Triumfetta calderonii Standl.

Primary tabs

Triumfetta calderonii Standl.

Descripción

Small trees or large shrubs 6-8 m. high; branches and inflorescence axes covered densely with both fine stellate and long spreading coarse stiff hairs. Leaves broadly ovate to obscurely 3-lobed, 10-15 cm. long and 7-11 cm. wide, the base rounded or subcordate, the tip gradually and narrowly long-acuminate, the serrations coarse and irregular, blunt and usually glandular, the upper surface dark green, lightly but coarsely pubescent with many short suppressed stellate hairs, the lower pallid, densely pubescent with long spreading stellate and simple hairs; petioles 5-7 cm. long, densely pubescent; bracts elliptical. Inflorescences terminal, large and spreading, with many small, caducous bracts, the cymes of 4-6 cymules, rather lax in flower though generally crowded in fruit, the flowering peduncles about 3-4 mm. long, the pedicels 3-5 mm. long. Flowers hermaphrodite, the buds broadly obovoid, constricted towards the base, about 5 mm. long at anthesis, the apical appendages very small to nearly obsolete; sepals elliptical, 5-7 mm. long, whitish and densely tomentose without, yellow-brown and glabrescent within; petals obovate, small, about 2 mm. long, the claw very short, lightly plumose; gonophore short and stout, about 0.5 mm. long and 1.5 mm. wide, the glands very small, spherical; urceolus about 0.25 mm. high, many-lobed, lightly ciliate; stamens 40, the filaments glabrous; ovary ovoid, about 1 mm. long, the spinules about 50, erect, the style 2-3 mm. long, the stigma acute. Fruit spheroid, the body 2-3 mm. in diameter at maturity, rather densely tomentose, 2-loculate, each cell 1-seeded, the spines about 50, 4-5 mm. long, densely plumose with relatively long stiff white hairs; seeds pyriform, about 1.0 mm long. and wide.A

Forma de crecimiento

Árbol/arborescente

Forma de vida

Terrestre

Nutrición

Autotrófica

Distribución

México (país) Nativo y no endémicoB

Elevación

450 – 1000 mA

Tipo de vegetación

No especificadoA

Categoría IUCN

Preocupación menor (LC)C,1
1. como Triumfetta arborescens (Seem.) Sprague

Categoría NOM-059-SEMARNAT-2010

No incluidaD

Estatus del taxón

(A) Como definida actualmente, probablemente una entidad natural (monofilética)

Bibliografía

A. Standl. & Steyerm. 1949: Flora of Guatemala Fieldiana: Botany, 24, VI
B. Gual, M. 2008: Tiliáceas (Dicotiledóneas). En: S. Ocegueda y J. Llorente-Bousquets (coords.). Catálogo taxonómico de especies de México. Capital natural de México, Conocimiento actual de la biodiversidad vol. I: CD1
C. IUCN 2022: The IUCN Red List of Threatened Species. Versión 2022-2
D. SEMARNAT 2019: MODIFICACIÓN del Anexo Normativo III, Lista de especies en riesgo de la Norma Oficial Mexicana NOM-059-SEMARNAT-2010: 101 pp. – https://www.dof.gob.mx/nota_detalle.php?codigo=5578808&fecha=14/11/2019#gsc.tab=0 [accessed 2023-05-04 06:16]