300 PENTANDRIA. DIGYNIA. celtis. 



Schult. Gen. 850. Nat. Ord. Amentace^ /?^5^. 



Ul M A c EiE Mi rbel? Nettle-tree. Hack-berry. 

 1. C. occidental^ L. : leaves ovate, acuminate, equally 

 serrate, unequal at the base, scabrous above, pubescent be- 

 neath ; flowers subsolitary. IV ill d. Spec. IV. p. 994. 

 Duham. Arb. 1. t. 53. Mich. F/. II. p. 249. Pursh 

 FL I. p. 200. Elliott Sk. I. p. 335. M i c h, fil. Jrh. 

 III. p. 45. t. 9. Walt. Car. }^.'25Q. R o em. ir S c hull. 

 VI. p. 307. 



A middle-sized tree. Leaves alternate, 3 — 4 inches long, petio- 

 late, niuch acuminate, very unequal, and a little cordate at the 

 base ; serratures acuminate and uncinate. Flowers small, ap- 

 pearing before the leaves are expanded, axillary ; lower ones 

 often ill threes; upper ones solitary; fiedicels longer than the 

 ptdoles. Calyx greenish-white ; segments ovate, obtuse. 

 Stamens rather shorter than the calyx. Anthers oblong, 2- 

 celled. Styles (stigmas ?) much exserted, thick, spreading 

 and incurved, glandular. Drufie nearly globular, obscure- 

 purple ; pulp thin, sweet. jVut hard, 1 -seeded. 



Hab. In woods, particularly in rocky situations on the banks of 

 rivers. May. Beaver-wood. Hoo/i-as/i. 



Mi c h au X the younger, thinks this tree is not found 

 north of the Connecticut River. 



2. C. crassifolia Lam,: leaves ovate, acuminate, un- 

 equally serrate, subcoriaceous, scabrous on both sides, unequal 

 at the base ; peduncles mostly 2-flowered. Lam. Enc. IV. 

 p. 138. Willd. Spex.W.^.^'db. P ur s h FL I. p. ^00, 

 Mxch. fil. Arb. III. p. 47. t. 9. R o em. ir S c hu 1 1. VI. 

 p. 307. C. cordifolia Duham. Arb. II. t. 9. 



A smaller tree than the preceding. 



Hab. On the banks of the Delaware, above Philadelphia, which 

 appears to be its north-eastern limit. Mi c li. Haclc-berry. 

 Scarcely distinct from C. occidentalis. 



3. C. pumila Ph. : leaves ovate, acuminate, equally ser- 

 rate, unequal at the base, smoothish on both side? ; the 

 younfjer ones only pubescent; peduncles mostly 3-flowered ; 

 fruit solitary. P ur s h Fl. \. p. '200. R o em. ^ S c hu 1 1. 

 VI. p. 307. C. occidentalis ^. pumila M u h I. Cat. p. 100 ? 



A low bush, flowering at the height of 2 feet. Leaves nearly as 

 broad as long, occasionally without serratures, often cordate- 

 ovate, very little acuminate, and almost perfectly smooth on 

 both sides. Berries solitary, brown and glaucous. JSfu 1 1. 



Hab. On the banks of rivers. Maryland and Virginia. Pursti. 



199. ERYNGIUM. L. 

 Flowers capitate. Receptacle paleaceous. Lwo- 



