﻿74 PLANTS FENDLERIAN&. 



nerviis, caulinis obtusis deorsum attenuatis ; involucro hemisphaerico vix pedunculato ; 

 ligulis 10-12 lineari-oblongis, fl. hermaph. circiter 30; acheniis junioribus turbinatis 

 sericeo-villosis disci et radii pappo conformi donatis, e paleis 5-6 ovatis brevissimis pi. m. 

 coroniformi-concretis. — Low prairie, from the Upper to the Middle Spring of the Cimar- 

 ron ; Aug. (527.) — Plant a span to a foot high, slightly glandular-scabrous, divergently 

 much branched, very leafy. Cauline leaves less than an inch long. Heads about as 

 large as those of Amphiachyris dracunculoides ; the rays rather large, and spreading. 

 Receptacle conical, alveolate-dentate. Pappus shorter than the ovary, or than the proper 

 tube of the corolla ; that of the rays similar, or very little smaller. — This species, and 

 the nearly allied Hemiachyris glutinosa, Schauer in Linncea, 19. p. 724 (or at least a 

 plant of Coulter's Mexican collection which I take to be that species, notwithstanding it 

 presents an evident, though smaller, pappus in the ray), agree with Hemiachyris, DC, in 

 the short and somewhat coroniform pappus, and in the solitary heads ; but differ from 

 Texana, DC, in having a pappus also in the ray ; and thus confirm the propriety of re- 

 ducing that genus to a section of Guttierrezia.* 



f344. Amphiachyris dracunculoides, DC. ; Ton. fr Gray, I. c. High prairies, 

 near the upper ferry of the Kansas River ; Sept. (528.) — Cultivated in the Botanic 

 Garden, this proves to be quite an ornamental plant. 



f345. Solidago speciosa, Nutt. ; Ton. #• Gray, Fl. 2. p. 205. With the last. 

 (531.) 



346. S. speciosa, /3. angustata, Ton. $• Gray, I. c. Mountain-sides, Santa Fe 

 Creek; July. (387.) 



f 347. S. rigida, Linn. Council Grove, &c. ; Aug., Sept. (389.) 



f348. S. ulmifolia, Muhl. ; Ton. #• Gray, I.e. p. 211. Prairie, south of the upper 

 ferry of the Kansas River ; Sept. (530.) 



were drawn from a single head of unexpanded flowers, with the setae of the pappus and the form of the ache- 

 nium not yet developed. The genus should evidently stand hetween Boltonia and the Australian genus 

 Brachycome. 



* The original Guttierrezia linearifolia, Lag., if truly Mexican, has not been identified. From the imper- 

 fect character, I suspect it may be the Brachyris divaricata, Null., which sometimes has only three or four 

 rays, and which Lieut. Emory collected in New Mexico. The G. linearifolia, Hook, fy Am. in Comp. Bot. 

 Mag. 2. p. 51 fy p. 254, from Chili, does not agree with Lagasca's character, and is very near G. Califor- 

 nica. G. microcephala, the Brachyris microcephala, DC, non Hook., which was gathered at Saltillo by Dr. 

 Gregg, has only one or two rays and as many disk-flowers : the pappus of the ray consists of oblong and dis- 

 tinct paleae, much shorter than the achenium : that of the disk is formed of similar, although more slender, 

 palese ; but the achenium appears to be abortive, as in Amphiachyris, thus invalidating the distinction between 

 those two genera. 



