STYRACACEAE. 305 
PTEROSTYRAX. 
(Family Styracaceae). 
Shrubs, glabrescent or more or 
less microscopically _ stellate- 
scurfy: deciduous. Twigs round- 
ed, rather slender: pith moderate, 
rounded, continuous, white. Buds 
moderate, sessile, usually _ soli- 
tary, the terminal elongated and 
hairy and naked, the lateral ovoid, 
glabrate, with 2 exposed _ scales. 
Leaf-scars alternate, 2-ranked, 
finally broadly crescent-shaped, 
somewhat raised: bundle-trace 1, 
indistinct: stipule-scars lacking. 
Winter-character reference to 
Pterostyrax hispida:—Schneider, 
Ewe. 
Pterostyrax is considered not 
generically different from Halesia 
by some botanists, and, as its 
generic name indicates, it bears 
winged fruits like JHalesia. 
Though they do well in the South, its species are even less 
dependable in the North than the silver bells. 
Twigs with quickly shredding gray bark. P. hispida. 
