Aplopapjyus. COMPOSITE. 129 



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

 and Colorado; first coll. by Dnimmond. 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 l)earing 3 to 1.5 heads ; these when few subcorymbose, when more numerous raccmosely 

 or paniculately 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 tliem longer and more 

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

 foregoing species. — Eaton, Bot. King Exp. IGO. Donia la»ceo/ata, Hook. 1. c. Homopcippus 

 (Ac.tmaphoria) mu/tifloriis, Nutt. I.e. — Plains of Saskatchewan to the borders of Brit. 

 Columbia, Idaho, and N. Nevada; first coll. hy Drummond. 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, dis])osed 

 to be racemose, and involucre closer. — Saskatchewan to Wyoming, Utah, and Colorado. 



Var. tenuicaulis (A. tenuicanln;, Eaton, 1. 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 higli : 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, Ciisick. 



•i— H— Perennial herbs from a lignescent midticipital caudex or suffruticose base, with slender and 

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

 binate or obovate (4 or 5 hues high) ; its bracts well iinlnicated, appressed, charlaceo-coriaceous, 

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

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

 guished from the Ericamcria section, to which there is an approach). 



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

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

 few heads : leaves narrowly linear, or the lowest obscurely spatulate (about 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 ov-ate-triangular, half the length of the stigmatic 

 portion : pappus scanty, somewhat fulvous. — Am. Nat. viii. 213. Slenolus midlicauhs, Nutt. 

 Trans. Am. Phil. Soc. 1. c. 335 ; Torr. & Gray, FI. ii. 238. — On rocks. Pocky Mountains of 

 N. W. Wyoming, Nultall, Geyer, Parry. 



A. Hallii, Gray. A foot or two high, paniculately branched from a suffrutescent 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 tlie mar- 

 gins) ; midrib prominent beneath and commonly some lateral A^eins : heads paniculate, 

 terminating short branchlets or sometimes rather congested : involucral bracts broadish- 

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

 mucronate-acute : rays about 10 : st^de-appendages lanceolate, rather obtuse, al)Out tlie 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 AVashington Terr., Hall, Howell, Suhsdorf, Prinyte. 



H— -I— -1— Annual or perennial herbs, branching, leaf}': leaves not rigid, spiiiulosely dentate or 

 pinnatifid, the teeth and tips commonh- bristle-tipped: heads middle-sized or small: iavolucre 

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

 ous, mostly numerous : pappus rather rigid, its bristles very unequal in size and strength. 

 (Analogue of Machmranthera in Aster.) — § Blejiharodon, DC, cxcl. spec. 



++ Akenes short-turbiiiate, not compressed, obscurely 5-10-nerved under tlie canescent villosity: 

 st^de-apperidages short and broad, ovate or deltoid: rays 18 to 25, deep golden yellow: leaves 

 not deeph' cleft. 



A. aureus, Gray. Perennial? and branched from the base, at first lightly lannginous, 

 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- 



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