Oaks of the World

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  Quercus salicifolia
Author Née 1801 Anales Ci. Nat. 3: 265
Synonyms acapulcensis Trel. 1924 diagnose ICI
chiriquensis Trel. ex C.H.Muller 1942
duratifolia C.H.Muller 1942 (A.Camus : n° 330)
mexicana var. glabrata Liebm. ex Seem. 1856
mulleri Martinez 1953 Anales Inst. Biol. Univ. Nac. México 24: 51 1953.
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 12-25 m, and more; trunc cylindrical to 60 cm in diameter; dense rounded crown;
Leaves 7-15 x 2-4 cm; 3.6 to 4.5 times as long as wide; deciduous; coriaceous; lanceolate; apex pointed, acuminate, aristate; base narrowly rounded; margin thick but not revolute, entire; adaxially smooth, dark glaucous green, shiny, hairless; abaxially paler, slightly glaucous, smooth, hairless except some fasciate hairs at axils; 15-25 veins pairs, not quite parallel, at an angle of 45° with midrib, slightly raised beneath; epidermis smooth, papillose, not bullate; petiole 3.4-4 mm long, pinkish, glabrescent;
Flowers from December to January; male catkins 4-6 cm long, few flowered; female flowers 1-4 on a 0.2-0.8 cm long rachis;
Fruits acorn 1-1.6 cm long, 0.8-1.2 cm wide, cylindric-ellipsoid, mucronate, pubescent, shiny brown; solitary or paired on a 1 cm long peduncle; pericarp pubescent inside; cup halfround or less deep, 1.5-2 cm in diameter, with pointed scales, enclosing 1/4 or 1/3 of nut; maturing same year;

Bark, twigs and

bark smooth or slightly rough, yellowish grey to nearly black, with vertical ridges and horizontal fissures; twigs slender, 1-2.5 mm thick, dark pinkish brown, glabrescent; conspicuous light, 0.5-1 mm long lenticels; bud ovoid, pointed, 1.5-5 mm long, dark reddish brown, with silky scales sometimes ciliate; deciduous stipules 5 mm long;
Hardiness zone, habitat hardy zone 8; slow growing; wet forests in mountains;

-- A. Camus n° 405;
-- Sub-Genus Quercus, Section Lobatae, Series Erythromexicanae, Group Eugeniaefoliae;
-- Hybrids with Q. benthamii, Q. cortesii and Q. sapotifolia;

-- Resembles Q. pinnativenulosa, but this one has a long acuminate with a bristle-tipped apex often curly, acorns maturing in 2 years, hairless leaves without any shade of glaucous, a cuneate base, a longer petiole;

-- Q. mulleri, true species for the Plant List 2013, could be a variant with 25-30 veins pairs at an angle of 60° with midrib; in Mexico (Oaxaca); IUCN Red List category CR);

-- For Susana Valencia 2004, Q. duratifolia is a true species, but not for J.L. Linares 2006 (El Salvador), neither for The Plant List 2013.



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