﻿76 PLANTS FENDLERIANiE. 



May. (395.) — Dwarf, more hoary than in the ordinary plant, from which I cannot 

 separate it. It is the same as the A. (Blepharodon) Coulteri, Harv. 8? Gray, ined., from 



California. Other forms, which I cannot distinguish specifically, were gathered around 



Saltillo by Dr. Gregg. 



y f356. A. gracilis: pilosus, humilis ; caulibus e radice bienni ramosis ; foliis inferio- 

 ribus parce pinnatifidis segmentis oblongis obtusis, superioribus integris linearibus sub- 

 dentatis, dentibus pulchre setigeris ; ramis monocephalis ; involucri campanulati squamis 

 3-4-seriatis lineari-lanceolatis setigero-mucronatis pilosulis ; ligulis 15- 18; receptaculo 

 valde fimbrillifero, fimbrillis setoso-subulatis achenia subcompressa sericea fere aequanti- 

 bus ; pappo e setis valde inaequalibus, intimis rigidis basim versus incrassatis corollam 

 suba^quantibus, exterioribus gracilibus sensim dimidio-4-plo brevioribus. — Dieteria (Si- 



•deranthus) gracilis, Nutt. in Jour. Acad. Philad. («. ser.) \.p. 177. — Along Santa Fe 

 Creek. (393.) — Our specimen is a very incomplete autumnal one; the pappus whit- 

 ish. An original one of Mr. Gambell's, with which I have compared it, is a plant about 

 9 inches high, with slender branches ; the linear leaves half an inch or less in length ; the 

 heads about the size of those of A. spinulosis ; and the pappus rufous. It belongs to the 

 section Blepharodon, DC. ; but the pappus consists of as unequal and coarse bristles as 

 in the true Aplopappi. The characters of a new Texan species of the same section, which 

 has a still more rigid pappus, are subjoined.* 



357. Prionopsis ciliata, Nutt. ; Ton. fy Gray, Fl. 2. p. 245. Low prairies on 



* APLOPAPPns aureus (sp. nov.) : humilis, minute viscoso-glandulosus, primum subarachnoideus ; caulibus 

 e radice perenni? adsurgentibus diffusis ; ramis ramulisve apice corymbosis monocephalis; foliis anguste line- 

 aribus scabrido-glandulosis setigero-mucronatis lobis dentibusve setigeris utrinque 1-4 instructis, summis inte- 

 gerrimis; capitulis nudis ; involucri hemisphcerici squamis oblongis pluriseriatis appressis apice brevi obtusius- 

 culo herbaceis muticis, intimis scariosis acutis discum subaequantibus ; receptaculo alveolato-fimbrillifero ; 

 acheniis brevibus turbinatis villosissimis ; pappo albo e setis circiter 10 validioribus corollam subsequanlibus et 

 20-30 sensim minoribus, omnibus rigidis. — Low prairies, near Houston, Texas, Mr. Charles Wright '; Sept., 

 Oct. — Stems or branches 6 or 8 inches high, terminated by a loose corymb of five or six showy heads. 

 Lower leaves about an inch long, scarcely a line wide, the upper almost filiform. Involucre half an inch in 

 diameter ; the numerous golden-yellow rays about the same length. — Of still stouter bristles is the pappus 

 of the subjoined rayless species, which should doubtless form a distinct subgenus, viz. : — 



§ ACAMPTOPAPPUS : ligulse nulla? : squamas invol. hemisphasrici pauciserialis oblongae, obtusissimee, 

 marginibus sphacelato-scariosse : pappus achenium et corollam vix adsequans, e setis 20-30 rigidis insequa- 

 libus, majoribus complanatis sursum clavellato-incrassatis, constans. 



' A. sph-erocephalus (Harv. Sf Gray, PI. Coult. ined.) : fruticosa ? glabra ; foliis caulinis ignotis, ramea- 

 libus parvis rigidis linearibus uninerviis sessilibus ; capitulis (4-5 lin. diam.) 30-40-fioris corymbosis brevi- 

 ter pedunculatis; alveolis receptaculi dentatis ; achenio turbinato sericeo-villosissimo. — California, Coulter. 



