Chrysopsi!^. COMPOSITOR. oqq 



16. CHRYSOPSIS, Nutt. 

 Head inany-flownrorl, hctorogamoua, with numcrons fortilo rays, or in two species 

 horaoganious, tlio rays being wanting. Involnoro canipanulato or licniisplicrical ; 

 the scales imbricated, narrow, acute, mostly with somewhat scarions margins, desti- 

 tute of herbaceous tips. Receptacle flat, foveolate, or alveolate-toothed° Appen- 

 dages of the style-branches linear or subulate and hispid. Akenes oblong-linear or 

 obovato -oblong, compressed, hairy, the margins and each face commonly 1 -nerved. 

 Pappus alike in disk and ray, double ; the interior of copious rather rusty scabrous 

 capillary bristles of unequal length, the longer about equalling the corolla ; the exte- 

 rior a set of very short chaffy bristles or narrow little scales (slender and incon- 

 spicuous in § 2). — Low herbs (the Californian species perennial), with stems rather 

 thickly beset with alternate sessile leaves, and terminated by solitary or corymbose 

 (middle-sized) heads of yellow flowers, — Torr. & Gray, Y\. ii. 252. 



§ 1. Heads with rays: exterior pappus evident and more or less chaff?/ : herbage hir- 

 sute or villous. — CiiRYSorsis proper. 

 1. C. sessiHflora, Nutt. Hirsute, varying from hispid to soft-villous : stems a 

 toot or so in height, erect or ascending from tufted thick rootstocks : leaves oblonc/ 

 or the lower spatulate, mostly entire : disk-corollas beset externally near the summit 

 with some scattered very slender hairs : outer pappus squamellate. — The following 

 apparently all of one variable species. Nuttall's original, from Santa Barbara, &c • 

 not canoscont, eomowhat hispid and glandtdar : stem and bmnches leafy up to tlio 

 head, winch is as it wore involucrato by some lealy bracts : scales of the involucre 

 H ightly hirsute, usually glandular: outer pai)pus hardly longer than the breadth of 

 the ovary. (Involucre half an inch long.) — Nutt. in'l'mns. Am. Phil. Soc. vii. 317. 



Var. Bolanderi, Gray. Less glandular and mf)ro villous ; the obtuser leaves 

 densely so, sometimes canescently silky : involucre mostly leafy-bracted and more 

 pubescent : the conspicuous squamellate outer pappus longer. — C. Bolanderi, Gray 

 Proc. Am. Aead. vi. 543. — Both this and the, Jirst pass into 



Var. echioides, Gray. Stem and branches more slender and less leafy, the 

 headsonly hall as large and not leafy-bracted : outer pappus as in the last or less 

 conspicuous. — C. echioides, Bonth. Hot. Sulph. 25, li- PI. ]I.iitw. 31G. 



vpf «L*r ^''t^"' ""'^ ^'f "^y* •^'o"'''^'^ ^'"^r- «"ly tlieir scanty spcrinions of tlio original form 

 l^lT-T « V T- f '^'^'^'^rV S--^n Francisco to Noyo on the coast, Bolai^dcr, Kdhng. Var. 

 echioides Santa Cruz to San Diego, Jlinxh, Coulter, Ncioherry, Hartwcq, Boland^r, &c. - C. Bo- 

 frnW?l T "°. ^'^""^ ^'^ ih^Aehyra^a section, which is well marked bv its scanty inner and 

 truly chaffy outer pappus. The present species is in some fonns hard to distinguisli from 

 AT£,-J=;!;l;??'f?""'' ^",^^""^ly polymorphous species, extending from the eastern si.le of the 

 Mississippi to the coa^t of Oregon and to the State of Nevada ; therefore vor>- probably inhabiting 

 the nortliern part of Call ornia It is destitute of the scattered long hai,4 near the tip of the 

 disk-coroila, nnd the mvolucro is not glandular, but commonly minutely canescent. 



§ 2. Heads rayless : exterior pappus setulose, inconspicuous or obscure. — kymoDW, 

 Gray. {Ammodin, Nutt.) 

 2. C. Oregana, Gray. ]\Iuch branched, erect, a foot or two high, somewhat 

 hirsutely pubescent and rather viscid : leaves oblong or lanceolate, entire, with a 

 prominent midrib : heads paniculate : involucre almost glabrous, composed of 3 or 

 4 ranks of successively longer thin and acuminate scales, only their midrib green, 

 the innermost equalling the jiappus : corollas slender : akenivs narrow : exterior pap- 

 pus indistinct. — Gray, Proc. Am. Acad. vi. 543. Ammodia Orenana, Nutt. 1. c. ; 

 Torr. Pot. Wilkes Exp. t. 9. 



In sand or gravel along streams, mouth of Eel River {Kellogg), Calistom (E. L. Gireiu), and 

 north through Oregon. 



