OLEACEAE. 



313 



SYRINGA. Lilac. 

 (Family Oleaceae). 



Shrubs, exceptionally tree-like: 

 deciduous. Twigs moderate or 

 slender, usually somewhat 4-lined 

 or 6-sided: pith moderate, homo- 

 geneous, roundish, pale. Buds 

 solitary or exceptionally collater- 

 ally multiple, sessile, ovoid, mode- 

 rate, with about 4 pairs of scales, 

 the end-bud frequently absent and 

 the branches then forking. Leaf- 

 scars opposite, crescent- or shield- 

 shaped, raised, rather small: 

 bundle - trace 1, transverse and 

 compound: stipule-scars lacking. 

 Winter-character references: - 

 Syringa amurensis. Schneider, f. 

 212. 8. chinensis. Bosemann, 66; 

 Schneider, f. 211. 8. japonica. 

 Schneider, f. 212; Shirasawa, 277, 

 pi. 11. 8. josikaea. Schneider, f. 

 211. 8. ollata. Schneider, f. 210. 



8. persica. Bosemann, 66; Schneider, f. 211. 8. pubescens. 



Schneider, f. 210. 8. vulgaris. Bosemann, 66; Pant, 46, f. 



51; Schneider, f. 210; Shirasawa, 277, pi. 11; Ward, 1:14, f. 



5, 42, 157, f. 74; Willkomm, 46, f. 79; Zuccarini, 8, pi. 5. 



1. Bud-scales fleshy. (Common lilac). (1). S. vulgaris. 

 Bud-scales quickly drying. 2. 



2. Twigs slender: lateral buds compressed. (2). S. persica. 

 Twigs rather stout: buds plump. (3). S. villosa. 



