﻿PLANTS FENDLERIAN.-E. 11] 



443. C. altissimum, Spreng. ; Ton. <$• Gray, I. c. High banks on the Arkansas ; 

 Sept. (584.) 



Gregg. (Mr. Wright informs me that it abounds on the Rio Grande, Texas, and that he also met with it at 

 Austin.) Flowers purple. Scape often bearing two or three heads. — Hitherto known only in the collection 

 of Sesse and Mocjno (in herb. Lamb.), from which it was described by Don, who cites the manuscript name 

 of " Perezia runcinata," given to him by Lagasca. This name I restore, first, because the plant appears, judg- 

 ing from the figure in Delessert's Icones Selecla, to be a strict congener of Perezia Gayana, DC, and wants 

 the spinulose-toothed exterior involucral leaves of Clarionea as characterized by De Candolle ; and second, be- 

 cause the former name, being the earlier published, has been restored and the Candollian genera, apparently 

 with good reason, united by Endlicher. — The following plants, with undivided leaves and purple flowers, and 

 which have the copious bristles of the pappus by no means in a single scries nor penicillate at the apex, as is 

 said of Acourtia, I incline to refer to the same genus. But the genera of this tribe are still very far from 

 being satisfactorily settled. 



S P. nana (sp. nov.) : caulibus e caudice lanato vix pollicaribus foliosis capitulo (pollicari) circa 20-floro 

 haud longioribus ; foliis cuneato-rotundatis sessilibus glabris minutim glanduloso-scabris reticulatis grosse et 

 argutissime spinuloso-dentatis ; involucri campanulati squamis 3-4-seriatim imbricatis integris subciliatis 

 calloso-mucronatis, exterioribus ovatis, intimis oblongo-lanceolatis superne purpurascentibus ; receptaculo tuber- 

 culati-alveolato, alveolis parce hirsuto-fimbrilliferis ; ovariis glanduloso-puberis ; pappo albo copiosissimo, setis 

 pluriserialibus. — High and dry valley near Chihuahua, Dr. Gregg ; April. — Leaves and heads each about 

 an inch in length, very large for the size of the plant; but the specimens perhaps are stunted. Lips of the 

 purple corolla nearly equal in length. Manifestly a congener of the succeeding. 

 tS P. Wislizeni (sp. nov.): glaberrima ; caule fere bipedali erecto simplici apice nudiusculo monoccphalo; 

 foliis indivisis glaucescentibus obovatis vel obovati-oblongis semiamplexicaulibus pulcherrime reticulatis mar- 

 ginibus crebre calloso-denticulatis, summis ad bracteas spathulatas reductis ; involucro plusquam 50-floro hemi- 

 sphaerico atro-purpurascente glabro, squamis coriaceis 3-4-seriatim imbricatis subsquarrosis mucronulatis, 

 exterioribus ovato-rotundis, intimis oblongis acuminatis ; receptaculo subalveolato glabro; acheniis oblongo- 

 linearibus glabris ; pappo 2-seriali sordido. — Llanos, in the Sierra Madre west of Chihuahua, Dr. WisJizenus ; 

 Oct. — This striking plant is, I doubt not, a close congener of Clarionea carthamoides, DC, judging from the 

 figure given by Delessert, although the involucral scales are entirely destitute of teeth or cilia. The arid 

 leaves are very beautifully reticulated, obtuse, their edges beset with minute salient teeth. The radical leaves 

 are unknown : the larger cauline are four inches long and two or more in width, the narrowed base auriculate- 

 clasping: the uppermost are much smaller, oblong, and half-clasping by a broader base. Head an inch in 

 length and diameter. "Flowers red," deep purple in the dried specimens. Unripe achenia 4 lines long. 

 Pappus half an inch in length, rather shorter than the corolla. 

 ■y P. ? flatyphylla (sp. nov. ) : laevigata ; caule 2-pedali superne corymboso ; foliis coriaceis (infimis ignotis) 



amplis rotundati-obovatis sinu acuto amplexicaulibus pulcherrime reticulatis crebre arguteque spinuloso-denta- 

 tis, ramealibus subhastatis parce dentatis; capitulis corymbosis subfasciculatis ; involucri 12-flori turbinati 

 squamis pauciusculis subtriseriatis ciliolatis purpurascentibus vix acutis, extimis ovato-lanceolatis, intimis lnn- 

 ceolatis; receptaculo nudo ; acheniis glanduloso-puberulis ; pappo albo 2-3-seriali. — Cosiquiriachi, in the 

 Sierra Madre, west of Chihuahua, Dr. Wislizenus ; Sept. — Stem rigid. Cauline leaves three inches long 

 and almost as wide, strongly clasping by a short and narrowed deeply auriculate base, sharply serrate all 



