A.^ier. COMPOSITJE. 2ril 



•i-i- ++ Head (broad and large for the plant) solitary on the simple and scapifonn few- and small- 

 leaved sti-ms, which with the cluster of narrow radical leaves rise from a thicliened caudex : 

 involucral bract? linear, acutish, rather loose, often tumentnln-e when voudl': the plants other- 

 wi?e glabrous and smooth: rays numerous, purple or violet: style-appendages slender and 

 acute, usually more than twice the length of the stigniatic portion: akenes narrow: pappus 

 strongly denticulate. ■ 



' A. Andersoni, Gkay. Scapiform stem- a =pan to a foot lii^h, erect ; radical leaves lii'U- 

 late-linear or slisrlitly broader upward, gramineou-, mostly acute 12 to 10 inche- long-. 2 or 3 

 lines wide), ner\-u-e when drj- ; npper cauliue reduced to scattered subulate bract- : bead 

 broad (fuUy half-inch high and wnde) : style appendases filiform: akeriL- oblong-linear, soft- 

 villons. — Proc. Am. Acad. vii. 3.52. & Bot. Calif, i. 325. Engeron ^4/<f/.-r,>'.„,,, Gray, 1. c, vi. 

 .540. — \Vet subalplne meadows, along the whole length of the .Sierra Nevada, California and 

 borders of Nevada; first coU. by An/Jur.son. 



— A. pulch.ellus, Eatos. ^La])iform stems ^prealing and a^snrgent. 2 to 4 inches long: 

 radical leaves from liiigulate-gpatnlate to narrowly linear an inch or two long", "litn-e. nerve- 

 less, in the larger western form often 3 or 4 Hues wide near apex, and heail- a* large as 

 those of A. Anilir~:,,n': in the smaller more eiistern form only a line wide and Lea'ls 

 smaller: style-appendage^ linear-subulate: akenes linear, stri.ite. glabrate, at lea-st below. — 

 Bot. King Exp. 143, t. 16, the small and slender form, published in IsTI. A. alpigenvs, 

 Gray, Proc. Am. Acad. ™i. 389 (1>7:^ i. the larger form fir-t collected by Tolmie, and pub- 

 li-lied as Aplopappus alpigenus, Torr. & Gray, Fl. ii. 241. the rays suppci=ed to be yellow, 

 whereas they are violet. — On the higher motmtains, viz. Ranier, Paddo, and Hood, of 

 Washington Terr, and Oregon, redisc"\ere'l by II "fK IIo'"-f'll, ><iksdorf^ ilrs. Barratt, and 

 the smaller form on Blue Motmtains, E. (Jregon, CVs" /.-. those of X. Xevada, Wut-on, also 

 Eocky Mountains of Wyoming and Montana, Ha/den, Parr(/, ■•>cr,'biier. 



4— -i— Ambiguous sjiecies. with small heads (2 or 3 lines high) few or solitary, terminatin;r very 

 slender leafy stems or branches; and leave- small and slender: style-appendagc-s (a ate— ubulate, 

 about the lengtli of the s igraatic portion : akene- compressed, hispidulous-pubescent, i—J-inrved: 

 pappus rather scanty and fragile (therefore near to Eriyeron, but with the style-tips of Adtr): 

 small and many-stemmed from a somewhat lignerai? caudex. nearly glabrous. 

 A. "Watsoni, Geat. C espitose, 2 to 4 inche- high ; the filiform stems mostly monocepha- 

 lous : leaves fUiform-linear, or the lower and larger (inch long) with spatulate-dUated apex ; 

 upper verr small: bratt? of the involucre lanceolate, acute, commonly purplish-tiuged, 2-3- 

 seriate: ravs white or purpilish : sf. leajipemlacre? ovate or triangtilar and acuminate-sub- 

 ulate. — J . y/ac/afc, in part, Eaton, Bot. King Exp. 142 (no. .dU'ji, al-o mixed with speci- 

 mens of A. pulchellvs. — Mountains of X. Xevada, Wahsatch Motmtains at the head of 

 American Fork; fir?t coll. by ir./ison. 

 A. axenarioides E.vtox. Stems tufted on a woody caudex, almost filiform, 6 to 9 inches 

 hio-h, sparinslv branched above, or bearing 2 to 4 heads : leaves filiform-linear, even the lower 

 (inch or nvo lon^'l only obscurely dilated upward: uppermoist reduced te. minute subulate 

 ' bracts ; bracts of the involucre linear, rather rigid, unequal and 3-seriatr- : rays white or 

 bluish: stvle-appendages ovate-ubtUate, merely acute. — Proc. Am. Acad. viii. 64 7. Eri- 

 geroH stenopi, ilh,,,,. Eaton, Bot. ICing Exp. 1.52. t. 17, not Gray.— Wahsatch Mountains, 

 above Cottonwood Canon, 8.000-9.000 feet, Wati'.n. 



# # * * # Involucre (except in J. TJaiiCT/orits) well imbricated and with short outer bracts d's- 

 posed to pass into scale-like bracts of the pedimcle: herbs or shruhhj plants, maritime or of 

 alkaline soil; the leaver more or le^s fleshy or reduced to scales. — § OxytnpoUam in part (the 

 perennial species), Torr. & Gray. 

 ■<- Heads rather large (about half-inch \ivs\i\ with showy violet rays : involucre well imbricated 

 in -c-veral ranks : leave- long and narrow, entire, moderately fle-hy : ver>- aiabrous herb.- of the 

 Atlantic c-oa=t. (Here also A. imbricatuf. Walp. Rep. ii. 574. Tnpolium uabr.mtum, Xutt., and 

 the true T. conspicuum. Lindl. in DC , of Chili; see Proc. Am. Acad. xvii. 210.) 

 A. Chapmani, Toee. & Ge.vt. Stern simple and slender, 2 or 3 feet high, from a thick- 

 'i=li caudex, bearing a few simple slender raonocephalous branches at summit : leaves ngid 

 when drv, linear, or radical spatulate-linear Ithe^e 5 to 9 inches long, including the le.ng at- 

 tenuate base), obscurelv nerved when dry ; canline becoming subulate-fiUform and erect, and 

 reduced on the branches to minute bracts: involucre campanulate, equalling the di-k ; its 

 rather firm bracts mostlv oblong-lanceolate, acute or mucronate : style-appendages ovate- 



