82 PLANTiE WRIGHTIAN^. TI. 



ciliata. Pappus squamellato-coroniformis, fimbriato-lacerus, fimbriis pilos valiclos 

 achenii simulantibus. — Ilerba glabella, rainosa, jirocera ; foliis oppositis summisve 

 subalternis triangulatis vel hastatis longissime acuminatis levissime resinoso-punc- 

 tatis hand glandulosis ; capitulis cymosis ; floribus flavis. 



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

 mines, New Mexico ; Oct. (1195.) — " Plant 4 feet high, much branched, growing 

 in large bunches." Base of the stem 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-like acumination. The larger leaves in 

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

 cluding the acumination, which is 1^ to 2 inches in length ; the uppermost are nar- 

 rower, but equally caudate. They are sparingly 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 Tagetinese. Heads in terminal 

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

 about 3 lines long ; the scales very narrowly linear, one-nerved, their narrowly sca- 

 rious margins 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 slender tube very viscous-glandular, about the length of the cylindraceous 

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

 the rather 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 with a strong callous nerve, which 

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

 the beard of the achenium, composed of numerous setiform squamellse 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 Asteroideae. It agrees 

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

 leaves, and very nearly in the style ; but difl'ers 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 Eupatoriaceae ; but the stigmatic 

 lines are continued almost to the tip ; and the floAvers 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 Tagetinese, were it not for the many points of resem- 

 blance to Perityle. 



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

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

 natipartitis, superioribus alternis pinnato-5 - 7-partitis lobis linearibus, summis sa?pe 

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



