IN THEIR WINTER CONDITION. 13 



'21 GYMNOCLADUS, Lam. Diet, i, 1783. 



G DIOICA, (L.) Koch, Dend. 1869-73. GuUandina dioim, L. Spec. 

 1753. Qymnocladus Cana-demis, Lam. 1. c. 



Kentucky Coffee Tree. 



A medium tree with reticulately roughened bark, chocolate pith, 

 large, light drab twigs, glabrous, but roughened by numerous prominent 

 lenticels. The large, V-shaped leaf-scars, five-ranked, with three or five 

 bundle-scars, and obsolete stipule-scars. Terminal bud none; lateral 

 two or three superposed, the upper a short distance above the others, all 

 dark pubescent, low and circular, surrounded by an incurved rim of the 

 bark. Infrequent in lowland woods. 



22 GLEDITISI A, L. Gen. Ed. 2, 1742; Spec. 1753. Gleditschia, Scop. 1777. 

 G. TRIACANTHOS, L. Spec. 1753. . Honey Locust. 

 A large tree with close dark bark, green or light gray, glabrous, sul- 



cate twigs flattened at the nodes, five-ranked, horse-shoe shaped, usually 

 somewhat three-lobed, prominent leaf-scars, three bundle-scars and 

 minute or obsolete stipule-scars. Terminal buds none; lateral several 

 superposed, the lower minute and seen only in longitudinal sections 

 through node, fehe uppermost low and rounded A short distance above 

 the buds there is a smooth re'd or brown more or less branched thorn, the 

 branches in the axils of minute scales. Much branched thorns usually 

 occur in fascicles on the trunk or not infrequently the tree is entirely 

 unarmed. The branchlets are often nodulose from the developement of 

 very short rounded twigs which bore fascicled leaves. Common in low- 

 land woods. 



23 PRUNUS, Tourn. lust. 1700; L. Spec. 1753. 



Shrubs or small trees with glabrous twigs, five-ranked leaf-scars, 

 three bundle-scars and small stipule scars 



Twigs and buds dark steel-gray, dull P. Virginiana. 



Twigs and buds red brown, shining. 



These medium P. Americana. 



Small P. angustifoUa. 



P. AMERICANA, Marsh. Arb. 1785. Wild Plum. 



The branches usually bear stunted thorn-like twigs or branchlets 

 which are provided with leaf-scars. These semi-oval or arcuate. Ter- 

 minal buds none; lateral appressed, acute, single or with two additional, 

 collateral, diverging flower buds. Scales several, ovate, obtuse. Infre- 

 quent in thickets, along fences, etc. 



P. ANGUSTTFOLTA, Marsh. Arb. 1785. P. Chicasa, Michx. Fl. 1803. 



Chicasaw Plum. 



Differs from P. Americana in having more slender twigs, smaller tri- 

 angular-pointed buds with scales glabrous or somewhat pubescent. A 

 shrub common on sand hills south of Manhattan. 



