IN THEIR WINTEB CONDITION. 9 



5 AILANTHUS, Desf. Act. Acad. Paris, 1786. 



A. glandulosa, Desf. 1. c. Tree of Heaven. 



A tree cultivated for shade and escaped in places. Pith large, choc- 

 olate-brown, twigs very large, light brown, pubescent and glaucous; large 

 leaf-scars five-ranked, from V-shaped to triangular heart-shaped; bundle- 

 scars numerous, frequently aggregated in about live areas; buds single, 

 low, scarcely raised above the epidermis; scales about two, rounded and 

 pubescent; terminal buds none. Native of China. 



CELASTRUS.L. (Jen. 1737; Spec. 1753. 



C. scandens, L. Spec. 17-k!. Bitter-sweet. 



A twining vine with white pith, smooth light gray twigs, eight- 

 ranked, semicircular leaf-scars, with bundle-scars aggregated in a central 

 mass. The almost horizontally diverging buds are 1 to 2 mm. long, with 

 the two outer, keeled, brownish scales enclosing several smaller ones. 

 Scarlet fruit persistent. Common. 



7 EVONYMUS, Tourn. Inst. 1700; L. Spec. 1753. 



E. atjiopurpureus, Jaeq. Hort. Vind. 177± Wahoo. 



A rather tall shrub with whitish, rhomboidal pith, smooth, green, 

 four-angled twigs and white, semicircular, opposite leaf-scars with one 

 bundle-scar. Terminal bud with two or three pairs of glabrous scales; 

 lateral very small and appressed with one pair of scales. Fruit persist- 

 ent. Not common. 



8 RHAMNUS, Tourn. Inst. 1700; L. Spec. 1753. 



R. lanceolata, Pursh, Fl. 1814. Buckthorn. 



A shrub with white pith, glabrous, gray twigs, small oval or arcuate, 

 four-ranked leaf-scars, with one bundle-scar, and stipule-scars just above 

 the angles of the leaf-scar. Buds pointed, appressed, about 3 mm. long, 

 with several brown, glabrous scales. The phyllotaxy can be compared 

 to that of decussate leaves in which one leaf of each pair is some distance 

 above the other. Rare. 



CEAXOTHUS, L. Act. Soc. Ups. 1741; Spec. 1753. 



C. ovatus, Desf. Arb. ii, 1809. Red-root. 



A low shrub with pubescent, gray or red-brown twigs, small, eight- 

 ranked, semi-oval leaf-scars, one horizontal bundle-scar, and frequently 

 persistent awl-shaped stipules. The scales of the globose, densely cot- 

 tony-villous buds can not be easily distinguished. Common in upland 

 woods and rocky hills. 



10 YITIS, Tourn. Inst, 1700; L. Spec. 1753. 



Woody vines climbing by forked tendrils placed opposite the leaf scais. 

 Twigs brown and striate, the bark on the older portions becoming 

 shreddy. Leaf scars semicircular to crescent-shaped, the surface irreg- 

 ular, and the bundle-scars obscure. Buds obtuse, the two or three smooth 

 brown scales frequently exposing the densely pubescent young leaves. 



