coMrosiT^. 423 



11. C. oppositifolia. Hetaizonia oppositifolia, Greene, I. c. 110. Very 

 slender, mostly less than a foot high, simple or branched, all the leaves 

 opposite and with long interuodes, the heads few and sessile in the leaf- 

 axils, or terminal: stem pubescent: narrowly linear leaves ciliate at 

 base, the floral similar except as to length, and with usually several 

 slenderly stalked glands at and near the apex: teeth of the cup of the 

 receptacle gland-tipped: rays 3, white, changmg to rose-red, their 

 achenes black, obovate-trigonous, nearly smooth, glabrous: paleae of 

 disk-pappus all short, the alternate ones truncate or obtuse. — Foothills 

 of Butte Co. Parri/, Mrs. Bidwell. 



12. C. Fremonti, Gray, Bot. Mex. Bound. 100 (1859). Erect, slender 

 sparingly branched, seldom a foot high, more or less hirsute; leaves nar- 

 rowly linear, scabrous, setose-hispid at base, the floral ending in a sub- 

 clavate stalked gland: heads solitary, terminal and axillary, subsessile: 

 cup of the receptacle with about 12 obtuse teeth: rays 5 — 7, their 

 achenes smooth; disk-achenes about 20, hirsutulous, their 10 pappus- 

 scales all of equal length and subulate-pointed, little longer than the 

 achene. — Collected only by Fremont, a half-century ago, the special 

 locality not recorded. 



13. C. elegans. Slender, erect, about a foot high, somewhat fastig- 

 iately panicled above, with solitary heads sessile in the leaf-axils and 

 terminal: leaves hispid-ciliate below the middle, the floral very few and 

 short, adorned with one terminal and usually several lateral stalked 

 glands: cup of receptacle elongated, acutely 3—5 toothed and the whole 

 exterior thickly beset with stalked glands: ray solitary, its achenes gla- 

 brous, faintly tuberculate: disk-flowers 3 — 6, their achenes elongated, 

 pubescent, crowned with a very short pappus of dark brown palese 

 which are alternately obtuse and aristate pointed. — Dry open hills, at 

 the northern base of Mt. St Helena, associated with Hemizonia Cleve- 

 landi, apparently collected only by the author, in 1888. 



14. C. pauciflora, Gray, Bot. Mex. Bound. 1. c. Stem 1 — 2 ft. high, 

 parted at the middle into many divergent long loosely spicate slender 

 branches: pubescence scanty, but main leaves bristly-ciliate below the 

 middle, the few oblong gland-tipped floral ones more distinctly ciliate 

 throughout: cup of the receptacle sparsely strigose and with some sub- 

 sessile glands on the outside, the 4 or 5 teeth obtuse and murcrinate : 

 achenes of the single ray-flower smooth and glabrous, short, obovate- 

 trigonous; those 3 — 5 disk-flowers hirsutulous and with a very short 

 pappus of alternately pointed and pointless palefe. — Lake Co, Pringle. 

 Also collected by Fremont, but precise locality unknown. 



15 C. rainiilosa. Size and slender habit of the last, but diffusely 



