268 COMPOSITE. JVyethia. 



++ ++ Glabrous, but scabridous and balsamic-viscid : leaves ovate, abruptly petioled, coriaceous. 



W. reticulata, Greene. Habit of W ■ ovata, only puberulent-hispidulous without tomen. 

 turn, leafy up to the corymbosely disposed heads : cauline leaves ovate or subcordate, short 

 petioled (4 down to 2 inches long), 3-5-plinerved, and with veins and veinlets much reticu- 

 lated, shining ; those of flowering branches small, oblong, 3-nerved : heads hemispherical, 

 little over half -inch high : bracts of involucre oblong-linear, obtuse, short ; outer foliaceous 

 and loose, sometimes one or two enlarged : rays apparently few and rather small : akenes 

 compressed-quadrangular, glabrous (barely 3 lines long) : pappus an extremely short erose- 

 denticulate crown; no awn. — Bull. Calif. Acad. i. 9. — Banks of Sweetwater Creek, El 

 Dorado Co., California, Mrs. Curran. 

 ++++++ Tomentose or woolly, but sometimes glabrate in age : leaves all petioled and becoming 



coriaceous, ample, even the cauline 4 to 7 inches long. 

 = Involucre hemispherical, of numerous broadly lanceolate bracts, not surpassing the disk : rays 

 numerous, 20 to 24. 



"W. ovata, Tore. & Gray. Canescent with a soft not floccose tomentum, 2 or 3 feet high 

 from running rootstocks, commonly branching : leaves ovate, the cauline subcordate and 

 with acute apex, somewhat triplinerved ; veinlets not much reticulated : pappus a chaffy, 

 several-toothed crown. — Emory Bep. 143 (1848, wholly overlooked); Gray, Proc. Am. 

 Acad. vii. 357, & Bot. Calif. 1. c. — California, on the western side of the Sierra Nevada. 



== = Involucre narrower, campanulate; the outer bracts larger than the inner and more or less 

 surpassing the disk : rays fewer : leaves at length firm-coriaceous and the veinlets conspicuously 

 reticulated. 



"W. mollis, Gray. White with floccose wool when young, more or less glabrate in age, 

 1 to 3 feet high, bearing solitary or few heads : leaves oblong and ovate, with either rounded 

 or truncate or cuneate base : rays 10 to 15, over an inch long : akenes minutely pubescent at 

 summit : pappus a truncate chaffy crown, and 2 or in the ray 3 to 5 subulate awns. — Proc. 

 Am. Acad. vi. 544, viii, 655, &c. — Sierra Nevada, especially on the eastern side, from Sierra 

 VaDey to Virginia City, Nevada, and westward to the Yosemite ; first coll. by Anderson. 



W. coriaoea, Gray. Sericeous-tomentose, stout, 1 to 3 feet high: leaves rigid, broadly 

 ovate or oval, obtuse or apiculate, somewhat triplinerved, even the upper cauline (5 to 7 

 inches long) seldom longer than their petiole : rays 5 to 9, hardly surpassing the involucre : 

 pappus a short obtusely 4-6-cleft crown. — Proc. Am. Acad. xi. 77, & Bot. Calif, i. 616. — 

 San Diego Co., California, on the Mesa Grande, &c, Palmer, Parish. 



++ -H- ++ -H- Hirsutely more or less pubescent, often somewhat balsamic-glutinous: leaves 

 elongated-lanceolate, tapering to both ends, or the upper and sessile cauline broader: bracts 

 of the involucre mostly foliaceous or herbaceous, lanceolate or broader, equalling the disk. 



W. angustifolia, Nutt. A span to 2 feet high, and the radical leaves about as long, 

 these occasionally denticulate or serrate, often undulate : involucre fully inch high, loose or 

 spreading : head solitary : rays mostly numerous, inch and a half long : pappus a short and 

 chaffy jfimbriolate-cleft crown, and one or two or in the ray 3 or 4 elongated subulate awns, 

 one of them about the length of the akene. — Gray, Proc. Am. Acad. viii. 655, & Bot. Calif. 

 1. c. W. angustifolia & W. robusta, Nutt. 1. c. ; Torr. & Gray, PL ii. 299. Helianthus 

 longifolius, Hook. PI. i. 312 ; Hook. & Arn. Bot. Beech. 353. H. Hookerianus, DC. Prodr. 

 Alarconia angustifolia, DC. Prodr. v. 537. — Plains and hills, commonly in moist ground, 

 Washington Terr, to Monterey Bay, California. 



W. Arizonica, Gray. A foot high, bearing a single or few and smaller heads : leaves 

 oblong-lanceolate: involucre of fewer and more' erect bracts: rays 8 to 12 : pappus a very 

 narrow crown, extended into 3 or 4 stout subulate teeth, or into one or two short awns. — 

 Proc. Am. Acad. viii. 655 ; Bothrock in Wheeler Rep. vi. 161, t. 9 ; Meehan, Nat. Flowers, 

 ser. 2, ii. t. 37. — Near streams and springs, S. Colorado to S. Utah and Arizona, Palmer, 

 Bishop, Siler, Rothroch, &c. 



++++«•++ ++ Hispidulous, very scabrous, narrow-leaved: involucre more imbricated, squarrose. 

 W. scabra, Hook. A foot or two high (root unknown), rigid : cauline leaves linear, thick, 

 4 to 6 inches long, half-inch wide, sessile, attenuate-acute , the few veins confluent into 

 lateral undulate nerves: involucre nearly hemispherical; its bracts imbricated in 3 or 4 

 series, all the outer with a coriaceous ovate-oblong appressed base, which is acuminate into 

 a longer subulate filiform spreading very hispid-scabrous appendage : rays several, half-inch 



