Née 1801 Anales Ci. Nat. 3: 265
1924 diagnosis here
chiriquensis Trel. ex C.H.Muller 1942
duratifolia C.H.Muller 1942 (A. Camus : n° 330) diagnosis here
mexicana var. glabrata Liebm. ex Seem. 1856
panamandinea C.H.Muller 1942 Misc. Publ. U.S. Dept. Agric. 477: 26 Diagnosis here
tahuasalana Trel. 1924
|Local names||encino saucillo;|
|Range||Mexico in the Sierra Madre del Sur, Pacific side (Chiapas, Colima, Guerrero, Jalisco, Michoacan, Oaxaca, Puebla, Querretaro), Costa Rica, Guatemala, Honduras, El Salvador, Panama, Nicaragua; 800-2000 m;|
|Growth habit||10-25 m tall with trunk to 0.6 m in diameter; cylindrical trunk; dense rounded crown;|
|Leaves||7-15 x 2-4 cm; 3.6 to 4.5 times longer than wide; deciduous; leathery; elliptic-lanceolate; apex acute, acuminate, aristate; base narrowly rounded; margin thick, not revolute, wavy, entire; adaxially dark, shiny glaucous green, hairless; pale green beneath, slightly glaucous, hairless or with some fascicled trichomes at axils; 15-25 vein pairs, not really parallel, at an angle more than 45° with the midrib, weakly raised beneath; epidermis smooth, not bullate; petiole 1-6 mm, pinkish, glabrescent;|
|Flowers||December to January; male catkins 4-6 cm long, few-flowered; pistillate inflorescences 0.2-0.8 cm long, with 1-4 flowers;|
|Fruits||acorn 1-1.6 cm long x 0.8-1.2 cm wide; cylindric-elliptic; mucronate and pubescent; singly or paired; stalk 0.5-1 cm; pericarp pubescent inside; enclosed 1/4 to 1/3 by cup; cup half-round 1.5-2 cm in diameter, with pointed, shiny, pale brown scales; maturing in 1 year from April to July;|
Bark, twigs and
|bark rough, yellow grey to blackish, with vertical ridges and horizontal furrows; twigs slender, 1-2.5 mm thick, glabrescent, dark pinkish brown; marked pale lenticels, 0.5-1 mm long; buds oval lanceolate, pointed, 1.5-5 mm long, with silky scales; stipules 5 mm long, deciduous;|
|Hardiness zone, habitat||hardy zone 8; slow-growing; wet mountains forests;|
|Miscellaneous||-- A. Camus : n°
-- Sub-genus Quercus, Section Lobatae, Subsection Erythromexicanae, Group Eugeniaefoliae;
-- Close to Q. pinnativenulosa, which differs from Q. salicifolia in having narrower leaves longly acuminate at apex, with a bristle-tip often in a spiral, acorns maturing in 2 years, glabrous leaves without any shade of glaucous, base of leaf cuneate, longer petiole.
-- Hybridizes with Q.benthamii, Q.cortesii and Q.sapotifolia;
-- Q.mulleri (Anales Inst. Biol. Univ. Nac. México 24: 51) is a true species for The Plant List 2013, but it could be a variant with leaves having 25-30 vein pairs at an angle of 60° with the midrib; Mexico (Oaxaca). Threatened (IUCN Red List Category : CR)
-- Q.panamandinea is, for Govaerts & Frodin, a true species; the same Authors seem not to know Q. chiriquensis...(they don't quote this name in their World Checklist of Fagales).
--For Susana Valencia Avalos 2004, Q.duratifolia is a true species, but not for Linares, J.L., (El Salvador) in 2006, nor for The Plant List 2013.