﻿PLANTS FENDLERIANiE. 65 



f309. Eupatorium purpureu.m, Linn. One hundred miles west of Independence ; 

 August. (344.) 



much increased as to convert the awns into palece in a plant of Dr. Wislizenus's Mexican collection, which, 

 being also somewhat peculiar in the involucre and in the great size of the flowers, may be taken as the type 

 of a new genus, intermediate between Stevia and Palafoxia : — 



CARPHOCILETE, Nov. Gen. 



Capitulum 4-florum homogamum. Involucrum cylindricum; squamis 5-6, lanceolatis, parce striatis, 

 laxe imbricatis, exterioribus brevioribus. Receptaculum nudum. Corolla? tubulosa; hypocraterimorphae, invo- 

 lucrum duplo superantes, lobis oblongis glabris. Styli rami filiformes, glabri. Achenia gracilia, pentagona, 

 glabrata. Pappus biformis, e paleis 5 brevibus cuneato-truncatis hyalinis enerviis, et 5 alternis (ex angulis 

 achenii ortis) elongato-lanceolatis pinnato-striatis uninerviis, nervo crasso in aristam serrulatam corolla sub- 

 breviorem sensim exserente. — Herba spithamoea, glaberrima, e basi sufFruticosa multicaulis ; foliis oppositis 

 et in axillis fasciculatis, elongato-linearibus, angustis, integerrimis ; corymbo terminali oligocephalo ; pedun- 

 culis simplicibus nudis ; floribus ut videtur roseis, fere unciam longis. 

 ^ C. Wisxizeni. — Mountains west of Chihuahua, near Cosiquiriachi, Dr. Wislizenus. — The plant is not 

 glandular, nor sprinkled with resinous atoms, except a few on the tube of the corolla. The rigid leaves are 

 two inches or more in length, and one line wide. The scales of the involucre are rather lax, with somewhat 

 scarious and spreading acuminate tips. — The plants collected at Cosiquiriachi, in the Sierra Madre, are in 

 great part new. Among them is a well-marked Eupatorium, of De Candolle's series Eximbricala, viz. : — 



Eufatokium hedee^folium (sp. nov.): fruticosum ; ramis teretibus puberulis ; foliis oppositis longe 

 petiolatis subtriangulato-cordatis obtusissimis grosse crenato-dentatis membranaceis glabellis punctatis basi tri- 

 nervatis ; corymbis terminalibus subsessilibus densis ; capitulis breviter pedicellatis 10 — 12-fioris ; involucri 

 squamis 9 sequalibus oblongis obtusis puberis achenia ad angulos hirtella subscquantibus. — "Cosiquiriachi, 

 common : shrub 3 to 4 feet high : flowers white," Dr. Wislizemis, Leaves thin, bright green above, an inch 

 or an inch and a half in length and breadth ; the slender petiole an inch long. 



The Texan plant provisionally appended to Ageratum, under the name of A. ? (Micrageratum) Wrightii, 

 along with a second species recently detected in Northern Mexico, must be considered to constitute a new 

 genus, perhaps more nearly allied to Phalacroea, DC, viz. : — 



TRICHOCORONIS, Nov. Gen. 



Capitulum homogamum multiflorum. Involucrum disco brevius, e squamis Iaxis 12-18 subbiseriatis 

 ajqualibus membranaceo-herbaceis constans. Receptaculum conicum, nudum. Corolla pi. m. glandulosa ; 

 tubo angusto in faucem late campanulatam 5-dentatam abrupte dilatato. Antherae apice brevissime appendicu- 

 lata;. Styli rami exserti, lineares, complanati, obtusi. Achenia pentagona, secus angulos hispidula, pappo 

 brevissimo multisetuloso-coroniformi saepeque 5-aristulato superata. — Herba; subpaludosae vel aquaticae, basi 

 repentes ; caulibus adsurgentibus vel emersis, ramosis, viscoso-villosis ; foliis oppositis, seu ramealibus sparsis, 

 dentatis, sessilibus, pi. m. amplexicaulibus ; pedunculis gracilibus, nudis, solitariis vel corymbosis ; floribus 

 roseo-purpureis. 

 >/ 1. T. Wrightii : adscendens ; foliis Ianceolato-oblongis subserratis e basi lata subcordata arete sessili- 

 bus, infimis subspathulatis ; capitulis parvis (sesquilineam latis) plurimis paniculato-corymbosis ; squamis invo- 



9 



