﻿66 PLANTS FENDLERIANvE. 



f310. E. ageratoides, Linn. One hundred miles west of Independence. (345.) 

 + 311. E. perfoliatum, Linn. Near Fort Leavenworth ; September. (337.) 

 312. Dieteria coronopifolia, Null. ; Ton: fr Gray, Fl. 2. p. 101. On the Ar- 

 kansas, and between Santa Fe and Pecos. (352.) — In cultivation, from Texan seeds, 

 this proves to be a very showy annual. The heads, with the expanded bright violet- 

 colored rays, are an inch and a half in diameter ; the disk golden-yellow. The pappus 

 is often white. 



f313. Aster lsvis, Linn. ; Ton. fr Gray, I. c. Valley of Santa Fe Creek, at the 



foot of mountains, nine miles above the town. (362.) 



f314. A. azureus, Lindl.; Torr.fr Gray, I.e. Prairies on the Kansas River. (366.) 



1 315. A. sagitt.5:folius, Willd. ; Torr. 8f Gray, I. c. Council Grove, &c. (357.) 



316. A. sericeus, Vent. Council Grove, &c. ; September. (355.) 



■S f 317. A. Fendleri (sp. nov.) : caulibus spithamaeis e caudice sublignosa phiribus 



adscendentibus rigidis parce hispidulis ; ramis corymboso-panitulatis monocephalis ; foliis 



sessilibus rigidis coriaceis parvis linearibus mucromilatis integerrimis glabris uninerviis 



marginibus hispido-ciliatis, infimis subspathulatis, ramealibus brevissimis ; involucri cam- 



panulati squamis 3-seriatis lineari-oblongis glanduloso-scabrellis mucromilatis, exterioribus 



herbaceis obtusis laxis, interioribus acutis paulo longioribus ; acheniis pubescentibus. — 



On the Ocate Creek and the Rio Colorado (Upper Canadian) ; Aug. (372.) — A low 



species, of the group Ericoidei, or perhaps Amelli, with much the aspect of Diplopappus 



lucri lineari-oblongis acutiusculis ; tubo corollae fauce breviore ; pappo e setulis plurimis subcoroniformi-con- 

 cretis et saepe 5-aristellatis. — Ageratcm ? (Micrageratum) Wrightii, Torr. fy Gray, ined. in Proceed. 

 Atner. Acad. 1. p. 46. — Low places in the prairies along the Colorado River above Columbus, Texas, Mr. 

 Charles Wright. — A span to a foot high ; the stems very leafy, much branched. Leaves 6 to 8 lines in 

 length. 

 / 2. T. bivt/laris (sp. nov.) : fluitans ; ramis emersis ; foliis obovato-spalhulatis sinuato-incisis grosse-den- 

 tatisve basibus longe angustatis connato-amplexicaulibus; pedunculis solitariis vel binis monocephalis; capitulo 

 majusculo (3-4 I'm. lato) ; squamis involucri circ. 12 ovalibus obtusissimis ; tubo corolla? gracili faucem sub- 

 hemisphaericam oequante ; pappo exaristato. — In springs and small flowing streams, Monterey and Cerralbo, 

 Dr. Gregg, Dr. Edwards. On the Mexican side of the Rio Grande above Presidio, Mr. Wright. — A near 

 ally of the preceding, but truly aquatic ; the stems somewhat succulent. Leaves one or two inches long, with 

 a few coarse and obtuse teeth. The flowers are said to be yellow by Dr. Gregg, but they do not appear to 

 be so in the specimens ; and Mr. Wright pronounces them to be purple. The pappus consists of numerous 

 minute setae, rather than squamellas, which are more or less confluent or coroniform-united at the base, just 

 as in T. Wrightii, but there is no trace of any stouter bristles or awns. These plants certainly do not belong 

 to Ageratum ; but if the divisions Alomieas and Agerateas of De Candolle are to be combined, this genus 

 should stand next to Phalacraea, DC. 



