446 ADDITIONS. 



167. HYMENATHERUM, p. 357, add: 



§ 2^. Heterochromea. Palese of the simple pappus 10, little shorter than 

 the slender akene and the disk-corolla, lanceolate, resolved above into 5 or 7 awns, 

 the central one longer, and the lateral successively shorter : rays white ! 



H. COncinnum. Depressed and spreading from the annual root, mostly glabrous, glau- 

 cesceiit : leaves chiefly alternate, thickish, pinuately parted into narrowly linear obtuse and 

 pointless divisions : heads sessile and clustered at summit of the short leafy branchlets : in- 

 volucre 12-14-toothed, nearly naked at base: rays 10 or 12, the showy oblong ligules (2 lines 

 long) bright white; the disk-flowers yellow. — Arizona, on the borders of Souora, 1884, 

 Primjh. — A handsome species, anomalous for its heterochromous flowers ; and in other re- 

 spects serving to connect the first two sections with true Iljmenathevum. 



192. SENECIO, at end of genus, p. 394, add : 



* * * * Indigenous winter annual: heads rayless or with a few niiiuite raj's. 

 S. Mohavensis. Glabrous, branching from the base, rather slender, leafy to the loose 

 polycephalous panicle : leaves ovate or oblong, sinuate-dentate or sparingly incised ; cauline 

 all more or less cordate-clasping or auriculate : heads slender-peduncled, 4 lines high : invo- 

 lucre narrow-campanulate, 18-20-flowered ; calvculate bracts few and inconspicuous: ray- 

 flowers when present with corolla commonly biligul.ate, not surpassing the disk-flowers : 

 akenes canescent. — S. E. California on or near the Mohave and Colorado Kivers, Lemmon. 

 (Also witJiin the borders of Sonora, Max., Pnngle) 



226. HIERACIUM, to H. Marianum, p. 426, add: 



Var. spathulatum. A mountain form leaves all or mainly radical, unusually 

 setose-hirsute or long-villous : scapiforra stem simple, 10 to 16 inches higli, bearing few 

 rather short-pedicelled heads. — //. hmijlpihnn, var. sjiathulalum, at foot of ji. 426, which is 

 to be cancelled. Pilosel/a spuihulata, Schultz Bip. in Flora, 1862,439 — On Tuscarora or 

 Two-top Mountain, Franklin Co., Pennsylvania, Porter and Tia'dl Green (1845 and 1884), 

 flowering and fruiting in June. 



Page 3.55. Nicolletia occidentalis proves to be a deep-rooted perennial, according to Lemmon 

 and Parish. Possibly N. EdwardsU is also perennial. 



Page 415. Rajinesquia Ccdifornica not rarely has pale rose-colored ray-flowers. 



