Aplopappus. COMPOSIT^E. 131 



char. & syn. Xutt. & Ell., excl. syn. f'ass., Lam., & Pink. Aim. — Dry and sandy ground, 

 Georgia and Florida to Arkansa.s and Texas ; flowering late. A rigid and rough-liispidulous 

 form with les.s open inflorescence (Ltndhehmr , 254, Drummond, 157) i.s Aj'/njiajijins Booheri- 

 amis. Gray, PI. Lindh. i. 40. 



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

 Iciues 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. — Gonzales, Texas, Drummond 

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



§ 4. Stexc'itus, Gray. Heads middle-sized, mostly broad : bracts of the in- 

 volucre from ovate to lanceolate or even linear, nfit ri^id, all of equal or moder- 

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

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

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

 westward, with leaves all entire. — Proc. Am. Acad. vii. 353. Steiwtus, Xutt. 

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



* Snlidaginifomi herb : heads corvmbiform-cvTiioFe or glomerate at the summit of a leafy stem: 

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

 nearly so, 



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

 stems 6 to IS 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 

 t 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. 

 — liocky Jlountaius, 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 corymbose 

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

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



* * T^'pical species, herbaceous or suffruticulose and dwarf: heads solitary, terminating pimple 

 stems or branches: rays conspicuous. 



4— Wholly herbaceous, chiefly alpine, disposed to be cespitose or multicipital, a span or less in 

 height: leaves soft, not pe^^istent: involucre lienii>pherical : rays 15 to 20; style-appendages 

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



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

 * A. pygm^US, Gray. Less than a span high, soft-pubescent or glabrate, not viscid nor 

 glandular: lea\"es 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. ,'>hnotus pygmmus, Torr. & Gray, Fh ii. 237. — Rocky 

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

 A ■ Lyalli, Gk.vt. Eather 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 Mountaius, ^Montana to Gregon and Brit. Columbia ; first coll. 

 by Lyalt. 



++ ++ 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, narrowly spatidate or upper linear (inch or two long) ; the sparse uppermost almost 

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

 in two series, outer barely greenish : style-ap]]eudages elongated-subulate : akenes sericeous- 

 cauescent. — M'ilkes Ex. Exped. xvii. 347. — Mountains of Washington Terr. ; first coll. by 

 Pickering and Brackenridge, recently by Nerius, Howell, Brandegee ; and Montana, Watson. 



