188 COMPOSITE. BoLTOKiA. 



brous and somewhat glaucescent paniculately branched herbs, with the habit 

 of Aster. Leaves mostly vertical, lanceolate, sessile, entire, or the lower 

 rarely serrate, with scabrous and somewhat cartilaginous margins. Heads 

 rather small, loosely corymbose or paniculate. Rays white or purplish. 



1. B.asteroides (L'Her. I.e.): achenia broadly oval, glabrous; pappus 

 of 4 or 5 minute setulose teeth, similar in the disk and ray, deciduous ; heads 

 loosely corymbose; leaves lanceolate, entire, or the lower obscurely serrate. 

 —Ait. ! Kew. (ed. 1) 3. p. 197 ,• Michx. ! fl. 2. p. 132 ; Nees, Ast. p. 236 ; 

 DC! I.e. Matricaria asteroides, Linn. mant. p. 116. Chrysanthemum 

 Carolinlanum, Walt.! Car. p. 204. 



Pennsylvania, Bartram, {Linn.) and along the mountains to the Southern 

 States! — Heads larger than in B. diffusa, but rather smaller than in B. glas- 

 tifolia, which it closely resembles, and from which it is distinguished by the . 

 minute pappus. This would appear to be a rare species ; as we possess 

 only a single specimen, collected in Burke County, N. Carolina, by Mr. M. 

 A. Curtis ; and Elliott did not meet with it in the low country of the Southern 

 States. 



2. B. glastifolia (L'Her. 1. c.) : achenia obovate, broadly winged, often 

 slightly hairy; pappus of several very short bristles, and (especially in the 

 disk) with 2, or sometimes 3-4, more or less elongated slender awns ; heads 

 loosely corymbose ; leaves lanceolate, the lowest often serrate. — Ait.! I.e.; 

 Michx.! I. e. ; Willd. spec. 3. p. 2161 ,• Sims, hot. mag. t. 2381 ; Ell. sk. 

 2. p. 399 ; Nees, Ast. p. 235 ; Hook. fl. Bor.-Am. 2. p. 23 ,• DC. ! I. c. 



(3.? decurrens : leaves elongated lanceolate, rather thin, decurrent on the 

 stem; the broad decurrent portions usually terminated by short and triangu- 

 lar divaricate lobes, thus appearing sagittate. 



Swamps and wet places. Upper Canada, Pennsylvania ! and nearly 

 throughout the Southern and Western States ! fi. Wet prairies of Illinois, 

 Dr. Short! — Plant 3-7 feet high. Leaves 3-5 inches long, tapering to the 

 base, or oblanceolate. But in var. /5. which is perhaps a distinct species, the 

 leaves are of the same breadth throughout in the only specimen we have 

 seen, those of the branches closely sessile ; the cauline (upper) strikingly 

 decurrent. 



3. B. diffusa (Ell.) : achenia obovate, rather narrowly winged ; pappus 

 of several very short bristles, and 2 short subulate awns; heads (small) dif- 

 fusely paniculate ; branches and branchlets very numerous and slender ; 

 cauline leaves linear-lanceolate, entire ; those of the branches small, linear ; 

 those of the branchlets subulate. — Ell. sk. 2. p. 400 ; Hook, eompaii. to hot. 

 mag. 1. p. 97 ; DC! prodr. 5. p. 301. B. asteroides, Sims, hot. mag. t. 

 2554, ex DC 



Damp soil, throughout the Southern and Southwestern States from Georgia ! 

 to Western Louisiana ! common. Aug.-Oct. — Stem 2-7 feet high, very 

 diffusely branched from near the base. Heads not more than half the size of 

 the preceding : the achenia small in proportion ; the stout awns not half their 

 length. 



Subdiv. 2. Bellide^;, DC. — Pappus none, or coronifonn and minute, 

 32. BELLLS. Linn. ; Gcertn.fr. t. 168 ; DC. p)rodr. 5. p. 304. 



Heads many-flowered ; the ray-flowers pistillate, in a single series ; those 

 of the disk tubular, perfect. Involucre campanulale; the scales somewhat in 

 a double series, foliaceous, herbaceous, or somewhat membranaceous, equal. 



