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PLA^^T^ WRIGHTIAN.E. 



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ciliata. Pappus squamellato-coroniformis, fimbriato-lacerus, fimbrlis pilos Yalidos 

 acbenii simulantibus. — Hcrba glabella, ramosa, procera ; foliis oppositis summisve 

 subalternis triangulatis vel hastatis longissime acuminatis levissime resinoso-punc- 



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tatis haud glandnlosis ; capitulis cymosis ; floribus flavis. 



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Pericome caudata. — Among roclvs, on the sides of mountains, at the copper 

 mincs, Ncw Mexico ; Oct. (1195.) — " Plant 4 feet bigh, much branched, growing 

 in large bunchcs." Base of the stcm not gathered. Branches terete, striate, spar- 

 ingly puberulent. Leaves nearly all opposite, on long petioles, membranaceous, 3- 

 nerved at the base, dilated triangular, or the upper hastate, with the basal angles 

 "usually acuminate or more or less produced, often angulate-toothed below the mid- 

 dle, the apex produced into a very long tail-Uke acumination. The larger leaves in 

 the spccimcns are 3 inches broad at the nearly truncate base, and 4 inches long, in- 

 cluding the acumination, which is l-} to 2 inches in length ; the uppermost are nar- 

 rower, but equally caudate. They are spanngly puberulent, especially on the veins, 

 sparsely sprinkled or dotted with minute resinous atoms, like a Eupatorium; but 

 not at all pellucid-glandular after the mode of TagetineeB. Heads in terminal 

 cymes or corymbs, on slendcr pedicels, half an inch long. Involucre not bracteate, 

 about 3 lincs long ; the scales very narrowly linear, onc-nerved, their narrowly sca- 

 rious marglns lightly but decidedly coalescent to near the apex, the free tips lanu- 

 ginous-ciliate. Corolla with the elongated and exserted anthers 3 lines long, yellow ; 

 the slendcr tube very viscous-glandular, about the length of the cylindraceous 

 throat and short limb. Branches of the style convex externally, slightly flattened, 

 the rathcr indistinct stigmatic lines extending to very near the summit, and there 

 insensibly vanishing, where a fine pubescence begins ; the same pubescence extends 

 down the back considerably lower, and disappears insensibly. Achenia 2 lines 

 long, much compressed, margined all round v/ith a strong callous nerve, which 

 bears a dense and conspicuous beard of hispid hairs. Pappus rather shorter than 

 the beard of tlie achenium, composed of numerous setiform squamella? which are 

 irregularly united below into a hyaline lacerate crown. There is no trace of any 

 awns. — A genus of even more doubtful position in the family than Perityle, BentL, 

 which with Laphamia, I have continued to append to the Asteroidege. It agrees 

 with Perityle in the achenia and the (disk) corollas, in the prevailingly opposite 

 leaves, and very nearly in the style ; but diffbrs in the absence of a ray, as well as 

 of awns to the pappus, and in the coalescence of the strictly uniserial scales of the 

 involucre. The style would almost do for the Eupatoriace£e ; but the stigmatic 

 lines are continucd almost to the tip ; and the flowers are yellow. The involucre 

 is like that of Hymenatherum, and the style is exactly that of a Tagetes ; but 

 there are no large pellucid glands, and the achenia are flat. Notwithstanding, I 

 should append the genus to Tagetinea?, were it not for the many points of resem- 

 blance to Perityle. 



Perityle coronopifolia (sp. nov.) : multicaulis e caudice suffrutescente, humilis, 

 pnberula;^ foliis parvis, inferioribus oppositis trisectis segmentis tripartitis vel pin- 

 natipartitis, superioribus alternis pinnato-5 - 7-partitis lobis linearibus, summis sicpe 

 mtegris; receptaculo subconvexo; ligulis oblongis albis ; appendicibus styli fl. 



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