Malacothrix. COMPOSIT.E. 421 



dentate : heads half-inch or more high : enter bracts of the involucre broader and spreading : 

 akeues oblong, with 5 broad ribs and little or no beak: pappus of uner[ual sparsely plumose 

 bristles, deciduous in a rinff. — Lam. 111. t. 648: Keichenb. Ic. PI. G rm. t. 1.37.5. — Intro- 

 duced in a few j.lace.s (as in Illinois, Hail), and as a ballast-weed. (Xat. from Eu.) 



Var. Japonica, Kegel. Very hi-pid with dark bristles, even to the involucre. — R. 

 Jiiixinim. Thunh. II. Jap. 299. P. Kamtschatica, Ledeb. Jlem. Acad. 1814, & Fl. Alt. iv. 

 1.59. P. Davurica, Fischer & Hornem Hort. Hafn. buppl. loo. — Sitka, Mirten^, according 

 to Herder. (Occurs on Behring Island, off Kamtschatka, as well as on the mainland, 

 Japan, &c.) 

 ^P. (IlELMfNTHA) Eciiioi'iiEs, L., of the CH'l World., Ls a baUasfr-weed of occasional appear- 

 ance near New York and Philadelphia : it is known Ijy the ovate and subcordate foliaceous outer 

 bracts of the involucre, 3 to 5 in number, and by the narrow inner ones becoming thickened at 

 base in age ; also by the slender beak to the akene and a densely plumose pappus. 



221. PINABOPAPPUS, Le.ss. (Hti/apos, dirty, ^a—os, pappus, this 

 beiiii; sordid or fuscou.s.) — Syn. 143 ; DC. Prodr. vii. 99. — Sinili- species. 



, p. roseus, Less. 1. ,;. Glabrous and glaucescent deep-rooted perennial- stems scapiform 

 with a few minute bracts, and monocephalous, or leafy below with a few naked brandies, 

 slender, rather rigid : leaves lanceolate and entire, and some pinnatifld : involucre over half- 

 inch high : ligules conspicuous, rose-tinged or almost white. — Troximon Rcemerianum, Scheele 

 in Linn. xxii. 165. — High and rocky prairies, Texas, LifcV/ie/nicr, )Vriij/il,&c. (Mex.) 



222. CALYCOSERIS, Gray. (KaXvi, a cup, alludiiiir to the shallow 

 cup at summit of akene, a-epn, a Cichoriaceous plant.) — New Mexican and Cali- 

 fornian winter annuals, low, branching from the base, glabrous below and glau- 

 cescent ; with leaves pinnately parted into narrow linear lobes, and showy rather 

 laro-e heads terminating the branches ; the ligules elongated ; peduncles sparsely 

 or copiously hispid with tack-shaped glands. Fl. spring. ^ PI. Wright, ii. 104, 

 t. 14, Bot. Mex. Bound. IOC, & Bot. Calif, i. 431. 



Q_ "Wrightii, Gray. Flowers rose-color: akenes with thick and broad somewhat rugnlose 

 ribs and thlckish beak. — PI. Wright. 1. c. t. 14. — Isew Mexico from the Eio Grande to. 

 Arizona and S. Utah; first coll. by M'right. 



C. Parryi, Gray. Flowers yeUow i akenes more slender, .5-angled by the acute ribs, with 

 narrower beak and smaller apical cup. — Bot. Jlex. Bound. 1. c; Bot. Calif. L c. — San 

 Diego Co., California, to S. Nevada and adjacent Utah; first coll. hj Parry. 



223. MALACCTHRIX, DC, extended. (MaXaKo'?, soft, Bpl^, hair.) — 

 "\V. X. American herbs, leafy-stemmed or sometimes scapose ; with pedunculate 

 heads usually nodding before anthesis : flowers yellow or white, sometimes becom- 

 ing purplish-tinged ; in spring and early summer. — DC. Prodr. vii. 192; Torr. 

 & Gra}-. Fl. ii. 48.5; Gray, PI. Fendl. 113; Benth. & Hook. Gen. li. .518; 

 Gray, Proc. Am. Acad. ix. 213, & Bot. Calif, i. 432, excl. § 3. 



§ 1. Malacolepis, Gray, 1. c. Involucre very broad, of silvery-scarious bracts . 



with only a linear central portion green, regularly imbricated in several series ; 



the short outer ones orbicular ; inner from oval to oblong-lanceolate : receptacle 



bearing slender persistent bristles: corollas white, purplish-tinged in fading: 



broad-leaved annual. 



M Coulteri, Gray, 1. c. A foot or two high, rather stout, glabrous : leaves oblong or 

 spatulate, upper cauline ovate or cordate and clasping, sparsely laciniate-dentate : heads 

 terminating loose branches, sliort-peduncled, hemispherical, over half-inch high: akenes 

 acutelv about 15-ribbed and 4-5-angled, the summit obscurely denticulate by projection of 

 the ribs: one or two stouter pappus-bristles more persistent. — S. California, from the 

 Mohave desert to San Luis Obispo, &c. ; first coU. by Cuulter. 



