428 COMPOSIT.E. 



* * Herbage dull and dark, ill-scented: disk-aclieiies with pappus. 



5. C. Fitchii, Greene, 1. c; Gray, Pac. R Rep. iv, 109 (1857), uuder 

 Hemizirnia. Stout, widely branching, 1 — 2 ft. high, villous hirsute, 

 somewhat viscid, more or less beset with stalked glands: leaves mostly 

 entire, linear-acerose, the very lowest pinnately divided into about 3 

 pairs of linear-acerose segments: bracts of the involucre conspicuous, 

 subulate; those of the receptacle soft, pointless, long-villous: ray-achenes 

 obovate-triquetrous, light-brownieh, obscurely if at all tuberculate, in- 

 distinctly angled; those of the disk with 8-12 linear pappus-palese. — 

 Very common on plains and among the foothills of the interior, from the 

 borders of Oregon southward. 



66. BLEPHARIPAPPUS, Hooker (lukWK). Vernal annuals, with 

 alternate leaves, and mostly showy broad heads of white or yellow 

 diurnal flowers. Bracts of involucre flattened on the back, with dilated 

 and thin margins the whole more or less completely enfolding its ob- 

 compressed achene. Rays 8—20; their achenes obovate-oblong or nar- 

 rower, without pappus. Disk-flowers with cylindraceoiis-funnelform 

 5-lobed corollas; their achenes liiiear-cuueiform, usually wiih a pappus 

 of bristles or awns. Receptacle flat, bearing a series of chaffy bracts 

 between ray- and disk-flowers, these, with the involucral bracts, decid- 

 uous when mature, leaving a naked receptacle. 



* Pappus of 10 — 20 bristles which are stout, and, below the middle, 



long-plumose. 

 ■i—Hairs of pappus-bristles 7iot interlaced. 



1. B. heterotrichus, Greene, Pittonia, ii. 245 (1892); DC. Prodr. v. 

 694. (1836), under Madaroglossa; H. & A. Bot. Beech. 358 (1841), under 

 Layia. Erect, 1 ft. high or more branching from the base, rough-hirsute 

 or hispid and glandular: lower leaves lanceolate, laciniate-pinnatifid or 

 incised, the upper entire: rays large, white: long-villous hairs of the 

 pappus-bristles all erect and straight.— Eastern base of the Mt. Diablo 

 Range, on sandy plains. April, May. 



2. B. ^raveolens, Greene, 1. c. 246; also Bull. Calif. Acad. i. 92 

 (1885), under Layia. Stout, erect, 2 ft. high or more, sparingly branch- 

 ing, hirsute, and with numerous rigid gland-tipped hairs interspersed: 

 leaves all entire: heads very large, rays of a creaaay white: achenes 

 slenderly clavate; pappus when mature deciduous in a ring, the villous 

 wool of the bristles all straight and erect and two-thirds their length.— 

 Said to occur oa Mt. Tamalpais; but this may be doubted. It is of the 

 interior of the State, in Kern Co and northward. Apr.— June. 



