Aster. COMPOSIT.E. 197 



Var. pubens. Lower face of the oblong-lanceolate leaves toraentulose-pubesceiit, also 



usually the flowering branclilets. — Sa>k:itLliewau to Upper Michigan. 



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

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

 iii 2038, as to char, and iudigcnous specimen in herb., from Miihl., not Ilort Berol. t. 07. 

 .1. ami/gdalinUs, Dertol. ifisc. vi. t. 5, f. 1. DnJIhigeria amjgdaliiin, Xees, Ast. 179, chiefly, 

 excl. syn. D. cornifolia, Liudl. in Hook. (_'om|K Bot Mag. i. 98. D//'l"i:af>pus ami/gdaliri'i^, 

 Torr. & Gray, 1. c. — Low pine barrens, i:c., Pcim. and New Jersey to Florida and Texas. 

 Extreme forms seem ^"erv different from ^i. uvibellatas, having leaves even 2 inches wide 

 by 3 in length. In specimen from Georgia, J. Uoniicll Smith, sti le-appendages (abnormally 1) 

 rounded-obtuse. 



" A. infirinus, Michx. Stem slender, often flexuous, a foot to a yard high, less leafy, simple 

 or with diverging flowering branches, liearing 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. .1. divaricutus, L. Spoc., as to syn. 

 Gronov. & Pluk. Aim. t. 79, not of lierli., nor char. ^1. cornifiAius, MuU. in ffilld. Sjiec. 

 iii. 2u:jy. A. humilis, WiUd. Hort. Berol. t. 67 (not herb, nor Spec. 1. c.) ; Pursh, Fl. ii. 548 ; 

 Ell. Sk. ii. 366. (''hrijsojuis humilis, Xutt. Gen. ii. 153, at lea,st partly. Dcdlingeria cuniifo/ia, 

 Kees, Ast. 181. Jjijilusfi-jihium cornifolium, DC. 1. c. iJijjlopappus corni/ulius, Torr. & Gray, 

 Fl. ii. 1S2. — Open woodlands, ilassachusetts and Penn. to Upper Georgia, Tennessee, and 

 Louisiana ? 



* * Leaves obtuse, occasionally toothed, both veins a-d veinlel-. conspicuoush' reticulated be- 

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

 corollas with short lobes. 



-A. reticulatus, Puksii. 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 lowest obovate (larger 3 inches long and 2 wide) : iuvolucral bract- lance- 

 olate: rays 10 to 1.3, ratlier long and narrow. — Fl. ii. 548. Clrri/sopsis oborata, Xutt. Gen. 

 ii. 152. 'Asler oboratus & A. dichotomus (the latter a slender and paniculately branching 

 statp), Ell. Sk. ii. 368, 366. Dijtlostejjhium boreale, Spreug. Syst. iii. 544. D. obovalum & 

 D. dichotomum, DC. 1. c. Dalliiiijn-ia obMuta, Xees, Ast. 182. JJiplopappus obovatus, Torr. 

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



§ 9. I.(xTHE. 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 narrovr. villous : loAv and tufted plants, with rigid stems, which 

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

 and veinl'ess le:ives. — Gray, Proc. Am. Acad. xvi. 98. Diplostep/iium^^ Amel- 

 loidea. ^'ees, Ast. 199. Diplopappus § Amelloidei, DC. Prodr. v. l'77, jiartly. 

 Diplopappus § lanthe, Torr. & Gray. Fl. ii. 181. 



# Head rather large (half-inch higli) and broad : style-appendages elongated, subidate-linear or 

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



- A. linariifolius, L. stems 6 to 20 incites high, puberulent, strict, very leafy up to the 

 heads: leaves widelv spreading (except the small ones on the branclilets), narrowly linear, 

 mucronate, about a'n inch long, green, smooth except the hispidulous-ciliolate or scabrous 

 acute margins ; uppermost more or less passing into the rigid acntish bracts of the pluriserial 

 campanulate'or somewhat turbinate involucre: rays deep violet. — J. linariifolius & A. rigt- 

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

 rimus, Lodd. Bot. Cab. i. t. 6. Chri/sopsis Imariifdia, Xutt. Gen. ii. 152. Diplostephum 

 linariifolium, Xees, Ast. 199. Diplopappus linariifolius (Hook. Fl., Torr. & Gray, ±10 & 

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

 consin and Texas. A variety with white rays is occasionally seen. 



