152 LEGUMINOSAE. 
CoLuTEA. Bladder Senna. 
(Family Leguminosae). 
Shrubs: deciduous. Twigs mod- 
erate, terete except for shortly 
decurrent/ 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, £. 69, C. orientalis. 
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 which 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, 
