220 COMPOSITAE 
series and connate into a ciliate-toothed cup. Receptacle high-conical, muricate. Pistillate 
ray-flowers fertile ; hermaphrodite disk-flowers regular, the tube slender, the throat widely 
campanulate, aes obes spreading. Anthers obtuse at base. Ne S heanenes somewhat flat- 
id 
tened, truncate. Achenes narrowly obovoid in outline, so at compressed and incon- 
spicuously 2-4. angled pappus none or of firm, awned or Retake paleae. [A Greek cour- 
tesan, " oapil of Plat 
A genus of 3 species, two natives of the Pacific States and one of Chile. Type species, Lasthenia obtusifolia 
Cass 
Lee: of the ray-flowers inconspicuous, shorter than the involucre; pappus of erose or laciniate or awn-pointed 
cales. 1. L. glaberrima. 
Cieuler ey he ray-fl pi , evidently surpassing the involucre; pappus none. 2. L. glabrata. 
1. Lasthenia ea DC. Smooth Lasthenia. Fig. 5358. 
Lasthenia glaberrima DC. Prod. 5 1836 
Lasthenia minima Suksd. Allg. Bot. ar 12: 7. 1906. 
Plants mostly simple, 10-35 cm. long, weakly ascending and with few branches, rooting from 
the lower nodes, esbeatlati glabrous throughout, sometimes puberulent about the invuhacres: 
Leaves 4-8 cm. long, linear, obtuse; heads on peduncles 2-15 cm. long; involucres 5-7 mm. high, 
1 
. Sates acute, ciliate; ligules of the ray-flowers shorter than ‘er phi eae disk-flow Pelee 
1 mm. long, gla: sea shorter than the achenes; achenes dull, s — compressed, the fac 
bluntly maeled: pappus of 5-10 firm, erose-laciniate to awn- pkey: eates 
Vernal pools and ae places, Upper Sonoran Zone; southwestern Washington mostly west of the Cascade 
Witniginn Baar aie through western Oregon and the Coeat 3 icc and Sicrameace cage California, to Santa 
Clara and Alameda Counties. Type locality: California. Collected by Douglas. March-May 
— Lasthenia glabrata he Yellow-rayed Lasthenia. Fig. 5359. 
t ndl. Bot. Reg. 21: pl. 1 835. 
oe oie DC. ex Lindl. loc. cit. a pe 1780. 
Erect plants 1.5-6 dm. high, — stemmed or less commonly branched from the base, 
ous or m r 
c ranched above, glabr ore or less puberulent with curved hairs on the upper 
steins especially just below th sinh Leaves 0 cm. long, somewhat y, or less 
c t ase; heads many-flowered, borne on peduncles 1-10 cm. long, these enlarged at the 
summit; involucre 5-8 m big ae ns hemispheric, the acute tips of the phyllaries ciliate ; 
ligules of the ray-flowers 5-10 m ; disk-flow bout = . Bt . d ; 
achenes narrowly oblon ng-ovoid, fokickahis ‘compressed, appear ooth to the naked e ca- 
sionally a few achenes in the head bearing a few yellow, ener Tike points, "the thin beligiat coat 
s ees 
In hea 1, borders of salt marshes and vernal ponta:d in sae and Eisint, Upper Sonoran Zone; Humboldt 
County to ae mE tae Obispo —— Semler? in the Coast Ranges and in the Sacramento and San Joaquin 
Valleys we far south as Kern County. Type locality: California. Marc a May 
Lasthenia glabrata var. coilteri (Greene) A. Gray, Syn. cient 12; 324. 1884. (Lasthenia coultert 
Genin Ball Calif. Acad. 1: 192. 1885.) Habit of L. glabrata var. eno a, differing in having the usually less 
compressed achenes m or le: ied covered with yellow, gland-like points. Saline mir and alkaline plains, south- 
ern Salinas Valley a a oe uth n Sacramento Valley to southern California where it is the typical form. Type 
locality: southern Gaifortia. Sark May 
51. CROCKERIA Greene ex A. Gray, Syn. Fl. N. Amer. 12: 445. 1884. 
Glabrous or sparsely pubescent herbs, mostly simple-stemmed below, branched above. 
Leaves opposite, linear, sessile, shortly connate at base, cymosely branched, the many-flow- 
ered heads borne on rather long pethaiicles. Involucre hemispheric, the phyllaries thin, 
united more than half their length, the tips triangular and sparsely pilose. Receptacle 
conic. Ray-flowers pistillate, fertile. Disk-flowe rfect, many, tube slender, longer than 
a e. Style-bra 
ia 
fringe of short, stout, glandular hairs. Pappus none. [Name in honor of Charles Crocker, 
a patron o California botany. | 
A monotypic gen 
1. Crockeria chrysantha Greene. Crockeria. Fig. 5360. 
Crockeria i a Gray, Syn. Fl. N. Amer. 12: 445. 1884. 
Erec uals, or with several ge arising from the base in vigorous plants, 8-28 cm. 
tall. is nail pier = fleshy, 1-5 cm. long, shorter hin or equaling the internodes ; heads 
radiate, many-flo wered, golden ica: eg ae 3-6 cm. long, slightly enlarged and pubescent 
i about 5 mm. high an m. or less broad, the trian 
10-12, pilose on the inner surface and margin, abou t 2 mm. long; rays 6-10, narrowly oblong, 
6-7 mm. long, with 2-3 shallow teeth at the apex; disk-flowers Poa ee about 2.5 
mm. long; achenes a 2 mm. long, dull black and more or less granular, striate, with a dense 
marginal fringe of stout, clavate, glandular hairs and a — atlas at base, epappose 
Fields, in alkaline soil, Lower Sonoran Zone; San > Hey, California, Siaidalaus Paaaty south to 
pew. and Tulare Counties. Type insnbity: near Lake Tulare, Palace County. Collected by Greene. March— 
