A3TER. COMPOSIT.E. 127 



length much branched, racemose or paniculate, rarely corymbose : leaves serrate or en- 

 tire (^the radical spatukde, obovate, or oblong) ; the cauline sessile, usually tapering at 

 the base. — Dumosi. 



t Heads small : rays often short. 



44. A. racemosus (Ell.): scabrous-pubescent; stem raceinosely much 

 branched; the heads spicate-racemose and mostly crowded towards the sum- 

 mit of the long and slender erect branches ; leaves rather rigid, linear, ses- 

 sile, entire, mucronulate, with minutely serrulate-scabrous margins ; those 

 of the branches short and scattered, spreading, linear-subulate or lanceolate ; 

 scales of the glabrous involucre subulate-linear, very acute, imbricated in 

 4 or 5 series, somewhat spreading, the innermost fully as long as the disk ; 

 rays very short. — Ell. ! sk. 2. p. 348. 



Damp or dry soil, Paris Island, South Carolina, Elliott .' Florida, Z)r. 

 Leavenworth ! Sept.-Oct. (Ell.) — Stem 2-3 feet high, erect, producing very 

 numerous (rather strict ? and mostly simple) slender virgate branches, along 

 the upper part of which the small heads (scarcely as large as in A. multiflo- 

 rus) are disposed, on peduncles 1 to 3 lines long, or seldom longer; forming 

 either crowded or often loose spicate racemes, 3-5 inches long; the lower 

 heads shorter than the leaves which subtend them. Lower leaves apparent- 

 ly 2-3 inches long, and 2-3 lines wide; those of the branches 4-2 lines long, 

 with somewhat hispidly scabrous margins (under a lens). Scales of the 

 involucre rather rigid, nearly glabrous, numerous; the exterior shorter; 

 the innermost somewhat membranaceous, in the young state manifestly 

 longer than the disk, spreading above. Rays very small, linear, pale pur- 

 ple, scarcely exserted beyond the disk or the involucre. Achenia minutely 

 pubescent. — A very distinct species, which we have only seen from the 

 sources mentioned above. 



45. A. Baldwinii : scabrous-pubescent throughout, stem paniculate-com- 

 pound ; the heads solitary or loosely racemose on the branchlets ; leaves 

 rigid, closely sessile, partly clasping, entire, very scabrous above, mucronu- 

 late; the cauline ones oblong-linear ; those of the branches and branchlets 

 short, erect, oblong-lanceolate or ovate-subulate, acuminate-mucronate ; 

 scales of the involucre linear, acute, minutely pubescent, rather loosely 

 imbricated in 3 or 4 series. 



a. leaves appressed and crowded on the branchlets ; scales of the involu- 

 cre narrowly linear, very acute. 



(i, leaves more scattered on the branchlets; scales of the involucre broader, 

 acute. — A. coridifolius, Hook.! compan. to hot. mag. 1. f. 97 (partly), not 

 of Miclix. 



Dry soil? a. Georgia, Baldwin! (v. sp. in herh. Schiveinitz, now herb, 

 acad. Philad. ; the specimens mixed with A. coridifolius and A. ericoides.) 

 (3. Jacksonville, Louisiana, Drummond! New Orleans, Dr. In galls ! — Plant 

 more closely allied to A. dumosus /3. coridifolius than to any other spe- 

 cies, nearly similar in habit, the size and disposition of the heads, &c. ; 

 differing, however, in its rough or even minutely hispid pubescence, more 

 acute and cuspidate branch-leaves, and especially in the (fewer) acute scales 

 of the involucre. It may also be compared (especially var a.) with the spe- 

 cies of our section Brachyphylli), which it resembles in the short and nearly 

 uniform upper leaves, which are mostly broadest at the base and partly 

 clasping, and in the short rough pubescence; but the involucre, achenia, &c. . 

 are abundantly different. The fully developed branches of A. azureus (with- 

 out the lower leaves) somewhat resemble var /:J. of this species ; but they 

 may be distinguished by their larger heads, with the scales of the turbinate 

 involucre much more numerous, broader, and appressed, &c. The radical 

 and lowest cauline leaves are unknown to us : those of the stem are an inch 

 to an inch and a half long ; those of the branches gradually reduced to one 



