348 CAPRIFOLIACEAE. 
DIERVILLA. 
(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, pl. 12. D. japonica. Schnei- 
der, f. 216; Shirasawa, 279, pl. 12. 
D. rosea. Bosemann, 64. D. ses- 
silifolia. Schneider, f. 216. D. 
Lonicera (D. canadensis; D. trifida; Lonicera Diervilla). 
Schneider, f. 216. 
i. 
2. 
3. 
Lower scales very much shorter than the bud. 2. 
Lower scales nearly as long as the bud. (Asiatic). 4. 
Twigs villous. D. rivularis. 
Twigs glabrescent or merely velvety. 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. 
. Calyx with an evident tube. D. florida. 
Sepals linear, distinct to the base. (2). < D. hybrida. 
