GENUS 14. 



THISTLE FAMILY. 



7. Chrysopsis hispida (Hook.) Nutt. Hispid 

 Golden Aster. Fig. 4201. 



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

 Chrysopsis hispidus Nutt. Trans. Am. Phil. Soc. (II. ) ^ : 



316. 1841. 

 Chrysopsis villosa var. hispida A. Gray, Syn. Fl. i : Part 



2, 123. 1884. 



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

 spreading, sparse or copious, hirsute or hispid pu- 

 bescence, sometimes viscid. Leaves spatulate to 

 oblong, entire, spreading, g"-iS" 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; involucre not over 4" high, its 

 bracts lanceolate, hirsute; achenes 3-5-nerved. 



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

 Arizona. Consists of several races, differing in size, 

 pubescence and leaf-form. July-Sept. 



8. Chrysopsis pilosa Nutt. Nuttall's Golden 

 Aster. Fig. 4202. 



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



66. 1834. 

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



Pilose-pubescent with soft hairs and minutely glan- 

 dular, i-2 high, branched above. Leaves oblong- 

 lanceolate, mostly acute, i'-2$' long, 2"-$" wide, 

 entire, or the lower serrate or even incised; heads 

 few, 8"-i2" broad, terminating the branches ; invo- 

 lucre hemispheric, its bracts glandular-viscid; achenes 

 obovate, 10-nerved. 



In dry soil, Missouri and Kansas to Louisiana, Arkan- 

 sas and Texas. July-Sept. 



15. CHONDROPHORA Raf. New Fl. N. 



A. 4:79. 1836. 

 [BIGELOWIA DC. Mem. Comp. pi. 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, i-2-ribbed on each side. 

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

 Two species, native of eastern North America, the following typical. 



i. Chondrophora nudata (Michx.) Britton. 



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



Bigelowia 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 margined 

 petiole; stem leaves distant, small, linear or subu- 

 late; 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. 



Chondrophora virgata (Nutt.) Greene, with nar- 

 rowly linear basal leaves, or some of them linear- 

 spatulate, though originally cited by Nuttall as from 

 New Jersey, is not definitely known from north of 

 North Carolina. 



Rayless Golden-rod. 



4203. 



