Aster. COMPOSIT.E. 197 



Var. piibens. Lower face of the oblong-lauceolr.te leaves tomentulose-pal.esceiit, also 

 usually the flowering braiichlets. — SaskatL'hewau to Upper Michigan. 



Var. latifolius. ytems 2 to 5 feet high: leaves from ovate-lanceolate to ovate, com- 

 paratively short, less narrowed or sometimes even rounded at base. — A. humilis, Willd. Spec, 

 iii 2038, as to char, and iiuiigouous specimen in herb., from Muhl., not Hort. Berol. t. 67. 

 A. amijgdaliiuis, Bertol. Misc. vi. t. 5, f. 1. Daelllnrjeria amjfjdalina, Nees, Ast. 179, chiefly, 

 excl. syn. D. cornlfolla, Lindl. in Hook. Comp. Bot Mag. i. 98. Di)ilop(ippus ammidalinus, 

 Torr. & Gray, 1. c. — Low pine barrens, i&c, Penn. and New .Jer.sey to Florida and Texas. 

 Extreme forms seem very different from A. umbdlatus, having leaves even 2 inches wide 

 by 3 in lengi;h. In specimen from (ieorgia, J. Donnell Smith, style-appendages (abnormally ? ) 

 rounded-obtuse. 

 A. infirmus, Miciix. Stem slender, often flexuous, a foot to a yard high, less leaf}^, simple 

 or with diverging flowering branches, bearing several or few (or even solitary) pedunculate 

 heads: leaves obovate to ovate or oblong (rarely lanceolate, lower small and scattered), 

 with attenuate base and hispidulous-ciliolate margin and midrib, more copious primary and 

 some loosely reticulated secondary veins : involucre more imbricated, of thicker and broader 

 obtuse bracts : style-appendages linear-subulate : pappus more rigid ; bristles of the longer 

 pappus nearly all clavellate, rather scanty. — Fl. ii. 109. A. dicaricutus, L. Spec, as to syn. 

 Grouov. & Pluk. Aim. t. 79, not of herb., nor char. A. cornifolius, Muhl. iu Willd. Spec. 

 iii. 2039. A. humilis, Willd. Hort. Berol. t. 67 (not herb, nor Spec. 1. c.) ; Pursh, Fl. ii. 548 ; 

 Ell. Sk. ii. 366. Chrijsopsis humilis, Nutt. Gen. ii. 153, at least parth\ Dallingeria coniijh/ia, 

 Nees, Ast. 181. Diplostephium cornifolium, DC. 1. c. Diplopappus cornifolius, Torr. & Gray, 

 Fl. ii. 182. — Open woodlands, Mas.sachusetts and Penn. to Upjjer Georgia, Tennessee, and 

 Louisiana ? 



* * Leaves obtuse, occasionally toothed, both veins a- d veinlets conspicuously reticulated be- 

 neath: akeues oblong, pubescent: pappus softer and finer, inner bristles not clavellate: disk- 

 corollas with short lobes. 



A. reticulatus, Pursh. Canescently puberulent : stems strict, 1 to 3 feet high, simple or 

 fastigiately branched at summit, bearing few or numerous slender-pedunculate heads : leaves 

 oval or oblong, or lowe.st obovate (larger 3 inches long and 2 wide) : involucral bracts lance- 

 olate : rays 10 to 13, rather long and narrow. — Fl. ii. 548. Clirijsopsis ohovuia, Kutt. Gen. 

 ii. 152. Aster obomtus & A. dichotomus (the latter a slender and paniculately branching 

 state). Ell. Sk. ii. 368, 366. Diplostephium boreale, Spreng. Syst. iii. 544. D. obovafitm & 

 D. dirhotomum, DC. 1. c. iJa'llimjeria oborata, Nees, Ast. 182. Diplopappus obovatus, Torr. 

 & Gray, Fl. ii. 184. — Low pine barrens, S. Carolina to Florida. 



§ 9. lixTHE. Pappus less distinctly double; outer setulose (in one species 

 obscure), inner not clavellate : otherwise as in § Orthomeris : involucre about 

 equalling the disk, of narrow and appressed well-imbricated bracts: rays 10 to 

 18, violet: akenes narrow, villous: low and tufted plants, with rigid stems, which 

 are thickly beset with the small linear or lanceolate entire and rigid one-nerved 

 and veinless leaves. — Gray, Proc. Am. Acad. xvi. 98. Diplostephium § Amel- 

 loidea, Nees, Ast. 199. Diplopappus § Amelloidei, DC. Prodr, v. 277. partly. 

 Diplofappus § lantke, Torr. & Gray, Fl. ii. 181. 



* Head rather large (iialf-inch hifrh) and broad: style-appendages elongated, subidate-linear or 

 narrower: akenes flat, with strong marginal nerves and sometimes a single lateral nerve. 



A. linariifolius, L. Stems 6 to 20 inches high, puberulent, strict, very leafy up to the 

 heads: leaves widely spreading (except the small ones on the branchlets), narrowly linear, 

 mucronate, about an inch long, green, smooth except the hispidulous-ciliolate or scabrous 

 acute margins ; uppermost more or less passing into the rigid acutish bracts of the jduriserial 

 campanulate or somewhat turbinate involucre : rays deep violet. — A. linuriifulius & A. ruji- 

 dus, L. Spec. ii. 874; Bart. Fl. Am. Sept. iii. t. 104; Bertol. Misc. Bot. v. t. 6. A. pulcher- 

 rimus, Lodd. Bot. Cab. i. t. 6. Chri/sopsis hnariifolia, Nutt. Gen. ii. 152. Diplostephium 

 linariifolium, Nees, Ast. 199. Diplopappus bnariifolius (Hook. Fl., Torr. & Graj', Fl.) & 

 D. riyidus, Lindl. in DC. Prodr. v. 277. — Dry sandy or gravelly soil, Newfoundland to Wis- 

 consin and Texas. A varietv with white ravs is occasionallv seen. 



