Bigdovia. COMPOSITE. 141 



■ B. nudata, DC. Glabrous : Ftems slender, a focit or two high from a small caudex, strict 

 and simple np to the compound-fLi-tigiate and corymhose cyme of numerou- hea<i> : leaves 

 not pnnc tare nor obviously vi-, id, sjiatulate to nearly filiform, nppermo-r -xmW and bract- 

 like : heads barely 3 lines higli, subclavatc : bracts of the involucre about 3 in each rather 

 indistinct vertical rank, oblong-linear, ol.tuse and firm<-harta' eous. or at least outermost 



• with short greenish tips. Leaver In the original of the specie- -].atulate-lihear, or uppermost 

 narrower, h n est and radical commonly broader i - nietimes half-inch wide) anrl roimded- 

 obtuse. — Prodr. v. JiO. i Mem. Comp. t. 5 B. nudata, var. spalhidafolia, Torr. s: Grav. Fl. 

 ii. 232. Chr'/<ocoma nudata, Mickx. Fl. ii. 101 ; Xutt. Gen. ii. 137. — Low pine barrens. New 

 Jersey to Fhjrida and Louisiana ; fl. antunm. 



Var. virgata, Toee. & Geat, 1. c. Cauline leaves linear-filiform, or ] :.ive=t and the 

 , radical linear-spanilate- — B. virgata, DC. 1. c. Chrysocoma iir</ata,Sutt. 1. c.^Xew Jersey 

 to Texas. Passes into the broader-leaved form. 



§ 4, EuTHAMiup-i-. HeinU (small I 7-2.j-tlowered : bracts of the involucre 

 wholly chartaceous. or in >ome obscurely aTeeni^h at tip. hardly carinate, obtu.se 

 or nearly ~o and muticous. appresserl-imbricated in 3 or 4 -erie-. but vertical ranks 

 incon>pii;uou5 : style-appendagci hardly ex=erted out of the J-lobe'l limb of the 

 coroDa. subulate-ililong to short-filtform. shorter or not hjiJirer than the stigmatic 

 portion : akenes mciitly short and turbinate, sericeous-pubescent ; shrubbv, be- 

 connD2 more or less balsamie-vi^cid, and with entire punctate leaves : corollas of 

 outermost flowers sometime- deformed. — % Aplodhcis. Eathamioidea, mainly, 

 Gray, Proc. Am. Acad. viii. 639. 



* Sr-ms simple below and fas:;^iately branched above, .3 to 12 feet high, bearing numerous heads 

 in clc'se and ample corymbiform cymes : leaves plane: involucral bracts small, lanceolate, wholly 

 chartaceous and pale, or miduerve obscurely greenish. 



"B. Paxishii, Geeexe. Leave* thickisli. laaceolate or oWong-linear (inch or two long, 



quarter to nearlv half an inch wide), mucronate, strongly punetate ; L^a'ls 10-12-riL'-ered, 



r fnllv 3 lines long). — Bull. Torr. Club, ix. 62 — M'nnrains near San Bernardino, .'-. E. 



California. Parish, &c. Stems sometimes 2 or 3 inches in diameter. 

 B. arborescens. Gray. Leave- narrowly linear, very numerous (1 to 3 inches long, a line 

 wide I , moderately punctate: heads 2n-25-iiiiwered, barely 3 lines long: outer flowers often 



• deformed. — Proc. Am. Acad. viii. 640. Zr/.os/rAs ar6or(s.*;,i, (iray, Bot. ilex. Bound. 79. 

 — Dry ground, common in the Coast Ranges of CaHfomia, sparingly in the Sierra Xevada; 

 first colL by Fitch and Kellogg. 



* * Branched from the base : heads paniculate or more scattered : leaves filiform, thickisb : bracts 

 of involucre larger and rather few. oblong, ^'btuse. 



B. Cooperi, Ge-it. Apparently low, with leaves half-inch or le-s 1 jng. balsamic-viscid : 

 heads few in a cluster at the end of the branchlets. 6-S-tiowered : bracts of involucre nar- 

 Towlv oblong, chartaceous, pale to the apex: style-appendages ovate-snbiilate. — Proc. Am. 

 Acad. viii. 640, & Bot. Calif, i. 315. — S E. California, on eastern si jpe of Providence 

 Motuitains. Cooper. Xot again found : only branchlets known. 

 B. brachylepis, Geat. Shmh 4 to 6 feet high : leaves inch or half-inch long, balsamic- 

 viscid, conspieu jii-lv resinous-pimctate : heads loosely pauicnlat* or solitary terminating 

 paniculate branchlets. s-12-tlowered, 4 or 5 lines high : tracts of the campannlate involucre 

 oblons, more or less carinate by a crlandular thickeued midnerve ,'«innermost not snrjiassing 

 the linear-obl ;n s akenes. outermost passing into small commonly imbricated scales on the 

 peduncle : stvle-appendases snbttlate-filiform. — Bot. Calif, i. 614. — S. California, along the 

 scnrhem borders of San Diego Co., near the Mexican frontier. Palmer, Cleveland, Xn-in. 

 (Adj. Lower Calif.) 



B. DIFFUSA, Gray, Proc. Am. Acad. viii. 640 [Lrr.o-yris Sonor.euS'S, Gray, 1. c. 291, Eri- 

 cameria d.rrisa, Benth. Bot. sulph. 23. >o dnqo dijfusa, Gray, Proc. Am. Acad. v. 1.59), of 

 Lower California {Hinds, Xantus) and s .n ora Pn:me • i, is a species of this group, with filiform 

 leaves obscurelv ptmctate, and involucral bracts of firmer texture, the tips greenish, verging 

 therefore to the next section. 



