Aphamstephus. COMPOSITE. 163 



■i— -)— Depressed or dwarf, flowering from the ground: inner bracts of inTolucre cartilaginou^- 

 aristate ! 



L. nana, Geay, 1. c. Usimlly -temle*-. a very woolly and pellet-like tuft from a ^lende^ root, 

 an inch or two high, a clii.-ter of sessile (half -inch long) heads, each surrounded by a rosulate 

 cluster of spritulate or lanceolate leaves: involucre 10-12-ilowered; it- outer bracts linear- 

 lanceolate, mucronate-acute or cuspiihire. little herljaceous ; inner ones pearlv white, seaii.ais- 

 charraeeuus, tapeiiug into a rigid subtdate acuminatiou or awn which equals the flowers and 



very rufoiis pappus : akenes sb(jrt and turgid : tip to the tufted style-appendaL'-es wanting. 



Torr. in "Wilkes Exped. xvii. .i.J^, t. 7, poor. — Dry ground, foot-hiUs of the >i.;rra Nevada, 

 from .'^iskiyun l_'o. to Kern Co., Pirkfrinr/, FitrJ,, Mm'r, ''f.rnbi/, Rothrock. 



Var. caulescens. Leaves larger; radical ones much sur|jas-ing the sessile heads in 

 their axils : al-u -c\eTal developed oieuis. of an inch to 4 inches idgli, sparsely leaved, and 

 bearing either ^uiitary or 3 or 4 spicatcly dispo^eil heads. — s. California, at Tehaehipi Prss, 

 Parri). 



35. BELiLIS, Tourn. Dai-t. ( Latin name, from 5e/7?/s, xirettv. i — Low 

 herbs, of the northern hemisphere : the typical speries perennial and stemle-- : 

 radical leave.s obovate : rays white rose-colored, or purple. Tlie akenes in the 

 two perennial Mexictm species, viz. B. xaiithocontoifhs (Jirachtjcnine. Less. ) and 



■ JB. Jlex/co/io. Gray. PI. ^VriL:ht. i. 93 (coll. A^'ri^ht and iJoiirgHau i. as also in our 

 annual species, are less flat, and mav;:iiial nerves sli-nder or less thiekened, than 

 in the (Jld World species — Benth. & Hnuk. 'ti.-u. ii. I'l-J. 



— ■ B. PEREXxis, L., the common European D.4.IST, is escaping from cultivation and l.egiuning 

 to be spontaneiMis in a few places, 



• B. integrifolia, llicnx. Annual, sparsely pilose-pubescent, diffusely branched and leafy, 

 a span to a foot high: leaves spatulate-obovate and the upper narrower, entire: pednn< les 

 terminating |be branches: bracts of tlie involucre ovate-lanceolate, acuminate, scariou.-.mar- 

 giiieil : rays half-inch or less in lenLTth, u-ually pale violet. — Fl. ii. 1-31 : Hnok. But. Mag. 

 t. 3455; Torr. & Gray, Fl. ii. ISCC Eclipta intcgrifoUa, ^^'n^w.'. Syst, iii, 602, A^tranthium 

 inh'jrlr'jlium, Xutt, Trans. _\m. Phil, ^oc, ser. 2, vii. 312. — Low grounds, Kentucky to 

 Arkansas and Texas ; fl. spring and summer. 



36. APHANCSTEPHUS, DC. {'X<hav;'r. Yani=liin2- or inconsiiiruons, 

 and oTetpos, crown ; from the pappu-. i — Texano-^Iexican annuaLs or biennials, 

 sometime? perhaps of longer duration, pubescent, leafy— t.-mmed and branching: 

 with i-ather showv heads, re-embling tho-'.^ of D li-y. on .solitary peduncles termi- 

 nating the branches, and nodding liefore anthesis : leaves from entire to pinnately 

 lobed : rays from white to violet-purple: akenes almost or r^tiite giabrou.s. Fl. 

 summer. — Gray. PI. TTright. i. 03: limth. ic Hook. Gen. ii. -'02; (iray. Proc. 

 Am. .Vcad. xvi. 80. Aphanostepltus. Keerl'a (exel. one -jjecies. which i- a Xrmtho- 

 cephalum). i*c Leucopddlum. DC. Prodr. v. .30?. 310. vi. 43. 



* Pappus a very short crown with a L;liate-triiig.;J edje. which commonly is obsolete in age: base 

 of the corolla-tube seldo::-. thickened. 



A. ArizonicUS, Gkat. Erect, a foot high, minutely soi:-pubescent, not cinereous : upper 

 leaves linear and entire ; lower linear-spatulate, 3-,j-ljbed or laciniate : heads small, on at 

 length clavate-thickened peduncles : akenes narrow, terete, evenly striate with about 10 nar- 

 row ribs. Proc. ,Vm. Acad. xvi. SI. A. ramosissimus, Rothrock in TTheeler Eep. vi. 147. 



— Arizona, on the Gila Biver, Ttut/' rock: 



A. ramosissimus, T)C. Erect or at length diffuse, slender, a foot or less high, hispidu- 

 lous-pubescent : upper leaves linear or lanceolate, entire or few-toothed ; lower laciniate- 

 pinnatifid or incised: lieads on slender peduncles: rays 3 to 5 lines long: akenes abnost 

 terete and even, the ribs or nerves few and mostly obscure, except on some outermost. — 

 Prodr. V. 310 ; Gray, PI. Wright. 1. c. ; Torr. iu Marcy Bep. t, 9. A. Uiddellii, Torr. & Gray, 

 Fl. ii. 1S9. A. pilosus, Buckley in Proc. Acad.. Philad., a remarkably hispid form. Egletes 



