SYNGENESIA. SUPERFLTJA. 161 



To add to the error of Michaux, Mr. Pursh says that the 

 leaves are very enth-e. In any other species, less singular, 

 the identity would have been impossible. S. humilis ap- 

 pears to be a variety of this species. 



33. * puheruleiita. Stem tall, perfectly simple, and in 

 common with the leaves and peduncles pulverulently pu- 

 bescent; leaves sessile, impunctate, lower ones elliptic, 

 serrate, the upper much smaller, obovate and entire, mar- 

 gin scabrous; raceme erect, solitary, compound, spiciform; 

 scales of the calix thickish, partly acute; rays elongated, 

 about 10. Hab. In Georgia and Florida.— Dr. Baldwyn. 

 — A species which niigiit ahiiost be confounded with the 

 preceding, though quite distinct. Stem 3 or 4 feet high, 

 attenuated, sometimes reddish. The lower leaves are 

 acute, and somewhat resemble those of Spiraa saUcifoUa. 



34. erecia? Herb. Banks, mss. Stem simple, 1 or 2 

 feet high, partly villous in common with the peduncles 

 and under side of the leaves; leaves all nearly equal, en- 

 tire, elliptic-lanceolate, subpetiolate, acute, and strongly 

 veined; racemes erect, axillar and terminal, 3 or 4 inche"^ 

 long, peduncles filiform, pubescent, naked; scales of the 

 c.ilix acute. Hab. In open swamps near Wilmington, 

 North Carolina. It may possibly be distinct from S. erec- 

 ia, as nothing certain can be derived from such vague 

 descriptions. This species is remaikublv low, and singu- 

 lar for the equality of the leaves, which 'are 2 or 3 inches 

 long, scarcely an inch wide, and subpetiolate. 



35. livida. 36. hirta- 37. Utlio-spermi-folia. 38. hispida. 

 59. cxsia. Stem glaucous. 40. fexicanUs. 41. macro- 

 phylla. Scarcely distinct from tlie following. 42. gloine- 

 rata. Lower leaves broad oval, and acuminate, serrate. 

 Nearly allied to Aster. 



43. * squarrosa. Robust; stem thick and pubescent 

 above; leaves smootl), lower ones very broad, spathulate- 

 oval, serrate, acute, margin scabroii.s, the upper sessile, 

 lanceolate-elliptic, entire; racemes glomerate, rigid and 

 pubescent; calix squarrose! manv-tiowered, ravs elongat- 

 ed, 10 or 12. HAB. On the rocky banks of the Rariton, 

 near New Brunswick, (New Jersey,) &c. According to 

 Muhlenberg's Catalogue, it exists also in Pennsylvania 

 and Georgia. Allied to ,S'. 4/r/c^fl.— Stem thick, '2 to 3 

 feet high, always simple; lower leaves dilated, upper 

 much smaller, very acute, subacuminate, sometiines 

 slightly scabrous on the upper side along the mid-rib. 

 flowers nearly as large as those of S. Asrida: racemes 

 axillary, thick and crowded, forming a compound spike. 

 Seeds smooth. This is one of the finest species, and dis' 

 tinguished from all others by its squarrose culix. 

 02 



