Triumfetta brachistacantha Standl.
Descripción
Older branches glabrate, longitudinally ridged, with many prominent white lenticels, the younger stems and inflorescence axes terete, lightly stellate-pubescent. Leaves broadly ovate, small, 1.5-2.0 cm. long and about 1.0 cm. wide, obtuse to subcordate at the base, gradually and narrowly acuminate, rather regularly and doubly serrate, the upper surface lightly stellate-pubescent, the lower more densely so; petioles short, usually not longer than 1 cm., lightly stellate-pubescent. Inflorescences axillary, the cymes of 1 or 2 cymules, rather lax, the flowering peduncles about 3 mm. long, the pedicels 3-4 mm. long. Flowers hermaphrodite, the buds broadly oblongoid, 5-7 mm. long slightly before anthesis, the apical appendages short, about 1 mm. long or less; sepals lanceolate, 7-8 mm. long including the apical appendages, lightly stellate-pubescent without; petals broadly obovate, 5-6 mm. long and 2-3 mm. wide, the claw 2-3 mm. long, densely plumose; gonophore very short, less than 0.5 mm. long, the glands oblong, small; urceolus rather short, about 0.25 mm. high, distinctly 5-lobed, briefly ciliate; stamens 15, the filaments glabrous, smooth; ovary orbicular, about 1 mm. long, the spinules numerous, re- curved, the style 4-5 mm. long, the stigma acute. Fruits orbicular, small, loosely borne in small nodose clusters, the body 2-3 mm. in diameter at maturity, lightly stellate-pubescent, 3-loculate, each cell 1-seeded, the spines about 75-100, about 1 mm. long, glabrous; seeds ovoid, 1.5-2.0 mm. long and 1.0-1.5 mm. wide.A
Distribución
México (país) EndémicoA
Tipo de vegetación
No especificadoA
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
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