Aplopappus. COMPOSITE. 131 



char. & syn. Kutt. & Ell., excl. syn. Cass., Lam., & Pluk. Aim. — Dry and sandy ground, 

 Georgia and Florida to Arkansa.s and Texas ; flowering late. A rigid and roughhispidulous 

 form with less open inflorescence [Lindhcimnr, 254, Dnimmond, 157) is Aplopappus Hooleri- 

 iiniis, Gray, PI. Lindh. 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 : involucral bracts subulate-lanceolate, with less attenuate 

 points. — Isopappus Hookerianus, Torr. & Gray, Fl. ii. 2.39. — Gonzales, T3exas, Drummond 

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



§ 4. SxENOxrs, 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 unerjual length : rays several or numerous : disk-corollas somewhat ampliate 

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

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

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

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



* Solidaginiform hevb : heads corvmbiform-cymose 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, Grat. Green and almost glabrous, piiberulent and somewhat viscid above : 

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

 the upper oblong-lanceolate, thiunish, loosely veiny (2 to 4 inches long) : heads uearh' 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 outer partly herbaceous, in about three 

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

 than the stigmatic portion. — Am. Jour. Sci. ser. 2, xxxiii. 10 ; Eaton, Bot. King Exp. 162. 

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

 feet ; first coll. by Pan-y. Has somewhat the aspect and character of a large corymbose 

 Solid'if/o. — Var. minor is a reduced subalpine form (Wahsatch Mountains, Utah, at 12,000 

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



* * Tj'pical species, herbaceous or suffruticulose and dwarf: heads solitary, terminating simple 

 stems or branches : rays conspicuous. 



4— Wliolly liei'baceous, chiefly alpine, disposed to be cespitose or multicipital, a span or less in 

 height: leaves soft, not persistent: involucre hemispherical: ravs 15 to 20: stjle-appeiidages 

 oblong to subulate, shorter or not longer than the stigmatic portion. 



+4- Green, not woolly, mostly equably leafj^ up to the (half-inch) head. 



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

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

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

 Am. Jour. Sci. ser. 2, xxxiii. 239. Stenotus pi/rjmceus, Torr. & Gray, Fl. ii. 237. — Rockv 

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



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

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

 olilong and more foliaceous : akenes and ovaries glabrous or nearlj^ 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 LijaJl. 



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

 A. lanuginosus, Gray. Fully a span liigh from creeping rootstocks, floccose-tomentose ; 

 leaves soft, narrowly spatulate or ujjper linear (inch or two long) ; the sjjarse 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 sericeous- 

 cauescent. — Wilkes Ex. Exped. xvii, 347. — Mountains of Wasliington Terr.; first coll. by 

 Pickering and Brackenridge, recently hy Nevius, Howell, Brandegee ; and Montana, Watson. 



