Aplopappus. COMPOSITE. 129 



a woolly form. Plains of the Saskatchewan to Montana, and along the mountains to Utah 

 and Colorado ; first coll. by DrnmmomL Varies much in size, especially of the head ; in the 

 larger forms much broader than high, and very many-flowered. 



A. lanceolatus, TORR. & GRAY, 1. c. Habit of the preceding: stems generally more leafy 

 and bearing 3 to 15 heads; those when few subcorymbose, when more numerous racemose] v 

 or pauiculately disposed : involucre in the type fully half-inch high; its bracts rather closely 

 imbricated in 3 or 4 unequal series, lanceolate, acutish, with short green tips and whitish 

 coriaceous base; outer successively shorter, occasionally some of them longer and more 

 herbaceous. Such forms, when heads are very few or solitary, effect a transition to the 

 foregoing species. Eaton, Bot. King Exp. 160. Don id lancen/aia, Hook. 1. c. llomopappus 

 (Actmaphorid) multiflorus, Nutt. I.e. Plains of Saskatchewan to the borders of Brit. 

 Columbia, Idaho, and N. Nevada; first coll. by Drummund. The more robust form, with 

 few and large heads, usually corymbosely disposed, and rays 30 or 40 in number and half- 

 inch long, passes freely into 



Var. Vaseyi, PARRY in Eaton, 1. c., with heads a third or quite half smaller, disposed 

 to be racemose, and involucre closer. Saskatchewan to Wyoming, Utah, an.! ( 'olorado. 



Var. tenuicaulis (A. temncaulis, Eaton, I. c.), is an extreme very slender and marked 

 variety, sometimes a foot high and bearing several racemose heads, sometimes more de- 

 pauperate and only a span high : heads only 3 or 4 lines high : rays correspondingly reduced : 

 involucre close, with short green tips. Alkaline meadows, Nevada and Utah, first coll. by 

 Watson. Apparently a form with laciniate leaves, in alkaline soil, E. Oregon, Cusick. 



-* -I Perennial herbs from a lignescent muiticipital caudex or suffruticose base, with slender and 

 brandling stems, leafy up to the small heads: leaves all narrow and quite entire: involucre tur- 

 binate or obovate (4 or 5 lines high) ; its bracts well imbricated, apprcssrd, charlaceo-coriaceous, 

 with short and abrupt acute green tips, or these wanting in some: rays 7 to 10, with oblong 

 ligules: disk-flowers not numerous: style-appendages ovate to narrow-lanceolate (thus distin- 

 guished from the />/<///<" section, to which there is an approach). 



A. multicaulis, QUAY. Very dwarf, tufted, tomentulose, but early glabrate and smooth : 

 stems 1 to 3 indies high from a ligneous caudex, simple or forked, bearing 3 or 4 leaves and 

 few heads : leaves narrowly linear, or the lowest obscnrelv spatnlate (ahout inch long) : bracts 

 of the involucre large and rather few (9 to 14), from ovate to oblong-lanceolate, cuspidate- 

 acuminate, marked with a green spot below the slender cusp, or the outermost with a larger 

 foliaceous tip: rays few: style-appendages ovate-triangular, half the length of the stigmatic 

 portion : pappus scanty, somewhat fulvous. Am. Nat. viii. 213. Stciwt/ts um/in-ntilis, Nutt. 

 Trans. Am. Phil. Soc. 1. c. 335 ; Torr. & Gray, El. ii. 238. On rocks, Rocky Mountains of 

 N. W. Wyoming, Nnttal/, Geyer, Parry. 



A. Hallii, GRAY. A foot or two high, paniculately branched from a snffrutesceut or even 

 more woody base, glabrous, very leafy: leaves lanceolate or linear, short (larger over inch 

 long, 3 lines wide and spatulate-lanceolate), rather rigid, mostly scabrous (at least the mar- 

 gins) ; midrib prominent beneath and commonly some lateral veins: heads paniculate, 

 terminating short brauchlets or sometimes rather congested: involncral bracts broadish- 

 linear, imbricated in several ranks, the outer successively shorter, the short tips merely 

 mucrouate-acute : rays about 10 : style-appendages lanceolate, rather <>l>tu>e, about the length 

 of stigmatic portion : pappus barely sordid. Proc. Am. Acad. viii. 389, first described from 

 mere branchlets, and these not well developed. Base of the Cascade Mountains, Oregon 

 and Washington Terr., ////, Howell, Suksdorf, Prinyle. 



-I H -| Annual or perennial herbs, branching, leafy: leaves not rigid, spinulosely dentate or 

 pinnatifid, the teeth and tips commonly bristle-tipped: heads middle-sized or small: involucre 

 hemispherical, of well-imbricated narrow bracts, the outer successively shorter : rays conspicu- 

 ous, mostly numerous: pappus rather rigid, its bristles very unequal m si/.e and strength. 

 (Analogue of Machce-ranthera in Aster.) Blepharodon, DC., exel. spec. 



-H- Akenes short-tnrbinate, not compressed, obscurely 5-1 0-nerved under the cam-scent villosity: 

 style-appendages short and broad, ovate or deltoid: rays 18 to 25, deep golden yellow: leaves 

 not deeply cleft. 



A. aureus, GRAY. Perennial? and branched from the base, at first lightly humginous, 

 minutely scabrous-glandular, a span or two high: leaves all narrowly linear, sparingly pin- 

 natifid-dentate, at least toward the base (an inch or less long) : heads 4 lines high : bracts of 

 the involucre linear-oblong, mostly obtuse and muticous ; the outer ones with short deltoid- 



9 



