Usually trees, with stellately tomentose
branches. Leaves simple, opposite-decussate or ternate, broadly elliptic,
subsessile or not. Inflorescence large, terminal, dichotomously branched
panicles. Calyx campanulate, 5-7 lobed, much enlarged or inflated in fruits,
persistent. Corolla hypocrateriform, white or blue, with short, cylindrical
tube, straight to reflexed, 5-7 lobed. Stamens 5-6, exserted, equal, inserted.
Ovary 2-carpellate, 4-loculed, with one ovule in each locule. Fruits
drupaceous, rounded, obscurely 4-lobed, completely enclosed by the enlarged
calyx. Seeds erect, oblong, exalbuminous.