Blennosperma. COMPOSITE. 395 



1. S. Fremontii, Gray. Two or three inches high, much resembling Actino 

 lepis Wallace* : leaves spatulate or narrow cuneate, 3-lobed at the apex, or some- 

 times nearly entire : earliest head slender-peduncled, the others clustered : flower. - 

 golden yellow. 



In the desert region of the southeastern borders of the State (Soda Lake, Dr. Cooper), and in 

 S. Nevada and Utah (Fremont, Newberry, Capt. Bisliop, Palmer). Heads 3 lines, rays barely 2 

 lines long. 



82. TRICHOPTILIUM, Gray. 



Head many-flowered ; the flowers all perfect and tubular. Involucre hemispher- 

 ical, of about 10 ovate-lanceolate thin-herbaceous almost equal scales, somewhat in 

 two series. Eeceptacle flat and naked. Corolla cylindraeeous, with 5 short and 

 spreading ovate lobes : filaments inserted just above its base. Style-branches with 

 dilated and very obtuse or truncate tips, but no proper appendage. Akenes oblong- 

 turbinate, hirsute. Pappus of 5 broad hyaline or at length firmer nerveless chaffy 

 scales, which are dissected into slender but rather rigid bristles, the middle ones 

 little shorter than the corolla. — A single species. 



1. T. incisum, Gray. A small and depressed winter-annual, diffusely branched 

 from the root, a span or less in height, clothed throughout with long and loose or 

 somewhat deciduous white wool, under which it is somewhat hirsute or glandular : 

 leaves alternate or the lower opposite, oblong-cuneate or spatulate, coarsely and 

 sharply toothed or cut-lobed : heads (about -f lines long) solitary on slender pedun- 

 cles, the earlier ones scape-like : corolla " yellow." — Dot. Mex. Bound. 97 ; Torr. 

 Pacif. E. Eep. v., t. 5. 



Gravelly hills, of the Colorado desert region near Fort Yuma, Mohave, &c., Fremont, Thurh r, 

 Lieut. Du Barry, Cooper. The latter, who found it in ravines of the Caldo Valley, states thai 

 the flowers are yellow. Akenes membranaceous, slightly 5 - 6-nerved, somewhat angular: pap- 

 pus-scales (including the bristles, of which the outer are regularly shorter) about the length of 

 the akene. 



83. BLENNOSPERMA, Less. 



Head many-flowered, with 5 to 12 pistillate rays, and sometimes as many apeta 

 lous pistillate flowers ; the disk-flowers numerous, all sterile. Scales of the hemi- 

 spherical involucre 5 to' 12, in a single series, equal, oblong, plane, membranaceous, 

 somewhat united at base. Receptacle flatfish, naked. Rays an elliptical or oblong 

 entire ligule sessile on the ovary, without a tube. Corollas of the disk-flowers with 

 narrow tube abruptly expanded into the broadly campanulate 4 - 5-lobed limb. 

 Anthers oval. Style in the fertile [lowers with flat linear or oblong stigmatie lobes, 

 in tlie staminate (lowers undivided and capitate or disk-shaped at summit : these 

 (lowers with barely a rudiment of ovary. Fertile (ray) akenes pyriform, obscurely 

 8- 10-ribbed, destitute of pappus, powdered as it were with papillae which when 

 moistened apparently develop into jelly. — Low and diffusely branching annuals 

 (of Chili and California), glabrous or nearly so; with alternate leaves pinnately 

 parted into narrow linear divisions, and rather small pedunculate heads of light 

 yellow dowers, terminating the branches. — Torr. & Gray, Fl. ii. 272 : Gray, Proc, 

 Am. Aead. ix. 200. 



I. B. Californicum, Ton. A Gray. About a span high : scales of the involu- 

 cre and rays 7 to 12: B Beries of pistillate flowers within and alternating with the 

 rays: style-branches of the fertile flowers oval or oblong, flat. — C<>ni<>tli<lf Cali- 

 fornica, I M '. 



