Genus 15.] 



THISTLE FAMILY. 



325 



8. Chrysopsis hispida (Hook.) Nutt. 

 Hispid Golden Aster. (Fig. 3659.) 



Diplopappns hispidus Hook. Fl. Bor. Am. 2: 22. 1834. 

 Chrysopsis hispida Nutt. Trans. Am. Phil. Soc. (II) 



7:316. 1841. 

 Chrysopsis villosa var. hispida A. Gray, Syn. Fl. 1: 



Part 2, 123. 1884. 



Lower than C. villosa, stem rarely over i high, 

 with spreading hirsute or hispid pubescence. Leaves 

 spatulate to oblong, entire, spreading, 9 // -i8 // 

 long, obtuse at the apex, narrowed at the base, 

 often into petioles half as long as the blade or 

 more; heads smaller, often more numerous; invo- 

 lucre not over 4" high, its bracts lanceolate, hirsute. 



In dry soil, Manitoba to Idaho, Kansas and Texas. 

 July-Sept. 



9. Chrysopsis Nuttallii Britton. 

 Nuttall's Golden Aster. (Fig. 3660.) 



Chrysopsis pilosa Nutt. Journ. Acad. Nat. Sci. Phila. 7: 



66. 1834. Not Erigeron pilosum Walt. 1788. 

 C. Nuttallii Britton, Mem. Torr. Club, 5: 316. 1894. 



Pilose-pubescent with soft hairs and minutely 

 glandular, i-2 high, branched above. Leaves ob- 

 long-lanceolate, mostly acute, i / -2^ / long, 2 // ~5 // 

 wide, entire, or the lower serrate or even incised; 

 heads few, 8 // -i2 // broad, terminating the branches; 

 involucre hemispheric, its bracts glandular-viscid; 

 achenes obovate. 



In dry soil, Kansas to Louisiana, Arkansas and Texas. 

 July-Sept. 



15. CHONDROPHORA Raf. New Fl. N. A. 4: 79. 1836. 



[Bigelowia DC. Mem. Comp. //. 5. 1833. Not Bigelovia Spreng. 1821.] 



Perennial stiff herbs, with alternate entire leaves, and corymbose-paniculate discoid 



heads of yellow flowers. Involucre oblong or campanulate, its bracts rigid and glutinous, 



imbricated in several series. Receptacle flat, generally foveolate, naked. Corolla regular, 



tubular, the limb 5-cleft. Anthers obtuse at the base. Style-branches flattened, their 



appendages lanceolate. Achenes oblong, somewhat compressed, 1-2-ribbed on each side. 



Pappus of 1 or 2 series of numerous capillary unequal bristles. [Greek, cartilage-bearing.] 



One, or perhaps two species, native of eastern North America. 



. t ' - 



i. Chondrophora nudata (Michx. ) Britton 



(Fig. 3661.) 



Chrysocoma nudata Michx. Fl. Bor.Am. 2: 101. 1803. 



Bigeloiuia nudata DC. Prodr. 5: 329. 1836. 



C. nudata Britton, Mem. Torr. Club, 5: 317. 1894. 



Glabrous, erect, simple, i-2^high. Lower 

 and basal leaves spatulate, obtuse, or obtusish, 

 3 / -6 / long, 3 // -6 // wide, attenuate into a mar- 

 gined petiole; stem leaves distant, small, linear 

 or subulate; heads numerous, 2 // -3 // high, 

 crowded in a compound terminal corymbose 

 cyme; involucre narrowly campanulate, acute 

 at the base, its bracts coriaceous, appressed, 

 linear-oblong, imbricated in 3 or 4 series, the 

 outer much smaller than the inner; achenes 

 short-turbinate; pappus-bristles rigid; edges of 

 the depressions in the receptacle prolonged into 

 subulate teeth. 



In moist pine-barrens, New Jersey to Florida and 

 Texas. Aug. -Oct. 



Ray less Golden-rod. 



