Perityle. COMPOSITE. 321 



outline, pedatelv cleft or parted and dissected into short linear lobes: heads subses^ile, 3 or 

 4 lines high : involucre campanulate, of numerous narrow linear bracts : ravs none : 'disk- 

 flowers about 20 (perhaps white) : akenes linear-oblong, minutelv cinereous-liirsute, and the 

 cartilaginous mai-gius somewliat more hirsute; a short scabrous awn from one augle, of 

 nearly half its length, or this wanting: style-branches slender-subulate, not short and ob- 

 tuse, as said in Proc. Am. Acad. ix. 195. — Laphamia dissecta, Torr. in PI. Wright, ii. SI. 

 — Kocks at Presidio del Xorte on the Kio Graude, between Texas and Mexico. 



§ -2. Genume species : pappus a crown of hyaline lacerate squamella?, either 

 somewhat united at base or distinct, rarely obsolete. 



* Suffruticulose perennial, with commonly dissected leaves: rays and perhaps disk-flowers also 

 wbitu. 



P. COronopifolia, Gk.it. Cinereous-puberulent, many-stemmed from the woody base, a 

 foot or less high, slemler, leafy : leaves small, somewhat pedately or pinnately once or twice 

 divided or parted into linear or narrow spatulate lobes, or some coarser and mereh- trifid : 

 heads dispusc-d to be paniculate, 3 lines high: rays !is long, broadly oblong, coarsely 3-toothed 

 at apex : style-tips slender-subulate : akenes narrowly oblong, glabrate on the faces, densely 

 hirsute-ciliate : awns 2, little shorter than the corolla. — PI. Wright, ii. Si, i Bot. Jlex. 

 Bound. 82. — Eocks on mountain-sides, Xew Me.xico and Arizona; first coll. by Wright. 

 Varies with roundish merely incisely-cleft leaves. 



* * Herbaceous, chiefly and perhaps all with annual root, loosely branching, and bearing 

 scattered peduncidate heads : leaves often palmately cleft. 



-t— .\kenes thin-margined, hispidulous or hirsutcly ciliate: crown of pappus minute or obsolete 

 and awns wanting: style-appendages short, acute. (Perhaps extra-limital.) 

 P. Fitchii, Tore. "\'iscid-pubescent : leaves and involucre nearly of the following species : 

 akenes unkno-svn : ovaries apparently destitute of pappus. — Pacif. R. Rep. iv. 100. — ' Cali- 

 fornia, Bev. A. Fitch," in herb. Torr. Probably from the islands : imperfect, seemingly 

 winter specimens. (To tliis apparently is to be joined var. 'Pxi.^vE^i, P. Emoryi of coll. 

 Palmer, no. 44, which has the whole aspect and foliage of P. Caliform'ca, var. nudn, but akenes 

 narrowly oblong, somewhat falcately oblique, with a short pappus of numerous squameUse 

 united into an erose-denticulate crown- — Guadalupe Island off Lower California.) 



•1— -i— Akenes callou'-margined and densely ciliate with long beard: pappus-crown more con- 

 spicuous: awns rarely wanting. 



■H- Style-branches with short and obtuse or acute minutely hirsute appendages; rays 6 to 12. 

 short, the oblong or broader ligule little longer than the tube, perhaps always white. 



P. Calif Ornica, Bextr. Somewhat hirsutely pubescent, also viscid and glandular: leaves 

 broadly ovate or roundish-cordate, incisely lobed or more deeply 3-5-cleft and the lohes 

 coarsely dentate : heads fully 3 or 4 lines high and broad : bracts of the involucre narrowly 

 oblong : akenes oblong, densely hispid-villous on the margins, crowned with conspicuous 

 squamellte, and with a single more or less barbellate a^vn of about the length of the akene. ^ 

 Bot. Sulph. 23, t. 1.5. P. Emoriji, Torr. in Emury Rep. (1S48), 142 : Gray, Bot Calif, i. 397, 

 form with usually more rounded lobed and incised leaves. — Desert-region of the Jlohave 

 and Gila, S. E. California and W. Arizona. (Lower California, Guadalupe Island, &c. 

 Kow found by many collectors.) 



Var. nuda, Ge.w, Bot. Calif. I.e., under P. Emoriji. Awn of the pappus none: 



otherwise as in the P. Emori/i form. — P. nuda, Torr. Pacif. R. Eep. iv. 100. — With the 

 aristate form and commoner. (Lower Calif.) 



P. plumigera, Grat. Flowering branches only seen, small-leaved, viscid-glandular : heads 

 much smaller than in the preceding (narrowish. barely 3 lines high) : akenes oval-oblong, the 

 margins verv denselv long-villons : awn siilitarv, longer tlian the akene, sparsely barbellate- 

 hispid. — PI. Fendl. 1. c. — "California," probably Arizona, Coulter. Possibly a late-flower- 

 ing form of the preceding. 



P. microglossa, Bexth. Merely puberulent, obscurely glandular above : leaves broadly 

 ovate with subcordate or truncate base, or upper somewhat hastate, incisely dentate, often 

 3-5-lobed : heads 3 lines high : akenes obovate or obovate-oblong, ivith broad summit, villous- 

 ciliate margins, and a pair of delicate awns, which barely equal the breadth of the atene and 

 are twice or thrice the length of the crown of squamell*. — Bot. Sulph. 119; Hemsl. BioL 



21 



