J UGLANDACEAE. 15 
PLATYCARYA. 
(Family Juglandaceae). 
Trees: deciduous. Twigs mod- 
erate or rather slender, terete, 
with fine lenticels: pith rounded, 
moderate, pale, continuous. Buds 
rather small, superposed, sessile, 
ovoid, with some 4 or 5 exposed 
scales. Leaf-scars alternate, 
shield-shaped: bundle-traces 5 or 
7: stipule-scars lacking. 
Twigs glabrous: buds puberulent 
or glandular. P. strobilacea. 
Though not much used in dec- 
orative planting, the Juglandaceae 
are effective occasionally as speci- 
mens or massed in the distance, 
and some of them are of rapid 
growth. The native hickories and 
walnuts furnish especially valu- 
able wood, the former almost in- 
dispensable in the manufacture of 
farm implements, and the latter— 
at one time the most used cabinet wood—the main reliance 
for gunstocks. An interesting popular account of the geo- 
logical history of the family, by Berry, is to be found in 
volume fifteen of The Plant World. 
Winter-character references: — Platycarya  strobilacea. 
Schneider, f. 135; Shirasawa, 257, pl. 6. 
Winter-characters to the principal Juglandaceae—Juglans 
and: Carya—are collected between the discussion of those two 
genera. The family is interesting anatomically because of the 
marked and characteristic differences between the solid pith 
of this genus and Carya in contrast with the chambered pith 
of Juglans and Pterocarya. 
