440 CARDUACEAE. 



borne at the ends of the branches ; involucre about 6 mm. long, its bracts lance- 

 olate, acuminate or apiculate; flowers white or pink; achenes resinous. 



Marshes. Gi'eat Bahama, Andros, and New Providence : — eastern continental 

 North America ; \Yest Indies ; continental America south to Argentina. Climbing 

 Hempweed. 



"5. CHRYSOPSIS Nutt.; Ell. Bot. S. C. & Ga. 2: 333. 1824. 



Perennial herbs, with alternate sessile entire leaves, or the basal ones 

 dentate, and large many-flowered heads of both tubular and radiate yellow 

 flowers (rays wanting in some western species)^ loosely corymbose, or solitary 

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

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

 flat, foveolate. Ray-flowers pistillate. Disk-flowers mostly all perfect. Pappus 

 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 narrow, somewhat flattened, their 

 appendages linear or subulate. [Greek, golden aspect.] About 20 species, of 

 North America and Mexico. Type species: I^iula gossypina Michx. 



1. Chrysopsis graminifolia (Michx.) Ell. loc. cit. 334. 1824. 



Inula graminifolia Michx. El. Bor. Am. 2: 122. 1803. 



Slender, corymbosely branched above. Leaves 3-5-nerved, shining, the 

 basal ones 7-30 cm. long, 4-10 mm. wide, the upper much smaller, and the 

 uppermost subulate and erect; heads several or numerous, about 1 cm. broad, 

 solitary at the ends of the branches; involucre campanulate, its bracts glabrate; 

 achenes linear-fusiform. 



Pine-lands of Great Bahama : — southeastern United States. Grass-leaa^ed 

 Golden Aster. 



6. ASTER L. Sp. PI. 872. 1753. 



Perennial or rarely annual, mostly branching herbs, with alternate leaves, 

 and corymbose or paniculate (rarely racemose or solitary) heads of both 

 tubular and radiate flowers. Involucre hemispheric, campanulate or turbinate, 

 its bracts various, imbricated in several series, the exterior usually smaller 

 and shorter. Receptacle flat or convex, generally foveolate. Ray-flowers white, 

 pink, purple, blue, or violet, pistillate. Disk-flowers tubular, perfect, their 

 corollas 5-lobed, usually yellow and changing to red, brown, or purple. Anthers 

 obtuse and entire at the base. Style-branches flattened, their appendages 

 subulate, lanceolate or ovate, acute. Pappus-bristles slender, numerous, sca- 

 brous or denticulate, usually in 1 series, sometimes in 2 series. Achenes 

 mostly flattened and nerved. [Greek, star.] A genus of not less than 250 

 species, most abundant in North America. Type species: Aster Amellus L. 



Rootstocks tuberous. 



Inflorescence sub-racemose or narrowly thyrsoid ; leaves oblong. 1. .4. lucayanus. 

 Inflorescence corymbose ; leaves, except lower, reduced to ap- 



pressed scales. 2. A. adnatus. 



Rootstocks not tuberous ; roots of thick fibres. 

 Leaves all linear, fleshy. 



Involucral bracts abruptly acute. 3. A. Bracet. 



Involucral bracts gradually acuminate. 4. A. exilis. 



Leaves not fleshy ; the basal ones oblong to oblong-lanceolate. 5. A. hahamensis. 



