Uvariodendron (Engl. & Diels) R.E.Fr.

Genus

Angiosperms > Magnoliales > Annonaceae

Characteristics

Shrubs or trees with an indumentum of simple hairs. Flowers hermaphrodite, solitary or fascicled, axillary on leafy shoots and/or also on the old wood, sessile or stalked; bracteoles 2–6, often forming an involucre in the case of sessile flowers. Sepals 3, valvate, free or united at the base, in most species not enclosing the petals in bud. Petals 6, in 2 whorls of 3, the outer valvate, and at length spreading, the inner valvate or somewhat imbricate above, open below, often remaining connivent at apex long after flowers have opened, free, mostly very thick and fleshy, often brittle, subequal. Stamens very numerous, linear; anther-cells lateral or extrorse; connective-prolongations capitate. Carpels numerous, cylindric, with numerous mostly biseriate ovules or in one species practically in 1 row; style very short or more developed, consisting of a plicate or involute lamina, the apical margin being the stigmatic surface. Monocarps indehiscent, ovoid, ellipsoid or broadly to narrowly cylindric, straight, subsessile or shortly stipitate, many-seeded, often constricted between the seeds. Seeds ± horizontal, ellipsoid.
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Petals 6, in two whorls, the outer valvate, the inner valvate above and open below, expanding and spreading at anthesis or the inner whorl remaining connivent at the apex, free, subequal, thick.
Sepals 3, valvate, free or united at the base, not enclosing the petals in bud, with plane margins, densely brown-or golden-sericeous outside, glabrous within.
Carpels ?, cylindric, with numerous ovules in two rows; style very short; stigma truncate, horse-shoe-shaped.
Stamens very numerous, linear, with thecae lateral or extrorse and connective-prolongations capitate.
Ripe carpels indehiscent, ovoid or ellipsoid to cylindric, straight, subsessile, many-seeded.
Bracteoles 2–6, usually biseriate, forming an involucre in sessile flowers.
Flowers bisexual, solitary or paired, axillary, sometimes on the old wood.
Shrubs or trees, not climbing, with simple hairs.
Seeds ± horizontal; aril absent.
Buds depressed-globose.
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Foliage retention deciduous
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