COMPTONIA 61 



COMPTONIA L'Her. (Myricaceae) 



Low pubescent deciduous shrub, with fragrant leaves, fruit 

 and twigs. Fruit a conical hard smooth nut, surrounded by 8 long 

 linear bracts persisting as a sort of bur. 



1. C. peregrina (L. ) Coult. Sweet Fern. ( Myrica asplenifolia 

 L.). A shrub 3-6 dm. high, the branches erect or spreading; twigs 

 slender, resinous-dotted when young; pith small, solitary, sessile, 

 ovoid, with about four exposed scales; end-bud absent; leaf-scars 

 alternate, 3-sided, somewhat raised; bundle-traces 3; stipule- 

 scars small. The leaves are sweet-scented and fern-like in ap- 

 pearance; they are deciduous in winter but a few withered ones 

 may generally be found. Open woodlands and barrens. Nova Scotia 

 to Manitoba, south to Minnesota, Indiana and in the mountains to 

 Georgia and Tennessee (Fig. 40). 



JUGLANS L. (Juglandaceae) 



Trees with spreading branches, superposed buds, fragrant 

 bark and brown chambered pith. Leaf-scars alternate, shield- 

 shaped or 3-lobed, large; bundle-traces in 3 compound groups; 

 stipule-scars none. The fruit, present in winter, may be classed 

 as a tryma (see p. 11). 



a. Terminal bud oblong, elongated; 



leaf-scar with a downy line across the 



top; pith dark brown. 1. J. cinerea 



a. Terminal bud ovoid or subglobose; 



leaf- scar notched at top, without 



a downy line; pith light brown. 2. J. nigra 



1. J. cinerea L. Butternut . White Walnut. A tree 16-30 m. high, 

 6-9 dm. in diameter, with an open crown of spreading branches; 

 bark gray, on old trunks divided by fissures into lighter flat-topped 

 ridges; leaf-scars not notched; pith dark brown. Rich woods. New 

 Brunswick to North Dakota, south to Georgia and Arkansas (Fig. 41). 



2, J. nigra L. Black Walnut. A handsome tree 20-35 m.high, 

 6-18 dm. in diameter; crown round, open; bark dark brown with 

 deep furrows; leaf-scars notched at the top; pith light brown. Rich 

 woods, Massachusetts to Minnesota, south to Georgia and Arkansas 

 (Fig. 42). 



CARYA Nutt. (Juglandaceae) 



Deciduous trees with close or shaggy bark, terete twigs and 

 continuous pith. Buds large, sometimes stalked, often superposed. 

 Leaf-scars alternate, shield-shaped or 3-lobed, large; bundle- 

 traces numerous, mostly in 3 more or less definite groups. The 



