410 COMPOSITiE. Trixis. 



in Proc. Calif. Acad. ii. 182, fig. 53, with some seeming monstrosities. T. corymhosa, Gray 

 in Coll. Priugle, &c. ; but tiiat species should have petiolate leaves and loosely corymbose 



heads. Hills and cauons, fS. W. Te.xas to Arizoua, Writjld, &c. Pounded on Mexican 



specimens with narrow leaves revolute when dry. (Mex.) 



Var. latiliscula. Leaves lanceolate, plane, commonly glabrate and greener, from 

 4 to nearly 12 lines wide, tlience varying into tlie narrow-leaved form. — Gray, PI. Wright. 

 ii. 102; T. suff'ruticosa, Wats. Bot. Calif, ii. 459. — Canons, S. New Mexico to San Diego 

 Co., California, Wricjht, Palmer, Greene, Leminon, &c. 



T. FRUTESCENS, P. Brownc, which the broad-leaved forms of the preceding species nearly 

 approach, was collected by Berlandier near Matamoras, but has not yet come from Texas. 



Tribe XI. CICIIORIACE.^, p. 83. 



207. PHALACR6SERIS, Gray. (*aXa/<pos, bald-headed, and cre>?, the 

 Greek name of some kind of Ci(;hoviaceou.s phxnt). — Proc. Am. Acad. vii. 3G4; 

 Bot. Calif, i. 423. — Single species. 



P. Bolanderi, Gray, 1. c. Glabrous and acaulescent perennial, with thickish root : leaves 

 lanceolate, entire, clustered on the caudex, slightly succulent: scape perfectly naked, a span 

 to a foot high: solitary liead half-inch high: flowers deep yellow, in summer. — California, 

 in wet mountain meadows of the higher Sierra Nevada, Marijiosa Co. ; first coll. by Torreij 

 and by Holander. 



208. ATRICH6SERIS, Gray. ("A^pi^, without hair, and o-e'pt?, a Cicho- 

 riaceous plant.) — Malacothrix § Anathrix, Gray, Proc. Am. Acad. ix. 213, & Bot. 

 Calif, i. 43.5. — Single species. 



A. platyphylla. Winter annual, wholly glabrous, somewhat glaucous : leaves all or 

 chiefly in a rosulate radical tuft, broadly cuneate or obovate, mostly rounded at summit, ses- 

 sile, spinulose-denticulate, somewhat veiny (inch or two long) ; those of stem reduced to 

 very small scattered bracts: stem slender, a foot or two high, at summit deliquescent into a 

 diffuse cymose panicle of few or luimerous slender-pedunculate heads : involucre quarter- 

 inch high, about half the length of the corollas (these white or with purple base) : akenes 

 2 lines long, at maturity nearly equalling the narroM' and open bracts of the involucre, white, 

 sometimes with 4 or 5 very thick corky ribs and much smaller alternate ones, sometimes 

 more terete and obscurely costate, the truncate summit wholly destitute of the border of 

 Malacothrix, its areola small: receptacle rather fleshy, scrobiculate. — Malacotlirix? phdy- 

 phi/lla, Gray, 1. c. — Gravelly deserts of the Mohave, S. W. California, to the southern bor- 

 ders of Utah, Cooper, Palmer, Parnj, Parish. 



209. LAMPSANA, Tonrn. (Ancient Greek name, of obscure deriva- 

 tion ; but the XapiJ/dva of Dioscorides and the Lapsana of Pliny, whose orthog- 

 raphy was followed by Linna3us, were Cruciferous plants.) — Yellow-flowered and 

 leafy-stemmed branching annuals of the Old World, one sparingly naturalized : 

 fl. summer. 



L. commt3\is, L. (Nippleavort.) A foot or two high, hirsutely pubescent or glabrate : 

 leaves ovate, repand-dentate, or lower lyrate and uppermost oblong : heads loosely paniculate : 

 involucre 2 or 3 lines high. — Eoadsides, in a few places, Penn. to New England, more 

 abundant in Canada, also on the Columbia Eiver. (Nat. from Eu.) 



210. APOG-ON, Ell. ('ATTOjycjv, beardless, i. e. no pappus.) — Low annuals 

 of the Southern Atlantic States, glaucescent, mostly glabrous, a span to a foot 

 high, branching from the base, bearing scattered rather small heads on slender 

 peduncles : flowers yellow, in spring and early summer. Leaves variable, lan- 

 ceolate or lower oblong, from entire or repand to dentate, or radical lyrate-piii- 



