Aster. COiirOSIT^, 205 



striate: receptacle alveolate, the alveoli toothed or lacerate: stvle-appendages 

 from linear-lanceolate to filiform-subulate: pajipus copious and simple, of rather 

 rigid unequal bribtles : leafy-stemmed and branching biennials (sometimes more 

 enduring, but no rootstocks, stolons or buds below the crown), or occasionallv 

 annuals (W. X. American and ilexican) : the showy heads terminating the 

 branches: involucre either canescent or somewhat viscid or glandular: leaves 

 from sparingly dentate to bipinnately parted, the teeth or lobes apt to be bristle- 

 tipped. — Ciray. Proc. Am. Acad. viii. 047, & Bot. Calif, i. .'!22. Machceranthero, 

 Nees, Ast. l'24 ; Gray, PI. Wright, i. 90. UleU-rla, Xutt. Trans. Am. Phil. Soc. 

 vii. 300; Torr. & Gray, Fl. ii. '.I'.i. 



* Anomalous, seemingly perennial and multicipital, but otherwise of this section. 

 A. Coloradoensis, Gray, a span or le.?s high, forming a tuft of short few-leaved stems 

 on a strong tap root, canescently puLesteut, not at all glandular: leaves >].atulate or ob- 

 lanceolate (about an inch long), coarsely dentate, the teeth tipped with cousjpicu.jus bristles: 

 heads solitary, broadly hemispherical, half-inch high : involucral bracts small aud numerous, 

 well imbricated, subulate-lanceolate, rather close; rays .3.j to 40, violet^purple, bareiy half- 

 inch long : akenes turbinate, short, densely canescent-villous, half the length of the compara- 

 tively rigid pappu*. — Proc. Am. Acad. xi. 76: Rothrock in Wheeler Rep. vi. 149, t. 7. — 

 Coiiiinnn in. South Park, Colorado, Purtir, Canhij, Greene, &c. Also San Juan Pass, at 

 12,000 feet, Brandegee. 



# * Genuine species, with annual or biennial but never truly perennial root, 

 •t^ Involucre densely hispidulous as well as visciil, very squarrose: akenes glabrous or glabrate: 

 pappus slender: heads large and broad (the disk two-thirds to full inch in diameter): herbage 

 green, not canescent, glabrate : leaves from incisely dentate to entire, their teeth or tips ob- 

 scurely if at all mucronate-setigerous : rays bright violet, showy: root biennial or somewhat 

 more enduring. 



A ■ Patterson!, Gr.vt. A span or two high, branched from the summit of the tap mot : 

 stems or branches with soft or cottoiiy-tunicntub.»se pubescence, or glabrate: leaves thickisb, 

 spatulate or Ungulate, entire or coarsely few-toothed, none widened at base : heads solitarv 

 or few : involucral bracts lanceolate : rays about 30, fuUy half-inch long. — Proc. Am. Acad. 

 xiii. 272, excl. A'ar. Mf'rhrrranthera canesrais, var. rilpina, Porter & Coulter, Fl. C'olorad. 

 59. — Moist ground along streams, Gray's Peak, Colorado; first coll. by Pwrij, then by Pat- 

 terson, &c. 



. A. Bigelovii, Gk.4.t. A foot or two high, robust : stem leafy, branching above, roughish- 

 hirsute to glabrate ; the flowering branches or peduncles irlandular-hirsute, terminated by 

 showy large heads ; lea.ves oblong or lanceolate, irregularly and sometimes incisely dentate, 



» sometimes entire ; radical lanceolate-spatulate ; cauline oblong to lanceolate, usually with 

 broadish partly clasping base : involucral bracts very numerous, linear-attenuate or the pro- 

 longed and much recurved tips almost iiliform : rays very many, an inch or less long. — 

 Pacif. R. Rep. iv. 97, t. 10. A. Tnirn^hendii, Hook. f. Bot. Mag. t. 6430 (wrong as to the 

 broadly obovate style-appendages figured and described); Robinson, Garden, xiii. t. 228. — 

 Southern Colorado and Xew Mexico, Biyelou-, Brandegee, Rusbij, &c. Very handsome in 

 cultivation, 

 -i— -i— Involucre from nearly glabrous to glandular-puberulent or canescent, not rarely viscid, but 



not hirsute or hispidulous; heads less ample: akenes densely pul.'c^cent. 

 -H- Leaves at most incisely dentate, rather rigid; root disposed to be biennial or somewhat more 

 enduring. — Dhter'ta, Xutt. 



^A.. g3nnnocephalus, Gn.ir. Stem erect, simple or branched from a rather slender root, 

 commonly hirsute or hispidulous, equably leafy to the top ; branches bearing solitary usually 

 naked-pedunculate mid.^le-sized heads : leaves spatulate-oblong to lanceolate ; cavdiue short 

 (inch or les^ long), usuaUv obtuse, copiously serrate or denticulate with spinulose-setigerous 

 teeth ; involucre depressed-hemispherical, half-inch or less high ; its bracts linear-subulate 

 with the tips squarrose; rays purjile, 4 or 5 lines long: receptacle fimbrillate. — Proc. Am. 

 Acad. XV. 32 ; Hook. f. Bot. Mag. t. 6549. Aphpappiis gymnocephalus, DC. Prodr. v. 34G, & 

 A. bJephariphi/Uus, Gray, PI. Wright, i. 97 ; the ray-flowers having been thought to be yellow 



