118 Bulletin of the University of Texas 
globose heads, solitary or clustered in the axils of the leaves. 
Fruit a linear flattened pod pointed at both ends. 
In sandy and rocky soils Florida to Texas and Mexico. 
CASSIACEAE Link. Senna Family. 
Trees or shrubs with alternate, simple or compound leaves; 
some species armed with prickles. Flowers mostly perfect, 
in clusters, regular or irregular. Fruit a 2-valved or inde- 
hiscent pod. 
1. Leaves simple, rhomboidal, heart shaped at bas: 1. Cercis. 
2. Leaves pinnate. 
a. Leaves once pinnate. 
(1) The axis of the pinnae broad and 
winged, borne in _ fasicles, leaflets 
NUINETOUS! fe eS ae ae a ee ee 2. Parkinsonia. 
(2) The axis of the pinnae not broad and 
wineed, leaftléets:Tew . ... 6c ccuniockiiss «Doe 3. Cercidium. 
3. Leaves bipinnate or once pinnate on the same 
LTCC BoE h c tee ee hee ee Be eee 4. Gleditsia. 
CERCIS ‘1. > The Red Buds. 
Smail unarmed tree with alternate, simple, deciduous leaves 
which are round in outline and heart-shaped at base. Flowers 
red or purplish in axillary clusters on branches of preceding 
year, appearing before the leaves. Fruit a flattened, leathery 
pod. 
Leaves pointed at the apex, pods stalked.......... 1. C. Canadensis. 
Leaves rounded and blunt at the apex. 
Pod) HOR ASIA Keds 3:02 lee eee ioe eee eee 2. C. reniformis. 
1. Cercis Canadensis R. Red Bud. Judas Tree. A small 
tree with thin fissured bark, smooth branches, and slender, 
hight brown twigs. Leaves ovate-orbicular to reniform, pointed 
at the apex, rounded at base, bright green and smooth above, 
paler and hairy along the veins below. Flowers before the 
leaves in clusters of 4 to 8, purplish, pedicels somewhat elon- 
gated. Fruit a linear oblong pod which tapers at both ends, 
persistent until winter. . 
Ontario to Florida, west to Minnesota, Arkansas, and east- 
ern Texas. Principaily along streams and in rich bottom 
