LEGUMINOSAE. 



155 



CALOPHAOA. 

 (Family Leguminosae). 



Shrubs, or grafted as weeping 

 trees: deciduous. Twigs moder- 

 ate, terete; cortex exfoliating: 

 pith small, roundish, continuous. 

 Buds solitary, sessile, concealed 

 by the leaf-cushion, often develop- 

 ing the first season, with numer- 

 ous leaf-base scales evident as the 

 bud expands. Leaf-scars alter- 

 nate, minute, round or elliptical, 

 at the top of a greatly dilated 

 base that half-encircles the stem: 

 bundle-trace 1: stipules large, 

 brown. 



Calophaca is one of a consider- 

 able number of Leguminosae in 

 which the leaves disarticulate 

 from a much elongated and di- 

 lated base which persists on the 

 stem. Usually such persistent 

 leaf-bases are crowned by persist- 

 ent stipules. In Calophaca these are exceptionally large. Its 

 winter-buds are sheathed in similar notched leaf-bases so that 

 they resemble those of hybrid barberry, X Mahoberberis. 

 The winter-characters of G. wolgarica are pictured by Schnei- 

 der, f. 73. 



Stipules long (10 mm.): loosely hairy. C. grandiflora. 



Stipules shorter (scarcely 6 mm.): puberulent. 



(1). C. wolgarica. 



