378 C0MPOSIT.E. Psathyrotes. 



§ 2. Scapose, erect : corollas nearly glabrous throughout : style-branches flatter, 

 very obtuse, externally minutely hirsute over most of the back. 



P. soaposa Geat. Leaves all at or near the base, ovate or roundish, almost entire, short- 

 petioled, at first loosely white-tomentose, at length glabrate : scapes or naked peduncles 

 several 3 or 4 inches high, bearing 3 to 7 corymbosely disposed heads, glandular-pubescent, 

 as also the campanulate involucre : bracts of the latter all somewhat herbaceous ; outer ones 

 broadly linear or barely oblong, equalling and not unlike the inner : akenes oblong-turbi- 

 nate, hirsute: pappus about half the length of the corolla. — PL Wright, ii. 100, t. 13. — 

 Borders of Texas, New Mexico, and Chihuahua, near El Paso, on the Itio Grande, Wright. 

 (Adj. Mex.) 



185. BARTL^TTIA, Gray. (John R. Bartlett, Commissioner of the 

 Mexican Boundary Survey, in which this plant was discovered.) — PL Thurb. 

 in Mem. Amer. Acad. v. ^24; Bot.Mex. Bound. 102. — Single species. 



B. SCap6sa, Gray, 1. c. Slender winter-annual, almost glabrous, flowering almost from the 

 base by monocephalous scapes of 6 to 9 inches high, and later by similar peduncles termi- 

 nating sparsely leafy branching stems : leaves slender-petioled, roundish or subcordate, 

 membranaceous, repand-dentate, some 3-5-lobed : head half-inch or less high : involucre 

 pubescent : flowers yellow : pappus rather fragile, little longer than the akeue. — New 

 Mexico, near El Paso, perhaps only below the Mexican boundary, Thurber, Schott, G. R. 

 Vaseij. (Adj. Mex.) 



186. CROClDIUM, Hook. (Diminutive formed from KpoVr;, loose thread 

 or wool, alluding to the wool which usually persists in the axils of the leaves.) — 

 Fl. Bor.-Am. i. 335, t. ILS; Torr. & Gray, Fl. ii. 448; Benth. & Hook. Gen. ii. 

 440. — Single species ; fl. early spring. 



'C. multicaule, Hook. 1. c. Small winter annual, a span or two high, flocculent-wooUy 

 when young, soon mostly glabrate, producing many simple stems from the tuft of obovate 

 or spatulate few-toothed sessile or short-petioled radical leaves : cauline leaves small, lanceo- 

 late to linear : head slender-pedunculate, rather small, but showy ; the ray and disk deep 

 golden yellow. — Plains and hiUs, British Columbia and Idaho to the northern part of Cali- 

 fornia ; first coll. by Douglas. 



187. HAPLO:fiSTHES, Gray. ('ATrXdos, simple, lo-^r^s, garment, the 

 involucre of unusually few pieces.) — PI. Fendl. 109, Pi. Wright, i. I'lo, & Bot. 

 Mex. Bound. 102. — Single species. 



H. Greggii, Geay, 1. c. Somewhat fleshy, herbaceous or suftrutescent, a foot or two high, 

 fastigiately branched, glabrous, leafy up to the loose cymes of a few slender-pedunculate 

 naked heads: leaves all opposite, very narrowly linear or filiform, entire; the lower connate 

 at base : heads 2 or 3 lines high : flowers yellow : ligules 1 or 2 lines long. — Saline soil, 

 S. E. Colorado and W. Texas to the Mexican border, Wright, Bigelow, Parri/, &c. (Adj. 

 Mex.; first coll. by Gregg.) 



188. LEPIDOSPARTUM, Gray. (Actti?, a scale, and cr-KapTov, the 

 Broom plant.) — Proc. Am. Acad. xix. 50. — Single species. 



~L. squamatum, Grat, 1. c. A rigid Broom-like shrub, 4 or 5 feet high; seedling plants 

 floccose-tomeutosfe and with spatulate entire alternate leases <ir half-incli or more in length; 

 but the primary branches and wliole subse(iucut growth glabrous or nearl\ so, and beset 

 with small and thickisli ajipressed green sciUcs in place of leaics : heads terminal or more 

 commonly spicate-panicul;ite on the slender branclilets, 3 to 5 lines long : involucre very 

 glabrous, 10-18-flowproil : corollas pale yellow. — Liiiosi/ris squamafa, Grav, Proc. Am. Acad, 

 viii. 290. Tdradi/iiiia (Lrpidosparton) squamata, Gray, Proc. Am. Acad. ix. 207, & Bot, 

 Calif, i. 408 ; var. Breiaeri & var. Palmeri are mere varying forms. Carphephoriis junceiis, 

 Durand in Pacif. R. Pep. v. 8, not Benth. Has been mistaken also for a Baccharis. — Dry 



