Oaks of the World

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 Quercus salicifolia
AuthorNée 1801
Synonymsacapulcensis Trel. 1924
boquetensis Standl. 1940
borucasana Trel. 1924    (A. Camus : n 323)
chiriquensis Trel. ex C.H.Muller 1942
citrifolia Liebm. 1854
duratifolia C.H.Muller 1942    (A. Camus : n 330)
eugeniifolia Liebm. 1854    (A. Camus : n 331)
eugeniifolia f. petioleata Trel. 1924
flagellifera Trel. 1924
granulata Liebm. 1854, nom. illeg. not Raf. 1838
mulleri Martinez
panamandinea C.H.Muller 1942
petioleata (Trel.) E.Murray 1983, nom. illeg.
pittieri Wesm. ex Seem. 1904, nom. nudum
salicifolia var. seemannii (Liebm.) Wenz. 1884
seemannii Liebm.
1854     (A. Camus : 352)
tahuasalana Trel. 1924
Local namesencino 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; 800-2500 m;
Growth habit 10-25 m tall; may reach 35 m with trunk to 1.2 m in diameter; cylindrical trunk; dense rounded crown;
Leaves 7-15 x 2-4 cm; deciduous; leathery; elliptic-lanceolate; apex acute, acuminate, aristate; base narrowly rounded; margin thick, revolute, wavy, entire; adaxially dark, shiny green, hairless; pale green beneath, slightly glaucous, hairless or some glandular trichomes; 12 vein pairs, not really parallel, at an angle more than 45° with the midrib, 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 acorn1-1.6 cm; 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
buds

bark rough, yellow grey to blackish, with vertical ridges and horizontal furrows; twigs slender, 1-2.5 mm thick, glabrescent, dark pinkish brown; 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 405;
-- Section Lobatae; sub-section Eugeniaefoliae;
-- Close to Q. pinnativenulosa, which differs from Q. salicifolia in having leaves longly acuminate at apex, with a bristle-tip often in a spiral.
-- Hybridizes with Q.benthamii, Q.cortesii and Q.sapotifolia;
-- Q.mulleri could be a variant with leaves having 25-30 vein pairs at an angle of 60° with the midrib; Mexico (Oaxaca);
-- For some Authors (Susana Valencia-Avalos), Q.eugeniifolia is a true species, but differing from Q. salicifolia only by the pubescence of the lower side of the leaf (in eugeniifolia leaves are glabrous abaxially or have some stellate trichomes near the base); Mexico (Hidalgo, Puebla, Veracruz) à 1400-1900 m ; Costa-Rica and Panama; for some other Authors, it is a variety of Q. affinis.
-- For Govaerts & Frodin (1998) and for the Biological Institute of the National University of Mexico (2003), the following species are true ones : Q.mulleri, Q. seemannii [= salicifolia var. seemannii (Liebm.) Wenz. 1884, = boquetensis Standl. 1940, = citrifolia Liebm. 1854].
-- 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 Govaerts & Frodin 1998, and for Susana Valencia Avalos 2004, Q.duratifolia is a true species, but not for Linares, J.L., (El Salvador) in 2006.
Subspecies and
varieties
-- Q.tonduzii Seemen 1904
= Q.seemannii var. tonduzii (Seem.) E.Murray 1983
differs from Q. seemannii in lacking pubescence at base of blade adaxially; Burger, in 1977, regards Q.seemannii as a complex, because of its great variability, integrating probably Q. gulielmi-treleasei and Q. tonduzii.
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