Malacothrix. COMPOSITE. 42]. 



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

 akenes oblong, with 5 broad ribs and little or no beak : pappus of unequal sparsely plumose 

 bristles, deciduous in a riug. — Lam. 111. t. 648; Reicheub. Ic. Fl. Germ. t. 1375. — Intro- 

 duced in a few places (as in Illinois, Hall), aud as a ballast-weed. (Nat. from Eu.) 



Var. Japonioa, Regel. Very hispid with dark bristles, even to the involucre. — P. 

 Japonica, Thuub. Fl. Jap. 299. P. Kamtschatica, Ledeb. Mem. Acad. 1814, & Fl. Alt. iv. 

 159.' P. Davurica, Fischer & Hornem. Hort. Hafu. Suppl. 155. — Sitka, Mertens, according 

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

 Japan, &c.) 



P. (HelmIntha) echioides, L., of the Old World., is a ballast-weed of occasional appear- 

 ance near New York and Philadelphia : it is known by the ovate and subcof date 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. PINAROPAPPUS, Less, (mvapo's, dirty, innr™?, pappus, this 

 being sordid or fuscous.) — Syn. 143 ; DC. Prodr. vii. 99. — Single species. 



P. roseus, Less. 1. c. Glabrous and glaucesceut deep-rooted perennial- stems scapiform 

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

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

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

 inLinn.xxii. 165. — High and rocky prairies, Texas, Lindheimer, Wright, &c. (Mex.) 



222. CALYC6SERIS, Gray. (K<£Xv£, a cup, alluding to the shallow 

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

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

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

 large 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. 106, & Bot. Calif, i. 431. 



C. W rigiltii, Gray. Flowers rose-color : akenes with thick and broad somewhat rugulose 

 ribs aud thickish beak. — Fl. Wright. 1. c. t. 14. — New Mexico from the Rio Grande to 

 Arizona and S. Utah ; first coll. by Wright. 



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

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

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



223. MALAC6THRLX, DC, extended. (MaXaKo?, soft, P i{, hair.) — 

 W. N. 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. 

 & Grav, Fl. ii. 485; Gray, PL FendL 113; Benth. & Hook. Gen. n. 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, closed in sunshine, purplish- 

 tinged in fading : broad-leaved annual. 



M. Coiilteri, 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, short-peduncled, hemispherical, over half-inch high: akenes 

 acutely about 15-ribhed 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 coll. by Coulter. 



