COMPOSIT.E. 419 



couspicuous intiexed stipe. — Marin Co., near Olema, and elsewhere in 

 middle sections of the State, but not common. 



2. H. citriiia, Greene, Man. 194 (1894). Lowest leaves opposite, 

 oblong-lanceolate, 3-uerved, obtusish, glandular-piabeseent, not lanate: 

 Leads at first few, in a simple corymbose-panicle: flowers lemon-yellow: 

 tips of iuvolucral bracts short and broad; bracts of receptacle joined 

 into a cup: achenes with inconspicuous stipe. — Northern part of Marin 

 Co., a vernal species, flowering in April and May. 



3. H. Inznliefolia, DC. Prodr. vi. 692(1836). Lowest leaves opposite, 

 narrowly linear-lanceolate, acute or acuminate, silvery -canescent with a 

 fine appressed silky wool: inflorescence at length diffuse, very glandular 

 and ill-scented: rays white or pinkish: involucral bracts, achenes, etc., 

 as in the last, Var. lutescens, Greene. Flowers from rich cream-color 

 to lemon-yellow, the branches more slender; leaves narrower. — The type 

 abundant in fields and waste lands generally. The variety in Contra 

 Costa Co., near San Pablo, and in Marin, about San Rafael. June — 

 Dec. 



* * Heads racemosely arranged along simple branches. 



4. H. Cleveland!, Greene, Bull. Torr. Club, ix. 109 (1882). Lower 

 leaves narrowly linear, 1-nerved, silky-lanate as in the last, racemose or 

 spicate flowering branches villous with long spreading hairs: fl. white: 

 achenes nearly as in the last, — Common from Marin and northern Napa 

 Co. to Oregon. 



60. BLEPHARIZONIA, Greene. Stout and rather coarse glandular- 

 viscid and hirsute heavy-scented annuals, with linear entire lower, and 

 oblong upper leaves. Rixy-flowers 7 — 10, with 3-lobed white ligules. 

 Disk-flowers 10—30, the outer ones subtended by linear chaff. Achenes 

 silky-hirsute, 10-striate, those of the ray partly embraced by the involu- 

 cral bracts and with scanty pappus; those of the disk surmounted by 

 many densely plumose awns. 



1. B, plumosa, Greene, Bull, Calif. Acad. i. 279 (188.5); Kell. Proc. 

 Calif. Acad. v. 49 (1873) under Calycadenia. Somewhat paniculately 

 branching from the base, the branches bearing, racemosely, many heads, 

 these 15 — 20-flowered: ray achenes with a minute crown of short scales, 

 those of the disk 20 or more erect plumose bristles half as long as the 

 achene. — Plains near Antioch. Aug. — Oct, 



2. B. laxa, Greene, 1. c. Larger, 3—6 ft. high, loosely paniculate 

 above, the large heads borne singly at the ends of the branches, 20 — 2.5- 



