1	"Leaves and phyllaries dotted or streaked with embedded, translucent oil glands --- herbage strongly scented"	2
1	"Leaves and phyllaries without embedded oil glands (sometimes glandular-hairy or gland-dotted)"	7
2	"Ray pale pink to bright pink-purple"	"Nicolletia {Nicolletia occidentalis}"
2	"Ray yellow to red"	3
3	"Phyllaries in 1 series"	4
3	"Phyllaries in +- 2 series --- pappus scales +- divided into 5--10 bristles"	5
4	"Phyllaries free, falling with ray fruits; disk pappus generally of bristles"	"Pectis {Pectis papposa var. papposa}"
4	"Phyllaries fused, persistent; disk pappus of scales"	Tagetes
5	"Annual; peduncles 1--5(10) mm"	"Dyssodia {Dyssodia papposa}"
5	"Subshrubs; peduncles 2--15 cm"	6
6	"Leaf toothed or divided into +- flat segments; involucre 10--18 mm"	Adenophyllum
6	"Leaf divided into stiff, needle-like segments; involucre 5--6 mm"	Thymophylla
7	"Ray white to pink or purple (occasionally multi-colored)"	8
7	"Ray yellow to red, sometimes multi-colored or fading to cream"	15
8	"Biennial or per"	9
8	Annual	10
9	"Leaf compound; pappus scales short"	"Tanacetum parthenium"
9	"Leaf simple; pappus scales long, bristle-like"	Townsendia
10	"Leaf wide, palmately lobed or toothed"	"Perityle emoryi"
10	"Leaf +- narrow, entire to fiddle-shaped or pinnately lobed"	11
11	"Plant puberulent or short-stiff-hairy"	12
11	"Plant tomentose"	13
12	"Plant generally prostrate; ray corollas 5--12 mm"	Monoptilon
12	"Plant erect; ray corollas < 2 mm"	"Rigiopappus {Rigiopappus leptocladus}"
13	"Ray 1.5--2.5 mm; pappus scales 2"	"Eatonella {Eatonella nivea}"
13	"Ray 3--30 mm; pappus scales 6--16"	14
14	"Phyllaries in 3--6+ series; ray (17)20--30 mm"	"Arctotis {Arctotis venusta}"
14	"Phyllaries in 1 series; ray 3--7 mm"	"Eriophyllum lanosum"
15	"Receptacle with stiff awn-like projections"	Gaillardia
15	"Receptacle smooth or pitted and/or minutely hairy, without stiff awn-like projections"	16
16	"Phyllaries in several series, strongly graduated"	17
16	"Phyllaries in 1--3(4) series, generally +- equal (sometimes outer longer), not strongly graduated"	22
17	"Leaf abaxially tomentose; stem creeping or decumbent to erect"	Arctotheca
17	"Leaf glabrous to short-hairy; stem erect or ascending (rarely decumbent)"	18
18	"Phyllary tips spreading to recurved; involucre gummy --- pappus of 2--6 slender deciduous awns"	Grindelia
18	"Phyllary tips +- appressed; involucre not or barely gummy"	19
19	"Annual; fruit winged; leaves toothed or lobed"	"Heteranthemis {Heteranthemis viscidihirta}"
19	"Perennial herb to shrub; fruit not winged; leaves entire"	20
20	"Body of head +- spheric; disk flowers 30--80"	"Acamptopappus shockleyi"
20	"Body of head narrower than length; disk flowers 1--13"	21
21	"Leaf elliptic to obovate; disk pappus scales twisted, bristle-like"	Amphipappus
21	"Leaf linear; disk pappus scales straight, wide, flat"	Gutierrezia
22	"Leaves basal"	23
22	"Leaves basal and cauline or all cauline"	25
23	"Head 3.5--8 cm diam; ray base generally dark-spotted; fruit hairs concealing pappus; sap milky"	"Gazania {Gazania linearis}"
23	"Head generally < 3 cm diam; ray base not dark-spotted; fruit hairs not concealing pappus; sap clear"	24
24	"Plant +- densely glandular-hairy"	"Hulsea vestita"
24	"Plant not glandular-hairy, often dotted with sessile resin glands"	"Tetraneuris {Tetraneuris acaulis var. arizonica}"
25	"Leaves generally opposite throughout (occasionally distal-most alternate)"	Lasthenia
25	"Leaves generally alternate (sometimes proximally opposite)"	26
26	"Old ray corolla papery, persistent on fruit when dry"	"Psilostrophe {Psilostrophe cooperi}"
26	"Old ray corolla withering, deciduous from fruit"	27
27	"Pappus of rigid, tapered awns; leaves linear, entire"	"Rigiopappus {Rigiopappus leptocladus}"
27	"Pappus of +- thin scales; leaves various, entire to lobed"	28
28	"Phyllaries in 2--3 generally +- equal series, sometimes outer phyllaries longer"	29
28	"Phyllaries in 1(2) series"	33
29	"Leaves mostly or all deeply linear-lobed or 1--3 &times; dissected"	30
29	"Leaves entire to shallowly lobed"	31
30	"Distal stem and involucres stalked-glandular; leaves 1--3 &times; pinnately dissected"	"Amauriopsis {Amauriopsis dissecta}"
30	"Distal stem and involucres not stalked-glandular, glands sessile or sunken; leaves entire or generally 1--2 &times; dissected into linear lobes"	Hymenoxys
31	"Pappus scales 4, in 2 unequal pairs; plant glandular-hairy"	Hulsea
31	"Pappus scales 5--8, equal or not; plant generally not glandular"	32
32	"Leaf narrowly linear, or if blade wider, base long-decurrent on stem; disk +- spheric; phyllaries generally +- reflexed"	Helenium
32	"Leaf not narrowly linear or decurrent; disk hemispheric; phyllaries generally spreading (or reflexed in age)"	"Hymenoxys hoopesii"
33	"Ray < 1 mm"	34
33	"Ray 1.5--10+ mm"	35
34	"Plant dotted with sessile resin glands; fruit 3--4-angled"	"Amblyopappus {Amblyopappus pusillus}"
34	"Plant densely woolly; fruit compressed"	"Monolopia congdonii"
35	"Disk fruit +- compressed; annual"	"Eatonella {Eatonella nivea}"
35	"Disk fruit (except sometimes outermost) +- cylindric, club-shaped, or 3--4-angled; annual to shrub"	36
36	"Subshrub; leaves 8--25 cm, distinctly petioled; pappus scales 2--6+, unequal or, if equal, scales 2, opposite"	"Constancea {Constancea nevinii}"
36	"Annual to shrub; leaves <= 8 cm, sessile or +- winged-petioled; pappus scales 0 or 6--12+, in 1--2 equal or unequal series"	Eriophyllum