COMPOSIT.E. 375 



2. H. obtasa. Size and habit of the precedinj^, but stouter, the 

 much lar<,'ef heads scarcely more thau simply spicate toward the ends of 

 the l)rauches: leaves rouad-obovate, about 1 in. lontj, sessile l)y a broad 

 claspino- base, rather closely spiuesceut-toothed: heads rather more 

 thau '4 iu. high; bracts of the involucre closely imbricated iu many 

 series, witliout squarrose tips, and all very obtuse, even almost truncate, 

 but with a short cusp: rays none: achenes wholly glabrous; pappus of a 

 light reddish brown. — A very distinct species, known only by specimens 

 obtained in San Emidio Canon, Kern Co., in 189i, by Miss Eastwood. 



3. H. Whitneyi, Greene, Pittonia, iii. 43 (1896); Gray, Proc. Am. 

 Acad. vii. 353 (1868), under Aplopappus. Suffrutescent, 1 — 2 ft. high, 

 glandular-scabrous, the upper part of the stem sometimes tomentosely 

 pul)esceGt: leaves 1 — 2 in. long, oblauceolate, acute, serrate, sessile by a 

 half-clasping base : heads % ii- bigb or more, subpaniculate on short 

 terminal and subterminal branches, or subsessile and glomerate: bracts 

 of the involucre narrowly lanceolate, acute, the tips often slightly re- 

 curved, not squarrose: rays 6 — 8, short, golden -yellow: achenes gla- 

 brous; pappus deep reddish-brown. — Subalpine in the Sierra Nevada, 

 and the inner Coast Range northward. 



19. LESSINGflA, Chamisso. More or less floccose-woolly annuals 

 with alternate more or less serrate leaves and small cymosely panicled 

 heads of yellow, whitish or purplish flowers, these all perfect. Corollas 

 with slender tube and long narrow lobes; those of the marginal row 

 more deeply cleft on one side and imitating a palmatifid ligule. Invo- 

 lucre campanulate or turbinate; bracts much imbricated and appressed, 

 herbaceous-tipped. Anthers with slender-subulate appendages. Ap- 

 pendages of style-branches obtuse or truncate, densely hispid, often 

 with a setiform cusp amid the hairs. Achenes turbinate or cuneiform, 

 silky-villous. Pappus-bristles rigid, scabrous, red or brownish. 



* Yellou'-Jloivered species. 



1. L. (rermanorum, Cham, in Linnsea, iv. 203 (1829). Low, slender, 

 branching and spreading from the base; branchlets at length glabrate, 

 purple: lower leaves sinuate-pinnatifid, those of the branches narrowly 

 oblauceolate : involucre hemispherical, its bracts more or less green- 

 herbaceous not glandular. — San Francisco and southward in sandy soil 

 near the sea. 



2. L. glandulifera, Gray, Proc. Am. Acad. xvii. 207 (1882). Erect, 

 stoutish, diffusely branched above: leaves more irregularly and deeply 

 toothed or cleft, those of the stem more numerous, ovate or oblau- 

 ceolate, and of the branchlets minute and almost crowded, rigid, beset 



