Triumfetta L.
Contenido
Descripción
Shrubs or trees. Leaves alternate, petiolate, stipulate, the stipules usually large, persistent, rarely fugacious, the blade 3- to 5-lobed or undivided, the venation palmate, 5- to 7-costate at the base. Inflorescences hermaphrodite or gynodioecious, usually axillary (terminal in few species), consisting of numerous aggregate dichasia. Flowers either hermaphrodite or pistillate, staminate ones not known, hypogynous, 5-merous; sepals 5, valvate, free, with apical appendages; petals 5, sometimes absent, free, imbricate, 3- to 5-nerved, shorter than the sepals, usually ciliate at the base (claw); gonophore bearing 5 spherical or elongate glands mani- fest, absent in some species, usually crowned by a ciliate, rather membranaceous ring (urceolus) surrounding the stamens; stamens 5-60 in hermaphrodite flowers, staminodial or absent in the pistillate, borne cyclically on the enlarged gonophore, with 2 thecous, 4-celled, introrse, longitudinally dehiscent anthers, the filaments free, usually glabrous, sometimes pubescent at the base, often with retrorse serrations; ovary wholly superior, sessile on the gonophore (except in T. Mexiae, with very short gynophore on the gonophore), ellipsoid to orbicular, covered with many short, either erect or recurved, hyaline spinules, 2- or 3-loculate, each with 2 anatropous collateral pendulous ovules, the style filiform, the stigma briefly 2- or 3-parted, sometimes capitate. Fruits dry, indehiscent or loculicidally dehiscent, 2- or 3-loculate, each cell 2-seeded, or falsely 6- to 9-loculate, or each cell 1-seeded, or 1-loculate with I seed due to abortion, usually sessile on the slightly accrescent gonophore, lappaceous, the spines elongating from the pericarp at the bases of the spinules; seeds compressed-ovoid or pyriform, with a more or less prominent funicular groove, the cotyledons folded, the endosperm oily.A
Discusión taxonómica
Grupo pantropical de unas 100 especies. Para México se han registrado alrededor de 30.B
Bibliografía
A. Lay, K. K. 1950: The American species of Triumfetta L. – Ann. Missouri Bot. Gard. 37(3): 315–395. https://doi.org/10.2307/2394513