Triumfetta chihuahuensis Standl.
Descripción
Slender spreading shrubs 1-2 m. high; older branches lightly pubescent to nearly glabrate, punctate with prominent white lenticels, the younger stems and inflorescence axes densely pubescent with short stellate and simple hairs. Leaves broadly ovate, generally 3-lobed, 11-14 cm. long and 6-9 cm. wide, distinctly cordate, the middle lobes narrowly and gradually acuminate, the laterals acute to shortly acuminate, both surfaces nearly glabrous, only the primary veins lightly pubescent; petioles slender, 6-7 cm. long, briefly stellate-pubescent. Inflorescences axillary, the cymes of 2-3 cymules, usually opposite the bracts, the flowering peduncles about 5 mm. long, the pedicels 3-5 mm. long. Flowers hermaphrodite, showy, the buds broadly oblongoid, 24-26 mm. long and 3-4 mm. wide slightly before anthesis, the apical appendages about 1 mm. long, glabrescent; sepals oblong, 25-30 mm. long including the apical appendages, scattered stellate-pubescent without, glabrescent within; petals broadly obovate, 20-22 mm. long and 4-5 mm. wide, the claw about 3-5 mm. long, densely but very briefly pubescent; gonophore large, about 2.5 mm. long and 1.5 mm. wide, the glands oblong, about 2 mm. long and 1 mm. wide; urceolus short, distinctly many-lobed, briefly ciliate; stamens 20, the filaments smooth, lightly stellate-pubescent at the base; ovary orbicular, about 2 mm. long, the spinules numerous, recurved, the style about 22 mm. long, the stigma very briefly 3-parted. Fruit orbicular, the body about 6 mm. in diameter at maturity, very lightly stellate-pubescent, 3-loculate, each cell 1-seeded, the gonophore and glands prominent, the spines about 75-100, lightly pubescent with few scattered hairs; seeds ovoid, about 3.5 mm. long and 3.0 mm. wide.A
Distribución
México (país) EndémicoA
Elevación
1000 – 1500 mA
Tipo de vegetación
Bosque de pinoA
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