Bahia. COMPOSITE. 333 



B. Bigelovii, GRAY. Slender, a foot high, diffuse, strigose-puberulent : leaves 3-parted and 

 the divisions sometimes 2-3-parted into liuear-iilii'orm segments and lobes : peduncles elon- 

 gated, filiform : involucre hemispherical, 2 lines high ; its bracts 8 or 9, oval and taperin"- to 

 both ends, viscidly hirsute : rays as many, oblong : tube of disk-corollas hirsute with v.iscid 

 hairs ; throat broadly cyathifurm : palete of the pappus broadly cuneate-obovate, half the 

 length of the corolla-tube, callous-thickened only at base. Bot. Mex. Bound. 96 ; Proc. Am. 

 Acad. xix. 1. c. Sclikuhria (Achyropappus) Bigdovii, Gray, Proc. Am. Acad. ix. 199. S. W. 

 Texas, in the valley of the Limpio, Biyelouo. 



B. Neo-Mexicana, GRAY. A span or more high, minutely pnberulent : leaves 3-7-parted 

 into narrow linear divisions; uppermost little shorter than the slender peduncles: involucre 

 of about 10 sparingly pubescent spatulatc bracts : rays none : disk-corollas small, with glan- 

 dular tube, almost equalled by the obovate palese of the pappus, which are much thickened 

 at and near the base. Proc. Am. Acad. xix. 27. Scltkuliria Neo-Mexicana, Gray, PI. Fendl. 

 96, & Proc. Am. Acad. ix. 199. AmblijOpappus Neo-Mexicanus, Gray, Pacif. R. Hep. iv. 106 

 Northern New Mexico and S. Colorado, Fendler, Biyelow, Parry, &c. 



* * Loaves mainly opposite, with linear divisions: flowers perhaps white : palea; of the pappus 

 lanceolate and with a complete costa. 



B. "WoodllOUsii, GRAY. Low, cinereous-puberulent : peduncles hardly longer than the 

 heads: leaves thiekish. 3-parted, and the middle divisions sometimes with a pair of lateral 

 lobes: involucre 3 lines high; its bracts 8 or 9, oblong-obovate, obtuse: rays 8 or 9, with 

 oblong ligules a line or two long, hardly surpassing the disk-flowers : palese of the pappus 

 8 to 10, with hyaline margins and a strong opaque costa, which reaches the acute apex. 

 Proc. Am. Acad. xix. 28. Achyropappus \Vooc1honsii, Gray, Proc. Am. Acad. vi. 546. 

 Schkuhria Woodhousii, Gray, Proc. Am. Acad. ix. 199. Northern part of New Mexico, Dr. 

 Wood/iouse. 



* * * Leaves all or mostly alternate, naked-petioled, 2-3-ternately divided or parted; the divis- 

 ions from linear-spatulate to obovate, comparatively short : heads loosely cymose-paniculate at 

 the naked summit of the erect stems, hemispherical, yellow-flowered, with oblong or obovate 

 exerted rays: palete of the pappus oblong to narrowly lanceolate, with a distinct procurn-nt or 

 excurrent costa, or the pappus wanting: akenes tetragonal- clavate, or those of the ray slender 

 obpyramidal with 4 sides. 



Tube of the disk corollas glandular but not hirsute; lobes ovate or oblong, shorter than the 

 dilated throat: pappus present. 



B. pedata, GRAY. A foot or two high, cinereous-puberulent : leaves pedately divided, com- 

 monly into 3 petiolulate obovate or cuneate segments, of which the lateral are 2-parted and 

 the middle 3-7-lobed ; the lobes obovate or broadly oblong, short : heads 5 lines high : bracts 

 of the involucre oblong, obtuse, shorter than the disk: rays about 12, oblong : palese of the 

 pappus 10 to 12, spatulate-oblong, with costa vanishing near the obtuse or retusc summit. 

 PL Wright, i. 23, & Proc. Am. Acad. xix. 28. Scfd-iilin'a (Achi/rojKip/nifi) pedata, Gray, 

 Proc. Am. Acad. ix. 199. S. W. Texas, on the Limpio and Eio Grande, Wriyltt, Biyelow. 



B. biteraata, GRAY. More pubescent and slender : leaves biternatcly dissected into linear 

 and obtuse or somewhat spatulate segments and lobes, the primary ones slightly petiolulate : 

 heads 4 lines high: bracts of the involucre obovate: rays 8 or 10, broadly obovate: paleas 

 of the pappus 12 to 14, longer and narrower, about equalling the corolla-tube, those of the 

 outer flowers obovate and obtuse, with costa evanescent below the apex ; of the inner flowers 

 longer, elongated-lanceolate, and with costa excurrent into an awn-like cusp ; in intermediate 

 flowers of intermediate character. PL Wright, ii. 95, & Proc. Am. Acad. 1. c. Sdi/cu/tria 

 (Achyropappus) bfternatn, Gray, Proc. Am. Acad. ix. 199. Borders of W. Texas and adja- 

 cent New Mexico, Wright, Bigeloic, Thurber. May pass into the preceding. 



-1 -1 Tube of disk-corollas viscid-hirsute; the limb cleft into narrow lobes which are much longer 

 than the throat and little shorter than the tube: pappus none. 



B. dirysanthemoides, GRAY. Taller and stouter, 1 to 4 feet high, puberulent or below 

 glabrous, above with the flowering branches and short peduncles glandular-pubescent and 

 viscid: leaves 1 -3-ternately divided or parted; the lobes from oblong and obtuse to nearly 

 linear: heads 5 or 6 lines high and broad: bracts of the involucre 16 to 20, crowded, from 

 oblong-lanceolate to obovate-oblong, most of them conspicuously acuminate: rays as rrmnv, 

 obovate-obloug : akenes obscurely striate on the four narrow faces, the whole apex covered 



