322 COMPOSITE. Perityle. 



Centr.-Am. Eot. ii. 210. P. Californica, Gray, Proc. Am. Acad. v. 159, not Beuth. P. Acmella, 

 Gray, PI. Fendl. 77, & Bot. Calif. 1. c., with P. Culifomn-a, mainly. Sjjilanthes Pseudo 

 Acmella, Hook. & Am. Bot. Beech. 150. Boltonia Dichetophora sp., Beuth. & Hook. Gen. 

 ii. 269. California, from Monterey? southward, Lay $ Collie, Coulter, Parish. (Mex.) 



Var. effusa. Very much branched from the annual root, paniculately floriferous : 

 leaves and heads smaller (the former half-inch or so, the latter only 2 lines high) : akeues 

 correspondingly small, narrowly obovate-oblong. Santa Catalina .Mountains, S. Arizona, 

 Prinyle. 



H- -H- Style-branches tipped with setaceous-filiform acute hispidulous appendages: rays with 

 narrow ligules, or wanting in one species: disk-corollas slender, with long and narrow throat: 

 akenes oblong: pappus of a rather conspicuous crown of squamellce and one long and delicate 

 awn: heads 5 lines high : bracts of the involucre linear: perhaps perennials or with liguescent 

 base, not improbably all of one species. 



P. leptoglossa, GRAY. Minutely puberulent or glabrate, not at all glandular: leaves 

 roundish-subcordate, coarsely and doubly creuate-dentate (half to three-fourths inch long): 

 rays oblong-linear, 4 lines long: akenes (a line long) linear-oblong, with comparatively short 

 hispid ciliation, the setiform awn shorter than the disk-corolla. PI. Feiidl. 77; Bot. Calif. 

 1. c. "California," Coulter, more probably from Arizona. 



P. Parryi, GRAY. Minutely pubescent and obscurely viscid: leaves reuiform-cordate, cre- 

 nately dentate and often lobed (the larger inch broad) : rays oblong, barely 2 lines long: 

 akenes (aline and a half long) oblong, strongly hirsute-ciliate: awn of the pappus nearly 

 equalling the disk-corolla. PI. Wright, ii. 106. R. border of Texas, or on the Mexican 

 side, in a canon of the Rio Grande below Presidio, Parry. Also mountains on the Texan 

 side, Havard. 



P. aglossa, GRAY, 1. c. Somewhat puberulent, obscurely viscid : leaves roundish, with 

 subcordate or truncate base, mostly 3-5-cleft and coarsely dentate (the larger 2 inches broad) : 

 bracts of the involucre very narrowly linear: rays none: akeues narrowly oblong, with 

 rather short and dense hirsute ciliation : awn of the pappus equalling the disk-corolla. 

 Cauou of the Rio Grande, with or near the preceding, Parry, 



136. PERiCOME, Gray. (Hep/, around, and KO'/^, a tuft of hairs; a 

 coma of long hairs all round the margin of the akenes.) PI. Wright, ii. 82 ; 

 Benth. & Hook. Gen. ii. 406. The latter authors indicate a Mexican radiate 

 species, of anomalous character, which they associate with the typical 



P. caudata, GRAY, 1. c. Rather tall widely branching perennial herb, strong-scented, very 

 minutely puberulent : leaves opposite, long-petioled, green and membranaceous, minutely 

 somewhat resinous-atomiferous, triangular-hastate (2 to 5 inches long), with sparingly cre- 

 nate-dentate or entire margins, caudately long-acuminate, as also in less degree are the basal 

 angles : heads numerous in terminal corymbiform cymes, half-inch or less high ; flowers 

 golden yellow, conspicuously longer than the glabrous involucre : akenes linear-oblong ; the 

 flat faces glabrous, the nerviform margins densely villous-bearded : pappus a crown of 

 hyaline squamellae which are more or less connate and fimbriate-lacerate at summit, the 

 fringe dissected into bristles or hairs somewhat simulating those of the margin of the akene ; 

 also sometimes a slender awn from one or both margins of the akene. Rocky canons, &c., 

 S. Colorado, New Mexico, and Arizona; first coll. by W right, Bigelow, &c. Fl. late summer 

 and autumn. 



137. EATONELLA, Gray. (Prof. Daniel Cady Eaton, author of 

 Ferns of N. America, the Composites of King's Expedition, &c., grandson of 

 Amos Eaton for whom was named the genus Eatonia.} Very floccose-lanate 

 annuals, of California and adjacent Nevada; with mostly alternate leaves and 

 small sessile heads of yellow or white flowers : fl. spring or early summer. 

 Bot. Calif, i. 379, as subgenus under Actinolepis ; Proc. Am. Acad. xix. 19. 



E. nivea, GRAY, 1. c. Depressed in a small tuft from a slender root, an inch or so high, 

 subcaulesceut, densely leafy, white with long and loose wool : leaves obovate-spatulate, entire, 



