302 COMPOSITiE. Thelesperma. 



» T. gracile, Geat, 1. c. More rigid, a foot or two high from a deep perennial root, less 

 branched, naked above : leaves once or twice 3-5-nately divided or parted into filiform-linear 

 or broader lobes, or some upper ones filiform and entire ; bracts of the outer involucre 4 to 6, 

 very short, ovate or oblong ; of the inner one connate to above the middle, the edges of their 

 lobes sligiitly scarious : dislc mostly yellow, scarcely brownish after anthesis : akeues less 

 papillose or roughened, the breadth of the summit exceeded by the subulate awns : rays 

 usually none, rarely present and 2 or 3 lines long. — Bideiis gracilis, Torr. Ann. Lye. N. Y. 

 ii. 215. Cosmidium gracile, Torr. & Gray, 1. c. — Plains, Nebraska and Wyoming to 

 W. Texas and Arizona. (Adj. Mex.) 



* * Lobes of disk-corollas from ovate to oblong, decidedly shorter than the cylindraceous tliroat; 

 the proper tube also shorter than in the foregoing: pappus shorter and more coroniform, desti- 

 tute of retrorse bristles or hairs, or wanting. 



-i— Lcaf^'-stemmed, brandling, herbaceous to tiie ground : style-appendages subulate-tipped. 



T. SUbsimplicifolium, Gray. Stems slender, rigid, 1 to 3 feet high : leaves sometimes 

 all entire and filiform (1-J to 3 inches long), sometimes 3-5-parted into filiform entire lobes ; 

 outer bracts of the involucre oblong to linear, short: rays half-inch long: akenes short- 

 fusiform : pappus 2 minute slightly hairy teeth, or obsolete. — Bot. Jlex. Bound. 90. T. sim- 

 jilicifolium. Gray, Kew Jour. Bbt. 1. c. Cosmidium simplicifolium, Gray, PI. Pendl. 86. — 

 Eocky prairies, Texas to Arizona. (Adj. Mex.) 



-I— -t— Low, branching from a lignescent base, very leafy below, sending up long and naked or 

 scapiform peduncles: outer involucre short and small: akenes fusiform, more incurved at 

 maturity. 



T. SUbnudum, Gray. Bather stout : leaves thickish and rigid, once or twice ternately 

 parted into linear or lanceolate lobes: peduncles 4 to 10 inches long: head ratlier large 

 (half-inch high) :' rays sometimes none, sometimes ample (the larger two-thirds inch long 

 and over half-inch ivide) : style-appendages subulate-tipped : pappus a minute 4-5-toothed 

 naked crown, or obsolete. — Proc. Am. Acad. x. 72. Includes also T. subsimplicifolium, var. 

 scaposum. Gray, coll. Parry, &c. — New Mexico, S. Utah, and N. Arizona, Palmer, Parry, 

 Ward. Also apparently Green River, Wyoming, Parry, a plant referred to T. gracile. 



T. longipes, Gray. Fastigi:itely much branched at the woody base, very leafy : leaves 

 3-5-parted into filiform divisions wliich are usually no wider than the rliachis : peduncles 

 filiform, wholly simple, 5 to 10 inches long : head small (quarter-inch liigh), rayless : style- 

 appendages tipped with a very short cone : akenes barely 2 lines long, arcuate at maturity, 

 falling free from the chaff: pappus quite obsolete. — PI, Wright, i. 109; Eothrock in 

 Wheeler Bep. vi. 164. — Dry hills and banks, W. Texas and Arizona, Wright, Eothrock (not 

 showing the woody stems), Lcmmon. (iNIex., Sdiaffner.) 



II, 



118. BALDWlNIA, Nutt., in the form of Balduhia. {Dr. Wm. Baldwin 

 collaborator with Elliott, died early.) — Apparently biennials or annuals (of S. 

 Atlantic 8t;ites), mostly glabrous or minutely puberulent ; with alternate entire 

 leaves, puncticulute in the manner of Heleniiim and veinless, and solitary or corym- 

 bosely paniculate heads of yellow flowers, or those of the disk sometimes purplish- 

 tinged : fl. late summer and autumn. — Nutt. Gen. ii. 17o; Ell. Sk. ii. 447; 

 Benth. & Plook. Gen. ii. 391. Buldn-inid and Actinospermum (Ell.), Torr. & 

 Gray, Fl. ii. 388. (True afRnity rather with the Hehnioidca;:) 



• B. uniflora, Xutt. 1. c. Stem rather stout, simple or simply branched, 1 to 3 feet high from 

 a perhaps "perennial" root, with terminal usually elongated jicduncle bearing a solitary 

 large head : lea,ves olituse, spatulate, or the upper linear : brac-ts of the involucre numerous, 

 in about t series, thickisli, at first ai)pressed : rays 20 to 30, cuneate-liiiear, 3-toothed at 

 truncate apex, inch or more long: concreted chaff of receptacle truncate : akeues cvlindra- 

 ceous-obconical, with pappus <,f 7 to 9 mrrrowly oblong palea; of ne:irlv its length. — KU. Sk. 

 ii. 447. — Low pine barrens, S. Carolina to Florida and Louisiana ; first coll. by Bartram. 



.B. multiflora, Nitt. 1. c. Slender, from an luuiual or biennial root, branching above, very 

 leafy up to the sexcral or numerous slender peduncles, gkbrous or sometimes sparsely hir- 

 sute : leaves all narrowly linear: heads small (3 or in fruit 5 lines high) : bracts of tlie 



