STYBAGACEAE. 



305 



PTEROSTYBAX. 

 (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, 

 f. 87. 



Pterostyrax is considered not 

 generically different from Halesia 

 by some botanists, and, as its 

 generic name indicates, it bears 

 winged fruits like Halesia. 



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. 



