Bladder senna is a non-spiny deciduous shrub
growing to 15' tall with odd-1-pinnate, alternate leaves having 9-13
ovate to broadly elliptical leaflets that are hairless above and sparsely-hairy
beneath, mucronulate or emarginate-tipped, with small stipules. The
inflorescence is a few-flowered axillary raceme. The flowers are
papilionaceous, rather large and bright yellow, with a broadly cup-shaped
calyx having five short teeth, wings nearly as long to as long as the
keel, and a corolla with reddish veins. The keel is about 3/4"
long and is blunt at the apex, and there are nine united stamens and
one free. The fruit is an inflated, translucent and papery pod
to 1-1/2" that is indehiscent and contains numerous seeds. Bladder
senna is a spring and summer bloomer, native to Europe, and may be found
in waste or disturbed areas below 1500'.
Click here for Latin name derivations: 1) Colutea
Pronunciation: ko-LOO-tee-a ar-bore-ES-ens.
Click here for Botanical