COMPOSITAE --(eOMPOSITE FAMILY) 491 



spherical or subglobose, 12-16 mm. broad, the numerous bracts with long, 

 slender, rnore or less squarrose grefen tips:' rays numerous, long^ golden- 

 yellow: achenes all turgid, thoSe of the ray trigonous, of the disk somewhat 

 compressed and 2-edged; bristles of the pappus 3 in the ray, 2 in the disk, all 

 short, slender for the genus, glabrous. — Dry hills; Colorado and New Mexico. 

 9. Grindelia scabra Greene,' Bull. Torr. Bot. Club 25: 120. 1898. Peren- 

 nial, crisped-pubescent or subscabrous; 'stems l-^everal from the woody root, 

 2^ dm'.' hi^i lowest leaves oblancedlaite, petiolate; those of the branches 

 oblong, sepsile by a somewhat clasping base; all sharply but not deeply 

 spinulose-serratfe: hemisphericar involucres -of very nvimerous bracts, all with 

 long,' linear-subulate, scarcely glutinous, suberect herbaceous tips: rays 

 golden-yellow: achenes very small, somewhat compressed-pyriform; bristles 

 of pappUs 2 or 3, scabrous-serrulate on the margins below. — New Mexico And 

 probably in Colorado. 



8. CHRYSOPSIS Nutt. .Golden Asteh; 



Perennial herbs, with alternate sessile leaves and large many-flowered 

 heads of both disk and radiate yellow flowers corymbose or sohtary at the 

 ends of the branches. Involucre campanulate to hemispheric, the bracts 

 narrow, imbricated in several series, the outer shorter. Receptacle usually 

 flat, foveolate.j Ray-flowers pistillate; disk-flowers mostly all perfect. Pap- 

 pus double in both the disk- and ray-flowers, the inner of numerous rough 

 capillary bristles, the outer of smaller or minute scales or bristles. Achenes 

 flattened, oblong-linear or obovate. Style branches harrow, somewhat' flat- 

 tened, their appendages linear or subulate. 



Decidedly viscid or glandular, this character more noticeable than the 

 scanty hispid or hirsute pubescence.. 

 Uppermost feaves scarcely reduced,, ovate to oblong^ . . . 1,. C. resinolens. 

 Uppermost leaves greatly reduced, lanceolate to linear . . 2. C. Viscida. 



Scarcely viscid or glandiilar, this character less noticeable than the 

 pubescence. i 



Pubescence mostly short,, hisroid and more or less spreading; stems 



ciliate-hirsute; leaves oblanceolate, petioled except the upper- ' 



niost. 

 Stems tufted, simple below, corymbose-paniculate at summit. 



Plant green but sometimes pale 3. C. arida. 



Plant canescent, often densely so . . . . . . . 4, C. hirsutissima 



Stems branched from the base upward . . , .'.■.' 5. .,C, hispida. 

 Pubesceince ap.pressed, at least on the leaves; that of the stems often • , 



.. hirsute-ciliate.. 

 ■ ■ ^ Leaves all n^rro\ypd to. a slender petiole, except the uppermost; 



lower leaves early deciduoiis. 



Pubescence short, 'fine and. appressed; stems branched above; 



heads solitary or few . v - • • . . , 6, 0. Bakeri, 



, Pubescence coarser, villous and more or less spreading. ' ' ' 



'■ Sterns freely branched, with numerous heads ._ . • . 7. C. villosa. 

 Stems simple; heads solitary or. few at the summit . . ; ; 1 8. C. ^uinila. : 

 Leaves sessile or subsessile except the lower which are early de- ,' 



ciduous. . . , .'..... 



Stems Jhort (3-15 cm.), depressed-spreading; leaves 1-2 cm. ' 



long' '.' . . . . ' . ,. . . . i>,, 9. C. depressa. 

 Stems longer (20-30 cm.), assurgent or suberect; leayes 3-7 

 cmi long, ....,., 

 Heads few, sessile, subtended by foliar bracts and crowded 



into a dense terminal cluster . . ,. ' ._ '. 10.,,C. fulcrata. 



Heads more numerous, sessile or peduncled, usually in an 

 ample fastigiate corymb. 

 Plant green, often pale, more or less soft-hirsute or even 



hispid . . J . 11. 0. folio:^. . 



■Plant canescent, often silky- villous, or, appressed long- 



str^gose . r . . . . . . . .12. C. mollis. 



1. Chrysopsis resiiiolens A. Nels. Bull. Torr. Bot. Club. 28: 232. 1901. 

 _Green, resin-sceiited^ root woody; the crown bearing few to many ascending 

 or Suberect stems; stems 2-4 dm. high, very leafy, sparsely hispid^ciliate and 

 minutely glandular or resinous: leaves with mmute gland-tipped hairs or 

 dotted with resinous particles; hispid-ciliate especially on the margins; the 



