338 DESCRIPTIONS OF NEW SPECIES 



Diaperia prolifera. Evax prolifera; Nutt. in Decand., Vol. V., p. 459. 



Hab. On the banks of Red River, near the confluence of the Kiamesha. About two to four 

 inches high. Stem mostly simple, though sometimes branching from the summit of the root. 

 Primary capitulum one half to three-fourths of an inch in diameter, sending out from its disk one 

 to three branches, each terminating in a similar smaller capitulum. There appears to be no pro- 

 per involucrum, the outermost scales presenting the slender, filiform, female florets. The ache- 

 nium seems similar with that of Evax pygmsea. 



Diaperia? multicaulis. Evax multicaulis; Decand. Prod. V., p. 459. This 

 plant I have not seen, but imagine it may belong to the present genus. 



*STYLOCLINE. 



Capitulum many-flowered, heterogamous ; flowers all tubular; radial feminine, 

 in many series, filiform, (with a mere vestige of corolla,) mostly concealed 

 in a central cleft of the subcarinated, concave, chaffy scale of the receptacle; 

 central masculine florets three or four, four-toothed, minute. Receptacle 

 naked, slender, columnar, wholly bracteolate, the apex producing a few 

 long, chaffy hairs. Involucrum imbricate, of a simple series of (about five) 

 concave, dilated, ovate scales; fructiferous scales broad ovate, membranace- 

 ous, with an herbaceous centre, the back and base below densely laniferous. 

 Achenium minute, oblique, cylindric-oblong, very acute at the base, smooth 

 and shining, (apparently a naked seed!?) — Annual herbs of Upper Califor- 

 nia, with the whole aspect of Gnaphalium ; decumbent and diffusely branched 

 from the base, canescently lanuginous, with small, linear, entire, sessile 

 'leaves. Flowers in axillary and terminal sessile clusters, of a yellowish 

 white, the scales diaphanous and shining. Seeds, or achenia enclosed in the 

 base of the scales, which are deciduous. — (The name from CrvTyOS, a column, 

 and yvvYi, a female; in allusion to the very singular columnar receptacle.) 



Stylocline *Gnaphaloides. 



Hab. Near Monterrey, Upper California. Stem much branched, diffusely spreading, decum- 

 bent, about six inches high, branching from the neck of the root, more or less canescently tomen- 

 tose. Leaves small, oblong, linear, sessile, three or four lines long, about a line wide. Flowers 

 in terminal sessile clusters, partly sheathed by a number of approximating leaves. Capitulum 

 ovate, made up of imbricated, rhomboidal-ovate, concave, receptacular scales ; the involucrum of a 



