PLANTH FENDLERIANA, 65 
+309. Euparorium purpureum, Linn. One hundred miles west of Independence ; 
August. (344.) 
much increased as to convert the awns into palee ina 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 
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Capitulum 4-florum homogamum. Involucrum cylindricum; squamis 5-6, lanceolatis, parce striatis, 
of a new genus, intermediate between Stevia and Palafoxia: — 
CARPHOCH/ETE, Nov. Gen. 
laxe imbricatis, exterioribus brevioribus. Receptaculum nudum. Corolle tubulose hypocraterimorphe, 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, neryo crasso in aristam serrulatam corolla sub- 
breviorem sensim exserente. — Herba spithamea, glaberrima, e basi suffruticosa multicaulis; foliis oppositis 
et in axillis fasciculatis, elongato-linearibus, angustis, integerrimis ; corymbo terminali atesccpialo | pedun- 
culis simplicibus nudis; floribus ut videtur roseis, fere unciam longis. 
C, Wistizen1. — 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 Eximbricata, viz. : — 
Evparorium HEDEREFOLIUM (sp. noy.): 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-floris; involucri 
squamis 9 equalibus oblongis obtwsis puberis achenia ad angulos hirtella subeequantibus. — “ Cosiquiriachi, 
common: shrub 3 to 4 feet high: flowers white,” Dr. Wislizenus. 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 Phalacrea, DC., viz. : — 
TRICHOCORONIS, Nov. Gen. 
Capitulum homogamum multiflorum. Involucrum disco brevius, e squamis laxis 12-18 subbiseriatis 
wequalibus membranaceo-herbaceis constans. Receptaculum conicum, nudum. Corolla pl. m. glandulosa ; 
tubo angusto in faucem late campanulatam 5-dentatam abrupte dilatato. Anthere apice brevissime appendicu- 
late. Styli rami exserti, lineares, complanati, obtusi. Achenia pentagona, secus angulos hispidula, pappo 
brevissimo multisetuloso-coroniformi szepeque 5-aristulato superata. —Herbe subpaludose vel aquatic, basi 
repentes ; caulibus adsurgentibus vel emersis, ramosis, viscoso-villosis ; foliis oppositis, seu ramealibus sparsis, 
dentatis, sessilibus, pl. m. amplexicaulibus ; pedunculis gracilibus, nudis, solitariis vel corymbosis; floribus 
roseo-purpureis. 
1. T. Wricurm: adscendens ; foliis lanceolato-oblongis subserratis e basi lata subcordata arcte sessili- 
bus, infimis subspathulatis; capitulis parvis (sesquilineam latis) plurimis paniculato-corymbosis ; squamis inyo- 
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