Bahia. COMrOSiT^. 333 



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

 the tli\ isioiis sometimes 2-3-parted into liuear-liliform segments and lobes : peduncles elon- 

 gated, filiform : involucre hemispherical, 2 lines high ; its bracts 8 or i), oval and tapering to 

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

 hairs ; throat broadly cyatliiform : paleffi of tlie pappus broadly cuneate-obo^atc, half the 

 lengtli of the corolla-tube, callous-thickened only at base. — Bot. Mex. Bound. 9G ; Proc. Am. 

 Acad. xi.\. 1. c. HchLuhria [Ach/jro/iappus) Biydocii, Gray, Proc. Am. Acad. ix. 190. — S. W. 

 Texas, in the valley of the Limpio, Bitjelow. 



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

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

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

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

 at and near the base. — Proc. Am. Acad. xix. 27. Schkuhria Neo-Mcxicana, Gray, PI. Fendl. 

 96, & Proc. Am. Acad. ix. 199. Ainhl i^opappus Neo-]\feTicanus, Gray, Pacif. 11. Hep. iv. 106 

 — Northern New Mexico and S. Colorado, Fendler, B'ujelow, Parrij, &.c. 



* * heaves mainlj- opposite, with linear divisions: flowers perhaps white : palca; of the pappus 

 lanceolate and with a complete costa. 



B. Woodhousii, Gray. Low, cinereous-pubcrulent : peduncles hardly longer than the 

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

 lobes : involuci'c 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 tlie disk-flowers : palea; of the pappus 

 8 to 10, with h^^aliue margins and a strong o])aque costa, which reaches the acute apex. — 

 Proc. Am. Acad. xix. 28. — Achijrnpappiis Wood/iousii, Gray, Pi'oc. Am. Acad. vi. 546. 

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

 Wood house. 



* * * Loaves all or mostly alternate, nakod-petioled, 2—3-ternateIy divided or parted; the divis- 

 ions from linear-spat (date to obovate, comparatively sliort : heads loosely cymose-paniculate at 

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

 exserted rays: palea; of the pappus oblong to narrowly lanceolate, with a distinct procurrent or 

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

 obpyraniidal with 4 sides. 



•i— Tube of tlie disk-corollas glandular but not hirsute; lobes ovate or oblong, shorter than the 

 dilated throat: pappus present. 



B. peclata, Gr\y. A foot or two high, cinereous-puberulent : leaves pedately divided, com- 

 monly into .'! petiolulate obovate or cuneate segments, of which the lateral are 2-partcd and 

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

 of the involucre oblong, obtuse, shorter thau the disk: ra3's about 12, oblong: palea; of the 

 pappus 10 to 12, .spatulate-oblong, with costa vauisiiing near the obtuse or retuse summit. — 

 I'l. Wright, i. 23, & Proc. Am. Acad. xix. 28. Schkuhria (Achijropappus) pcduta, Gray, 

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



B. biternata, Gray. More pubescent and slender : leaves biternately di.ssected 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: palesc 

 of the pM])pus 12 to 14, longer and narrower, about equalling the corolla-tube, those of tiie 

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

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

 flowers of intermediate character. — PI. Wright, ii. 9.5, & Proc. Am. Acad. 1. c. Schkidiria 

 (Achi/ro/iappus) biternata, Gray, Proc. Am. Acad. ix. 199. — Borders of W. Texas and adja- 

 cent New Mexico, Wright, Bigeloiv, Tlmrher. ]\Iay pass into tlie jireceding. 



-»— H— Tube of disk -corollas viscid-hirsute; the limb cleft into narrow lobes which are niucli 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 \vitli tlie 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 higli and broad: bracts of tlie involucre 16 to 20, crowded, from 

 olilong-lanccolate to obovate-oblong, inost of them conspicuously acuminate: rays as many, 

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



