348 



CAPRIFOLIACEAE. 



DIEBVILLA. 

 (Family Caprifoliaceae). 



Shrubs: deciduous. Twigs ter- 

 ete, straw-colored or brownish, 

 with 2 or 4 often crisp-puberulent 

 ridges decurrent from the nodes, 

 moderate: pith moderate, pale, 

 continuous. Buds often super- 

 posed, sessile, oblong, appressed, 

 with about 5 pairs of exposed 

 scales. Leaf-scars opposite or oc- 

 casionally in whorls of 3, crescent- 

 shaped, moderate, connected by 

 transverse lines: bundle-traces 3: 

 stipule-scars lacking. The linear 

 2-valved capsules persist. (In- 

 cludes Weigelia). 



Winter-character references: - 

 Diervilla grandiflora. Shirasawa, 

 279, pi. 12. D. japonica. Schnei- 

 der, f. 216; Shirasawa, 279, pi. 12. 

 D. rosea. Bosemann, 64. D. ses- 

 silifolia. Schneider, f. 216. D. 

 D. trifida; Lonicera Diervilla). 



Lonicera (D. canadensis 



Schneider, f. 216. 



1. Lower scales very much shorter than the bud. 



2. 



(Asiatic). 4. 



D. rivularis. 



Lower scales nearly as long as the bud. 



2. Twigs villous. 



Twigs glabrescent or merely velvety. 3. 



3. Twigs scarcely lined: capsule slender-beaked: 



sepals setaceous. D. Lonicera. 



Twigs 4-ridged: capsule with shorter beak and 



relatively short and broad sepals. (1). D. sessilifolia. 



4. Calyx with an evident tube. D. florida. 

 Sepals linear, distinct to the base. (2). X D. hybrida. 



