470 



SYNGEXESIA [Astehoide* 



37G. SERIC0CARPU8. Jtfm, Mi. p. 148. 



[Greek, Seiikos, silky, and Kaipo*) fruit ; descriptive of the akenes.] 



Heads few-flowered. Involucre oblong, or ovoid, with the leaflets 

 imbricated, broad, whitish and sub-cartilaginous at base, the apex her- 

 baceous, thickened and often spreading. Florets of the rat/ few (about 

 5), distant, broadish, — of the disk subcylindrie, with tiie tube and 

 limb confluent. Pappus simple, stiffish, scabrous, persistent. JJ/cenes 

 short, obversely pyramidal, densely silky -pilose. Receptacle small 

 alveolate, irregular. 



1. S. soLTiiAoiNEi-fl, Nee$. Stem smooth, angular, subsimple; leaveg 

 spatulate-linear, obtuse, entire, smooth, scabrous on the margin ; corymb 

 small, terminal, fastigiate; involucre oblong, subcylindrie, squarrose • 

 rays as long as the involucre. J\Ws, .'1st. p. 149. 



Aster solidagineus. Mx. *Am, 2. p. 108. Big el. Host. p. 308. 

 A. solidaginoidcs. ll'llld. Pers. Pursh, Ell. Beck, &c, 



SOLIDAGO-LIKE SeIUCOCATIPUS. 



Plant pale or yellowish green. Root perennial. Stem about 2 feet high, often 

 several from the same root, slender, angular, smooth, nearly simple, or with a 

 few short corymbose branches at summit. Leaves 1 to 2 inches long, and 2 to 4 

 or 5 lines wide, sublinear, or spatulate-linear, obtuse, entire, narrowed at basej 

 sessile, obscurely punctate and 3-nerved, smooth with the margin scabrous. Head* 

 of flowers mostly few, oblong, subcylindrie, or slightly turbinate, somewhat clus- 

 tered in a small terminal fastigiate corymb ; involucre smooth, the leaflets oblongi 

 obtuse, rigid, subcartilaglnous and whitish at base, the outer ones green and sub* 

 squarrose at apex ; rays white. Akenes clothed with hoary shining arpresscd 

 hairs ; pappus white. 



Hub. Moist woodlands: not very common. Fl. August— Sept. JV. October. 



Ohs. This has been found in various parts of the County,— but is by no means 

 common. 



2. S. coktzotdes, Nees. Stem slightly pubescent, terete, corymbose 

 at summit ; leaves elliptic, or lance-oval, acute at each end, ciliate, the 

 lower ones serrate towards the apex, narrowed to a petiole at base; 

 involucre turbinate, squarrose, mostly naked at base ; rays shorter 

 than the involucre. JVees, Jst. p. 150. 



Aster marilandicusv Mx. Jim. 2. p. 108. 



A. conyzoides. JVilld. Pers. Pursh y Ell. Bigel. Beck t &c. 



Co^IZA-LIKE Sf.RICOCAHPUS. 



Boot perennial. Stem 1 to 2 feet high, of on 2 or 3 from the same root, rather 

 slender, but rigid, terete, smnothish and often purple below, pubescent towards 

 the summit. Leaves I to 3 inches long, and I third of an inch to an inch and half 

 wide, varying from elliptic-lanceolate to lance-obovatc, somewhat scabrous aNwc 

 smoothish beneath, ciliate on the margin, the upper ones sessile and mostly entire 

 the radical ones coarsely and sparingly sorrnte towards the apexj tapering at 

 base to a margined ciliate petiole nearly as long as the leaf. Butas of flowers 

 Oblong, subturbinite ; branches r^uchish-pubescent ; involucre smooth, the leaf- 

 lets obi mg, often ra'her acute, whitish at base, green and subsqr.arr<>se at aj ex, 

 finely olli ate -serrulate on the margin j rays white. Akenes short, silky-villose; 

 jbtppus reddish-tawny. 



