Malacothrix. COMPOSITE. 421 



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

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

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

 duced in a few places (as in Illinois, Hall), and as a balla.st-weed. (Nat. from Eu.) 



Vai'. Japonica, Kegel. Very hispid with dark bristles, even to the involucre. — P. 

 Jdjwniai, Thuub. Fl. Jap. 299. P. Kami schat lea, Ledeb. Mem. Acad. 1814, & Fl. Alt. iv. 

 159. P. Davurica, Fischer & Ilornem. liort. Hafu. Suppl. 155. — Sitka, Mcrtens, according 

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

 Japan, &c.) 



P. (IlELMiNTn.\) EcmoiDES, L., of the Old World., is a ballast-weed of occasional appear- 

 ance near New York and Philadelpliia : it is known by the ovate and subcordate foliaceous outer 

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

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



221. PINAROPAPPUS, Less, (riimpd?, dirty, 7rdiT-n-o<;, pappus, this 

 being sordid or fuscous.) — 8yu. 143 ; DC. Prodr. vii. 99. — Single species. 



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

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

 slender, rather rigid : leaves lanceolate and entire, and some i)innatifid : involucre over half- 

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

 in Linn. xxii. 165. — High and rocky prairies, Texas, Ltndhetvier, Wright, &c. (Mex.) 



222. CALYC6SERIS, Gray. (KaW, a cup, alluding to the shallow 

 cup at summit of akene, crept?, a Ciclioriaceous 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 

 large heads terminating the branches ; the ligules elongated ; i)eduncles sparsely 

 or copiously hispid with tack-shaped glands. Fl. spring. — PL Wright, ii. 104, 

 t. 14, Bot. Mex. Bound. 106, & Bot. Calif, i. 431. 



C. ^Trightii, Gr-^y. Flowers rose-color -. akenes with thick and broad somewhat rugulose 

 ribs and thickish beak. — PI. Wright. 1. c. t. 14. — New JNIexico from the Kio Grande to 

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



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 Parr//. 



223. MALACOTHRIX, DC, extended. (MaAaKos, soft, 6pii, 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. 

 & Gray, Fl. ii^ 485 ; Gray, PL 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 orliicular ; inner from oval to ol)loiig-lanceolate : receptacle 

 bearing slender persistent bristles : corollas white, closed in sunshine, purplish- 

 tinged in fading: broad-leaved annual. 



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

 spatnlate, u])per cauline ovate or cordate and clasping, sparsely laciniate-dentate : heads 

 terminating loose branches, short-peduucled, hemispherical, over half-inch higli : akenes 

 acutely about 15-ribl)ed and 4-5-angl(Kl, the summit obscurely denticulate by projection of 

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

 Mohave desert to Sau Luis Obispo, &c. ; first coll. by Coulter. 



