Aplopappus. COMPOSITE. 



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

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

 form with less open inflorescence (Lindheimer, 254, Drummond, 157) is Aplopuppus Hookeri- 

 untis, Gray, PL 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. 239. Gouzales, Texas, Drummond 

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



4. STENOTUS, 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 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 llocky Mountains and 

 westward, with leaves all entire. Proc. Am. Acad. vii. 3,33. Stenotus, Xutt. 

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



* Solidaginiform herb: heads corymbiform-cymose or glomerate at the summit of a leaf v stem: 

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

 nearly so. 



A. Parryi, GRAY. Green and almost glabrous, puberulent and somewhat viscid above: 

 stems 6 to 18 inches high from slender rootstocks : leaves obloug-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 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 Parry. Has somewhat the aspect and character of a large corymbciM- 

 Solidar/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. 



* * Typical species, herbaceous or suffruticulose and dwarf: heads solitary, terminating simple 

 steins or branches: rays conspicuous. 



1 Wholly herbaceous, chiefly alpine, disposed to be cespitose or multicipital, 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 the stigmatic portion. 



-H- Green, not woolly, mostly equably leaf}' up to the (half-inch) head. 



A. pygmeeus, GRAY. Less than a spau high, soft-pubescent or glabrate, uot viscid nor 

 glandular : leaves from linear-spatulate 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. titmotus pyym&us, 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. 

 18G3, 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 Lija/l. 



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

 A. lanuginosus, GRAY. Fully a span high from creeping rootstocks, floccose-tomentose ; 

 leaves soft, narrowlv spatulate or upper 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 sericeous- 

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

 Pickering and Brackenridye, recently by Ncvius, Howeli, tirandeyee ; and Montana, Watson. 



