Triumfetta barbosa Lay
Descripción
Frutex circiter 2-4 m. altus. Ramuli graciles longitudinaliter sulcati 4-angulati glabrescentes. Folia late ovata non-lobata 14-16 cm. longa 7-10 cm. lata base cuneata vel rotundata apice longe attenuata subdupliciter serrata pilis sparse stellatis mox glabrescentia infra breviter stellato-pubescentia, in axillis nervorum dense longi-pubescentia. Inflorescentiae axillares, cymis cymulis 2, pedunculis circiter 4 mm. longis, pedicellis 8-10 mm. longis. Flores hermaphroditi, alabastro maturo oblongoideo 18-20 mm. longo; sepalis ellipticis 20-22 mm. longis extra breviter pubescentibus, appendiculis circiter 2 mm. longis glabris; petalis ellipticis vel obovatis 14-16 mm. longis, unguilo 2-3 mm. longo dense plumoso; gonophoro circiter 1.5 mm. longo, glandulis ellipticis 0.75-1.0 mm. longis; urceolo circiter 0.75 mm. alto, 5-lobato breviter ciliato; staminibus 20, filamentis usque ad 12-14 mm. longis glabris; ovario globoso circiter 1.5 mm. longo, spinulis 75-100 re- curvatis, stylo glabro 15-16 mm. longo, stigmate acuto. Fructus globosus non dehiscens, corpore ipso 4-6 mm. diametro, breviter stellato-pubescens 3-locularis, loculis 1-spermis, aculeis circiter 75, 3-4 mm. longis breviter pubescentibus; seminibus ovoideo-acutis circiter 2 mm. longis et latis.A
Distribución
México (país) EndémicoA
Elevación
2500 mA
Tipo de vegetación
No especificadoA
Categoría IUCN
En peligro (EN)B
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
A species rather closely allied to T. chihahnuensis, but may be distinguished by its undivided long-attenuate leaves with dense tufts of hairs in the axils of the veins on the lower surface, and also by its more densely pubescent spines and glabrous filaments.
A
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