152 LEGUMINOSAE. 



COLUTEA. Bladder Senna. 

 (Family Leguminosae). 



Shrubs: deciduous. Twigs mod- 

 erate, terete except for shortly 

 decurrentj lines from the nodes: 

 pith moderate, rounded, continu- 

 ous. Buds small, usually super- 

 posed and the upper promptly 

 developing into slender branches, 

 with 2 or 4 visible scales or 

 leaves. Leaf-scars alternate, 

 broadly crescent-shaped, much ele- 

 vated: bundle-trace 1 or 3, or the 

 middle one divided: stipules per- 

 sistent on the sides of the leaf- 

 cushion. 



Winter-character references: 

 C. arborescens. Bosemann, 54; 

 Schneider, f. 81, 139; Willkomm, 

 3, 7, 42, f. 69, C. orientals. 

 Schneider, f. 81. 



In a paper published in the 

 journal Linnaea in 1837, Ohlert 



shows that Colutea produces some thirty internodes in a year's 

 twig-growth. Half-a-dozen of these are preformed in the bud: 

 the remainder develop during the growing season. He notes 

 the striking contrast between this and the behaviour of, for 

 instance, Tilia, in whi-ch more preformed leaves are found in 

 the bud than are to be counted on the developed branch be- 

 cause of the abscission of its terminal parts. 

 Appressed-pubescent. (1). C. arborescens. 



Glabrescent. (2). C. cilicica. 



