246 COMPOSITAE 
rage ane phegvenng more or less Satente: the peduncles and involucres gorse -hispidulous 
well a mentose. Leaves 1-3.5 c ong, the upper leaves rather few, ing or shorter 
= wba the Boas a asharely div ‘ded to o midrib with divergent — of pie length, 5-15 
mm. long, these o often Sey ene with short lobes; involucres subhem “og eric, borne on Satitidies 
2-5 cm. lon ng 5 phyllaries 5-7 m ong, ‘bee obtuse t B treadly acute at apex, firm, the midvein 
ev vident, bec —. ‘Gore so in age: arginal flowers moderately enlarged nearly regular, creamy 
white Fagen “low s 4.5-6 mm. lo bar nearly tubular, crea ite, sometimes tinged with rose; 
achen £6 in m. long, strigose pappus-paleae "4, Sulit elanceslate somewhat unequal, the 
laineat Pov Pe the disk-flow 
Open, rocky or sandy deserts, poate venues and Sonoran Zones; southeastern Oregon, southern Idaho, 
ee pore and > ag Colorado sou uth to New Mexico, Arizona, and Seaman: genainen areas of veg hs) ae 
fornia r California and also pobre in + a southern ae Joaquin Valley, California. Type lit 
Idaho. Cctleeted by Tolmie. March— Has nah Pincushio 
ctis stevioides var. brachyp a (A. Gr ay) H. M. Hall, Univ. Calif. Pub. Bot. 3: 194. 
(Chacnuctis brachypappa A. Gray, tae ta Acad. 8: 390. 1872. aan often larger than the preceding; 
pappus of the disk-flowers as short as those of the marginal ones. Occurring with C. stev toides var. stevioides 
ae the type. ming in the Pahranagat noe Vales. central Nevada, gs the desert regions of California 
19. Chaenactis carphoclinia A. Gray. Pebble Pincushion. Fig. 5405. 
Chnanectis RR a se Mex. Bound. 94. 1859. 
t. Gaz. 47: 434. 1909. 
Ch ti. ? i Tease qiatkes 25951929; 
Slender, wiry-stemmed annuals, 1 .5-3 ae high, leafy, much-branched above the base, irregu- 
larly dichotomous, the heads many, terminating pe spreading branches, gar ool puberulen t 
throughout and often with glandular Pe a “hai irs on peduncles and involucres. Leaves 1-6 c 
long, petiolate, the upper leaves reduced, fe ica goo teate, pinnate to bipinnati fd. po lobes 
remote and narrowly linear to filiform : heads white- or pinkish- flowered on slender pedun cles 2-6 
cm. long; involucres subcampanulate, the phyllaries 7-10 mm. long, firm, linear, caudate-attenuate 
with a pale to reddish, setaceous tip, this more noticeable on the inner phyllaries; receptacle with 
few to several persisted rigid, hilects. hocks as long as the phyllaries ; corollas Pa mm. long, 
narrowly funn stot the é obes of the marginal flowers but little enlarged; achen ut 4 mm. 
long, with a sider "hair ; pappus-paleae of the disk-flowers broadly lanceolate, aisat one-half 
ie pat of ‘the seared "Copa of the marginal flowers truncate, less than one- -half the length of 
the c 
Sandy and gravelly, desert flats, Lower Sonoran Zone; southern Nevada and the Peale alley hen bing Cali- 
fornia, uk coor the sare and See Deserts to Lower California and western Arizona to Sonora. Type 
locality: Fort a, Ari March—May. 
ni s carphoclinia ‘ai Wied uata (A. Gray) M. E. Jones, Proc. Calif. Acad. II. 5: 699. 1895. 
(Chaenactis attenuata A. Gray, Proc. Amer. Acad. 10: 73. 1874.) Differs from C. carphoclinia var. carphoclinia 
by having all — pappus-paleae short and truncate and heads often, but not always, fewer-flowered and more 
narrow; receptacular bra eo vie ely lacking. Growing with the species throughout its range. Type 
locality: Ehren her rg, fain ‘Coes y, Arizon 
Chaenactis latifolia "Stockwell, Con tw Herb. 3: 128. pl. figs. 4-6. 1940. Somewhat leafy- 
stemmed, succulent annual, 15-35 cm. hi wh “ S 7 cm. long, the winged peta wikia the Bae, the blade 
with a broad rachis and i oa tae “livided with some econ bipinnatifid; heads about high, the 
} tat cream- chatty phyllaries a ute, hispid, glandular; corollas emadad near the + nibs about 
5 —- long, the poppe s-paleae 4, lanceolate, three- fourths the length of the caress Manton San Diego County, 
California, and n n Lower Joanne Type locality: yey San aa ego Cou 
Chacnactis nevi stisiat Contr. Dudley Herb. 129. ia "79 0. Wiry- stemmed, 
The, descriptions of the two preceding taxa have been ada apted from the original descriptions, as no material 
nh been found hs that Rovers sc en cenrorms * to the original diagnoses. Perhaps they are hybrids derived from some “of 
ie severa ring in 
60. OROCHAENACTIS Coville, Contr. U.S. Nat. Herb. 4: 134. pl. 10. 1893. 
Slender annual with long internodes, c Saag branching above. Leaves alternate or 
saree below, linear. Heads discoid, hie lustered in the ieaf-aciis, sessile or 
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striate, granular-glandular ; he pappus-paleae thin, hyaline, narrowly S tulate, lacerate- 
dissected on the margins and apex. [From the Greek word meaining mountain, and the 
genus Chaenactis.] 
A monotypic gen 
1. Orochaenactis ef Seorang (A. — 8 gs Orochaenactis. Fig. 5406. 
Chaenactis thysanocarpha A. Gra: a Amer. Acad. 19: 30. 188 
Bahia palmeri S. Wats. op. cit. poe 
Orochaenactis thysanocarpha Covi me diese U. S. Nat. Herb. 4: 134, 1893. 
Slender, reddish-stemmed annual 5-35 cm. high, simple below and branching above or branch- 
ing from the base, more or less granular-glandular t throughout and bearing sparse, loose, cobwebby 
