Aplopappus. COMPOSITE. 131 



char. & syn. Nutt. & Ell., excl. .syn. C.is.s., L:im., & Pink. Aim. — Pry and sandy gronnd, 

 Georgia and Florida to Arkansas and Texas ; flowering late. A rigid and rougli-hispidulous 

 form with less open inflorescence {Lindhcinier, 2.54, Druminond, 157) is Aplojiojipus Hookeri- 

 anus, Gray, PI. Lindii. i. 40. 

 A. Hookerianus. Low, loosely branched from the base, barely hirsute, not glandular : 

 leaves not rigid, entire ; upper linear or attenuate-lanceolate, sparingly hispidly ciliate ; 

 lower spatulate, short, naked : iuvolucral bi'aets sul)ulatc-lanceoIate, with less attenuate 

 points. — Isopapjins Ilookerianm^, Torr. & Gray, Fl. ii. 239. — Gonzales, Texas, Drummond 

 (184 of coll. 3) ; not since found : perhaps an unusual state of A. diraricutus. 



§ 4. Sten(')TUS, Gray. Heads middle-sized, mostly broad : bracts of the in- 

 volucre from ovate to lanceolate or even linear, not rigid, all of equal or moder- 

 ately unequal lengtli : rays several or numerous : disk-corollas somewhat ampliate 

 ujnvard and deeply 5-toothed : style-appendages various : pappus soft and white 

 or whitish : perennials (herbaceous or fruticulose), of the Rocky Moinitains and 

 westward, wath leaves all entire. — Proc. Am. Acad. vii. 353. Stenotus, Nutt. 

 Trans. Am. Phil. Soc. 1. c. 334. 



* Sdlidaginifonn herb: heads corvmbiform-cymnse or glomerate at the summit of a leafy stem: 

 involucre campanulate: rays 12 to 20, small and narrow: akenes short and glabrous or 

 nearly so. 



A. Parryi, Gray. Green and almost glabr(ms, puberulent and somewliat viscid aliove : 

 stems 6 to 18 inches high from slender rootstocks : leaves oblong-obovate and spatulate, or 

 the upper oblong-lanceolate, thinnish, loosely veiny (2 to 4 inches long) : heads nearly half- 

 inch high, rather numerous (in a dwarf form reduced to a glomerule of 2 or 3) : involucral 

 bracts oblong, obtuse, pale and chartaceous or the oiiter partly herbaceous, in about three 

 moderately unequal ranks : flowers pale-yellow : style-appendages lanceolate, rather longer 

 than the stigniatic portion. — Am. Jour. Sci. ser. 2, xxxiii. 10 ; Eaton, Bot. King Exp. 1G2. 

 — Rocky Mountains, from those of Colorado to the Wahsatch, in open woods, 6,000 to 10,000 

 feet ;■ first coll. by Parrij. Has somewhat the aspect and character of a large corymbose 

 Solidu</o. — Var. minor is a reduced subalpine form (Wahsatch Mountains, Utah, at 12,000 

 feet, M. E. Jones), with leaves only an inch or two long, and 2 or 3 narrower heads. 



* * T3'pical species, herbaceous or suffruticulose and dwarf: heads solitary, tcrmiii.-iiing ?iinple 

 steins or branches: rays conspicuous. 



-1^ Wholly herbaceous, chiefly alpine, disposed to be cespitose or multk-ipital, a span or less in 

 height: leaves soft, not persistent: involucre hemispherical: rays 15 to 20: style-appendages 

 oblong to subulate, shorter or not longer than tlie stigniatic portion. 



■H- Green, not woolly, mostly equably leafj^ up to the (iialf-incli) head. 



A. pygmseus, Gray. Less than a span high, soft-pubescent or glabrate, not viscid nor 

 glandular: leaves from linear-sjiatulate to spatulate-oblong : iuvolucral bracts oblong, outer 

 ones foliaceous and loose, very obtuse, equalling the thinner innermost : akenes pubescent. — 

 Am. Jour. Sci. ser. 2, xxxiii. 239. Stenotus ptjijinceus, Torr. & Gray, Fl. ii. 237. — Rocky 

 Mountains, Colorado, strictly alpine ; first coll. by James. 



A. Lyalli, Gray. Rather taller, larger-leaved, viscid-puberulent : leaves obovate-spatulate to 

 oblanceolate : involucre glandular ; its bracts lanceolate, acute, sometimes 2 or 3 outermost 

 oblong and more foliaceous : akenes and ovaries glabrous or nearly so. — Proc. Acad. Philad. 

 1863, 64. — Alpine region of Colorado Rocky Mountains, first coll. by James. Also in 

 northern Rocky and Cascade Mountains, Montana to Oregon and Brit. Columbia; first coll. 

 by Lijall. 



++ ++ Woolly or tomentose, at least the involucre, above less leafy, or head pedunculate. 



A. lanuginosus, Gray. Fully a span higii from creeping rooistocks, floccose-tomentose ; 

 leaves soft, narrowly spatulate or ni)])er linear (inch or two long) ; the sparse uppermost almost 

 filiform : involucre half-inch high ; its bracts lanceolate, acute or acuminate, thin, nearly equal, 

 in two series, outer barely greenish : style-appendages elongated-subulate : akenes sericcous- 

 canescent. — Wilkes Ex. Exped. xvii. 347. — Mountains of Washington Terr.; first coll. by 

 Pic/cerinc/ and Biuckenridije, recently hy Nevius, Howell, Brande(jee ; and Montana, Watson. 



