BaMa. COMPOSIT.E. 333 



B. Bigelovii, Gray. Slender, a foot high, diffn.se, strigose-paberulent : leaves 3-parted and 

 the divisions sometimes 2-3-parted into linear-filiform segments and lobes : peduncles elon- 

 gated, filiform : involucre hemispherical, 2 lines high ; its bracts S or 9, oval and tapering to 

 both ends, viscidly hirsute : rays as many, oblong : tube of disk-corollas hirsute ivith viscid 

 hairs; throat broaiUy cyathiform : palea; of the pappus broadly cnneate-obovate, half the 

 length of the corolla-tube, callous-thickened only at base. — Bot. jlex. Bound. 96. Sdihuhria 

 (Aduinpupiius) Bigeloi-i), Gray, Proc. Am. Acad. ix. 199; Proc. Am. Acad. xix. 1. c — 

 S. ^A'. Texas, in the valley of the Limpio, Bigelow. 

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

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

 of about 10 sparingly pubescent spatulate 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 . Schkuhria Xeo-Mexicana, Gray, PI. Pendl. 

 96, & Proc. Am. Acad. ix. 199. — Northern Xew Mexico and S. Colorado, Fmdler, Bigdow, 

 Parry, &c. 



* * Leaves mainly opposite, with linear divisions: flowers perhaps white : paleas of the pappus 

 lanceolate and with a complete costa. 



B. ^T^OOdilOUsii, Gray. Low, cinereons-puberulent : pedimcles hardly longer than the 

 heads : leaves thickish, 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 : paleaj 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 Woodhousii, Gray, Proc. Am. Acad. vi. 546. 

 Sdihuhria Woodhousii, Gray, Proc. Am. Acad. ix. 199. — Northern part of New Jlexico, l>r. 

 Woodhouse. 



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

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

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

 exserted raj's : palea? of the pappus oblong to narrowly lanceolate, with a distinct procurrent or 

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

 obpyramidal with 4 sides. 



-I— 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-puberalent : 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 hues high : bracts 

 of the involucre oblong, obtuse, shorter than the disk: rays about J 2, oblong : palese of the 

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

 PI. Wright, i. 132, & Proc. Am. Acad. xix. 28. Schhuhria (Adirjropappits) pedata, Graj-, 

 Proc. Am. Acad. ix. 199. — S. W. Texas, on the Limpio and Rio Grande, Wright, Bigelow. 



B. biternata, Ge.vy. ilore pubescent and slender : leaves bitemately 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 : paleje 

 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. — PI. Wright, ii. 95, & Proc. Am. Acad. 1. c. Sdil:uhria 

 {Adtt/ropappus) biternata, Gray, Proc. Am. Acad. ix. 199. — Borders of W. Texas and adja- 

 cent New Jlexico, Wright, Bigeloic, Thurber. Jlay pass into the preceding. 



^_ H_ Tube of disk-corollas vi*cid-hirsute; the limb cleft into narrow lobes which are much longer 

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



'B. chrysanthemoides, 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 many, 

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



