306 



Styracaceae. 



Styrax. Storax. 

 (Family Styracaceae). 



Shrubs: deciduous. Twigs 

 rounded, rather slender, zig-zag, 

 rough-scurfy: pith small, rounded, 

 continuous, green. Buds small, 

 sessile, naked, scurfy, superposed, 

 the end-bud lacking. Leaf-scars 

 alternate, 2-ranked, at first torn, 

 narrow and shriveled, finally 

 broadly crescent-shaped and less 

 raised with a central more or less 

 -, fragmented bund.e-trace: stipule- 



/ scars lacking. 



Winter-character references: 

 Styrax japonica. Shirasawa, 238, 

 pi. 2. S. Obassia. Shirasawa, 238, 

 pi. 2. S. officinalis. Schneider, 

 f. 117. 



The gum styrax of druggists is 

 net obtained from species of 

 though the genus gets its 

 name from that substance which 

 is produced by the Oriental equivalent, Liquidambar orient- 

 ale, of our sweetgum which derives its specific name from 

 the same substance. 



1. Twigs very slender: buds short (scarcely 3 mm.). 



S. americana. 

 Twigs stouter (2-3 mm.): buds rather long (4-6 mm.). 2. 



2. Twigs 2 mm. thick: bark not exfoliating. (1). S. japonica. 

 Twigs stouter (3 mm.): bark exfoliating. S. Obassia. 



