98 COMPOSITAE 
he a oe 6-7( vide mm. long, glabrous or sparsely bristly, the seeds about 0.5 mm. long, 
ing, light bro 
i d canyons and seb asks: Upper ig ganic arene Cal a Coast Ranges, Montere 
y County to San 
Diego County. south to Lower California, where it occurs and Pasi with the typical species in the Sierfa Juarez 
and Sierra San Pedro Martir. Type locality : cater of Ojai Creek, Ventura County, California. Collected by 
Rothrock. June—Nov 
Family 149. COMPOSITAE. 
SUNFLOWER FAMILY. 
nnual or perennial herbs, subshrubs, or shrubs, sometimes scandent. Leaves 
dissected. Flowers usually many, borne in a head* (rarely with 1 flower only) on the 
enlarged summit of the meta (receptacle), surrounded by an La age 2 fies 
modified bracts (phyllaries), these in 1 to several series and often im Heads 
enna or in an inflorescence of several to many heads. Flowers of ae heads epigy- 
ous, gamopetalous, with or without subtending bracts Se bracts), all 
fieuilate with strap-shaped corollas, or all discoid with tubular or expanding, equally 
toothed or lobed corollas (homogamous), or the ligulate and aise corollas Aitaed 
in 1 head (heterogamous), the ligulate marginal and called rays, or the corollas rarely 
lacking ; flowers hermaphrodite eee onally perfect), hoeqeaen pistillate, or neutral 
with vestigial parts. Stamens 5, the anthers united into a tube (rarely distinct or 
at base, sometimes appendaged above. Style 1, usually with 2 branches, these bearing 
a stigmatic surface and often appendaged ; Esinuct salty staminate flowers often with 
an undivided style. Fruit an achene, with or without a pappus of scales, teeth, awns, 
or bristles 
A faniily of cosmopolitan distribution, probably the largest family of plants with 900 or more genera and over 
15,000 species. 
By to the Tribes of the Composita 
(The ch t din this key apply to the species in sh Pacific States) 
Corollas of the heads all with 3-toothed marginal ligules (rays) and the remainder tubular, or all flowers of the 
heads tubular —_ Hig ed toothed or divided, or all flowers completely or in part bilabiate; herbage with- 
out latex (except 146, Gazsania). 
All agp 25 8 sevely ii i cther eeae oes regularly cleft, with the lobes linear or nearly so, commonly one- 
t t 
sain? hilaiate Pei 149, Hecastocleis, with 1 flower in oe involucre); styles not thickened nor 
of hairs below the truncate style-branches. Tribe 11. MUTISEAE (genera 147-149, 
Cobol regularly e's ogg Cc ihe in spp. irregular ana eal radiate); styles thickened below or 
with a ring o s below a le-branches, these in the perfect flowers short-branched in rela- 
tion to the feet “of A sccieh od 
gis is at lea e phyllaries aioe Saussurea, and some spp. of Centaurea with fringed 
fyllaries), sprit or spiny; saat long- fimbrillose or betase (except 139, Onopordum). 
tie 9. AREAE (genera 135-145, p. 506). 
Herbage (in — not at all prickly or spiny; phyllaries fused basally; receptacle naked; garden 
ruderal. Tribe 10. ARCTOTIDEAE (genus 146, Gazania, p. 548). 
Disk-corollas Sy toothed or short-lobed, the lobes not markedly narrow, if rather long not associated with 
short-lobed style- craic 
Anthers distinct or nearly so; pistillate corollas st or rudimentary; monoecious, with the ig se TO 
be ee Paitory on se inflorescence in genera 22-25. Subtribe AMBROSIINAE, Tribe 1. 
NTHEAE (genera 19-25, p. 140). 
caw jean into a tube; pistillate figs present; heads either homogamous or heterogamous (dioe- 
cious in 94, apse 
Receptacle with long (at 
least equaling the achenes) chaffy, hyaline or so pe mr bristle -like bracts 
a all ne + saint of the heads or only those either toward the 
tacle rd it 
gin of the recep- 
Heads share abes ora at base; woolly, mostly dwarfed annuals with phyllaries and 
are aes receptacular bracts often much modified. Tribe 7. INULEAE, in part (genera 
, p. 465). 
“ 
Heads radiate, SA the rays er aia inconspicuous; anthers sagittate or rounded at base; per- 
ials or shrubs, or if annuals not densely woolly and dwarfed. 
Style: branches truncate or penicillate; phyllaries with 
Tri . ANTHEMIDEAE, in part (genera 95-97, p 
Style- branches Ros gg the appendages hairy on both en asia without wide scari- 
eage scarious or hyaline margins. 
R aa throughout; receptacular bracts long, folded about the achene (either 
ccentacle ch or afty tek in 11, Eclipta; 12, Bidens; 13, Coreopsis; 14, Galinsoga). 
Tribe 1. HELIANTHEAE, in part (genera 1— —18, p . 99). 
* The central _ of the a head, i.e., exclusive of the rays, known as the disk. 
+ mona Bete: , Eastwoodia; 97, Santolina; and some spp. in 1, Wyethia; 5, Rudbeckia; 
8, Encelia; 9, Geraea; 12, siden 
