Proceedings of the Ohio State Acadeniy of Science 129 



13. Salix viminalis L. Osier Willow. A small slender 

 tree or shrub with green twigs. Leaves long linear-lanceolate, 

 sparingly repand-crenulate or entire, revolute-margined, short- 

 petioled, glabrous above, silvery-silky beneath, 3-6 in. long; cap- 

 svlc narrowly ovoid-conic, acute. Cultivated for wicker-ware. 

 Native of Europe and Asia. 



14. Salix purpurea L. Purple Willow. A slender shrub 

 or small tree with smooth and very bitter bark, the branches often 

 trailing. Leaves oblanceolate or spatulate, acute, serrulate, nar- 

 rowed at the base, short-petioled, glabrous above, paler and some- 

 what glaucous beneath, 1^-2^ in. long ; capsule ovoid-conic, ob- 

 tuse, tomentose. Cultivated for wicker- ware. Native of Europe. 



Order, Myricales. 



Myricaceae. Bayberrv Family. 

 13. Myrica L. Bayberry. 



Shrubs or trees with alternate simple leaves without stipules. 

 Drupe globose or ovoid, its exocarp waxy. Flowers in catkins. 



I. Myrica cerifera L. Wax-myrtle. A slender dioecious 

 tree with gray, nearly smooth bark. In sandy swamps or wet 

 v/c^ods. Pa. and Md. to Fla., and Tex. north to Ark. 



Order, Juglandales. 



Juglandaceac. Walnut Family. 

 14. Juglans L. Walnut. 

 Trees with spreading branches, superposed buds, diaph- 

 ragmed pith with cavities, and odd-pinnate leaves ; monoecious. 

 Pruit a nut in a fleshy husk. Staminate flowers in aments. Seed 

 cf nut edible. 



\. Leaflets almost entire; nut rather smooth and thin-shelled; twigs 

 glabrous. /. regia. 



1. Leaflets serrate; nut rough, thick-shelled. 2. 



2. Petioles smoothish or puberulent ; axil of leaf without a hairy 



cushion below the buds ; dark brown or black, rough ; fruit glo- 

 bose, not viscid. /. nigra. 

 2. Ptetioles pubescent, sticky or gummy when young; axil of the leaf 

 with a hairy cushion below the buds : bark gray, the ridges 

 smooth on the surface: fruit oblong, viscid. /. cinerea. 



