410 COMPOSITE; Trixis. 



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

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



heads. Hills aud cauous, S. W. Texas to Arizona, \Vri;/Itt, &c. Founded on Mexican 



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



Var. latiuscula. .Leaves lanceolate, plane, commonly glabrate aud greener, from 

 4 to nearly 12 lines wide, thence varying into the narrow-leaved form. — Gray, PI. VVriglit. 

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

 Co., California, Wright, Palmer, Greene, Lemmm, &c. 



T. FRL'TESCENS, P. Browne, which the broad-leaved forms of the preceding species nearly 

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



Teibe XL CICHORIACE^E, p. 83. 



207. PHALACR6SERIS, Gray. (4>aXa/<pd?, bald-headed, and o-e'pis, the 

 Greek name of some kind of Cichoriaceous phxnt). — Proc. Am. Acad. vii. 364; 

 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 head half-inch liigh : flowers deep yellow, in summer. — California,' 

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

 aud by Bulander. 



208. ATRICHOSERIS, Gray. {"kOpit, without hair, and o-epts, a Cicho- 

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

 Calif, i. 435. — 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 numerous slender-pedunculate heads: involucre quarter- 

 incii high, about half the length of tlie corollas (tliese Avliite or Avith purple base) : akenes 

 2 lines long, at maturity nearly equalling the narrow 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 ratlier fleshy, scrobiculate. — Malacothrix 1 platy- 

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

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



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

 tion ; but the Xa/xij/dva of Dioscorides and the Lajjsana of Pliny, whose orthog- 

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

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

 fl. summer. 



L. coMMtJxis, L. (Nipplewort.) A foot or two high, hirsutely pubescent or glabrate: 

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

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

 abundant iu Canada, also on the Columbia River. (Nat. from Eu.) 



210. APOG-ON, Ell. ('ATTOjywv, beardless, i. e. no papjius.) — 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- 



