm then outer perianth lobes fan-shaped or +- hastate (except oblong to oblong-ovate in <i>Eriogonum baileyi</i>)"	13
12	"Involucres (1.8)2--5(7) mm; outer perianth lobes not fan-shaped or hastate (see also <i>Eriogonum baileyi</i> at 12.)"	20
13	"Stems glabrous, if tomentose then flowers glandular and plant of e SN, GB; outer perianth lobes oblong to oblong-obovate"	14
13	"Stems tomentose to sparsely so; outer perianth lobes narrowly to widely fan-shaped or +- hastate"	17
14	"Flowers yellow or pale +- yellow (or +- white), 0.6--0.8(1) mm; SNE, DMoj"	"Eriogonum brachyanthum"
14	"Flowers white to rose, 1--2 mm; SNF, Teh, SnFrB, s SCoR, TR, GB, w DMoj"	15
15	"Flowers 1--1.5 mm, glabrous or puberulent; stem, inflorescence glabrous --- SnFrB, SCoR, WTR"	"Eriogonum elegans"
15	"Flowers 1.5--3 mm, generally minutely glandular, occasionally glabrous in SNF; stem, inflorescence glabrous or tomentose"	16
16	"Inflorescence glabrous; SNF, Teh, s SCoR, TR, GB, w DMoj"	"Eriogonum baileyi var. baileyi"
16	"Inflorescence tomentose; GB"	"Eriogonum baileyi var. praebens"
17	"Outer perianth lobes +- hastate in fruit; flowers 0.8--1.2 mm; involucres bell-shaped, 1--2 mm; SnBr, PR"	"Eriogonum evanidum"
17	"Outer perianth lobes fan-shaped; flowers 1--3.5 mm; involucres bell-shaped to obconic, 1--2.5 mm; GB, D"	18
18	"Leaves cauline; leaf blades narrowly oblanceolate to widely elliptic; plant narrowly erect; flowers white to pink or red; se DMoj"	"Eriogonum polycladon"
18	"Leaves basal; leaf blades +- round to cordate; plant generally spreading; flowers white to pink or pale yellow to yellow; GB, D"	19
19	"Flowers pale yellow or yellow to red; outer perianth lobes widely fan-shaped; inflorescence generally densely branched, branches incurved; fruit 1--1.3 mm; GB, D"	"Eriogonum nidularium"
19	"Flowers white to pink or pale yellow, outer perianth lobes narrowly fan-shaped; inflorescence generally sparsely branched, branches not incurved; fruit 1.5--1.8 mm; SNE, D"	"Eriogonum palmerianum"
20	"Leaf blades oblong-obovate to oblanceolate or oblong (basal occasionally +- rounded in <i>E. cithariforme</i>)"	21
20	"Leaf blades round-ovate to rounded or reniform, if not then stem and inflorescence branches glabrous and plant of SNH; stem, inflorescence branches glabrous to tomentose"	25
21	"Involucres (3.5)4--5 mm; outer perianth lobes narrowly obovate to oblong; fruit 1.8--2(2.2) mm; NW, SNF, Teh, CW, TR"	"Eriogonum roseum"
21	"Involucres (1.8)2--3 mm; outer perianth lobes lanceolate to oblong or oblong-obovate; fruit 1--2 mm; CA-FP"	22
22	"Inflorescence branches upcurved; basal leaf blades oblanceolate or elliptic to ovate or +- rounded, (0.3)1--2 cm; petiole generally winged; involucres 2.5--3 mm; flowers 1.5--2 mm, white to rose; SCoR, TR"	23
22	"Inflorescence branches straight; basal leaf blades oblanceolate to oblong, (0.8)1--4(6) cm; petiole not winged; involucres (1.8)2--3 mm; flowers 1.5--3 mm, white to pink or yellow; CA-FP"	24
23	"Stem, inflorescence glabrous; SCoR, WTR"	"Eriogonum cithariforme var. agninum"
23	"Stem, inflorescence tomentose; SCoR, TR"	"Eriogonum cithariforme var. cithariforme"
24	"Inflorescence densely to sparsely tomentose; widespread"	"Eriogonum gracile var. gracile"
24	"Inflorescence glabrous; PR"	"Eriogonum gracile var. incultum"
25	"Inflorescence sparsely tomentose, especially basally, or glabrous; leaves basal; flowers white to rose or pale yellow --- ne KR, CaR, n SNH, MP"	"Eriogonum vimineum"
25	"Inflorescence tomentose or generally glabrous, if sparsely tomentose then leaves basal and cauline; flowers white to pink, red or yellow"	26
26	"Involucres (3.5)4--5(7) mm; plant 4--10 dm; n WTR, SnBr, PR"	"Eriogonum molestum"
26	"Involucres 2--4 mm; plant 1--5 dm; widespread"	27
27	"Leaves basal; involucres 3--4 mm; flowers 1.5--2 mm; stem glabrous; SW, SNE, DMoj"	"Eriogonum davidsonii"
27	"Leaves basal and cauline, involucres 3--3.5 mm and flowers 1.5--2 mm with sparsely tomentose stem and inflorescence, if leaves only basal and stem glabrous then involucres 2--3.5 mm and plant of n&c SN; n CA-FP"	28
28	"Involucres 2--3 mm; flowers 2--2.5 mm; plant of granitic sand; n&c SNH"	"Eriogonum luteolum var. saltuarium"
28	"Involucres 3--3.5 mm; flowers 1--2 mm; plant of serpentine; NW, CaR, SNF, SnFrB"	29
29	"Flowers 1.8--2 mm; NW, CaR, SnFrB"	"Eriogonum luteolum var. luteolum"
29	"Flowers 1--1.5(1.8) mm; SNF"	"Eriogonum luteolum var. pedunculatum"