Oaks of the World

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  Quercus seemannii
Author Liebmann 1854 Overs. Kongel. Danske Vidensk. Selsk. Forh. Medlemmers Arbeider 1854: 188

Diagnosis here
Synonyms boquetensis Standl. 1940
borucasana Trel. 1924 (A. Camus n° 323) Diagnosis here
citrifolia Liebm. 1854 Diagnosis here
eugeniifolia Liebm. 1854 Diagnosis here
eugeniifolia f. petiolata Trel. 1924
flagellifera Trel. 1924 Diagnosis here
granulata Liebm. 1854, nom. illeg. not Raf. 1838 Diagnosis here
petiolata (Trel.) A.E. Murray 1983 nom. illeg.
pittieri Wesm. ex Seem. 1904, nom. illeg. nudum
salicifolia var. seemannii Wenz. 1884
Local names
Range Costa Rica; Panama; Mexico (Hidalgo, Puebla, Veracruz); 1400-2400 m;
Growth habit reaches 30 m tall;
Leaves 6-10 (-15) cm x 1.5-3.5 cm; 5 to 6 times longer than wide; leathery; lanceolate to narrowly elliptical; apex acuminate, aristate; base cuneate or attenuate, seldo rounded; margin revolute, minutely crispate, entire; adaxially glossy, green without any shade of blue-green, hairles except sometimes a very scattered stellate pubescence at base of midrib; abaxially hairless except sometimes some stellate trichomes at base; 12-15 vein pairs, smooth or remotely raised above, prominent beneath, at an angle of 70-80° with the midrib, and connected each other before reaching the margin; petiole 2-6 mm long, glabrescent.
Flowers male catkins 4 cm long, with lax flowers;
Fruits acorn subglobose, 1.1 cm long x 0.9 cm wide, solitary on a glabrous, 3-8 mm long peduncle; enclosed 1/4 by cup; cup 5 mm high, 7-11 mm wide, with broadly ovate scales; maturing in 1 year;

Bark, twigs and
buds

twig 1.5-2.5 mm thick, more or less tomentose, glabrescent, with inconspicuous lenticels; bud 3-4 mm long, elongated, pointed, brown, hairless; stipules soon deciduous.
Hardiness zone, habitat
Miscellaneous -- A. Camus n° 362;
-- Sub-genus Quercus, section Lobatae, Series Erythromexicanae, Group Eugeniifoliae;

Subspecies and
varieties
-- Q. tonduzii Seemen 1904 Bull. Herb. Boissier II, 4: 656 (A. Camus n° 324) Diagnosis here
= Q. seemannii var. or subsp. tonduzii (Seem.) A.E. Murray 1983
differs from Q. seemannii in having a floccose pubescence both sides of the young leaf, especially abaxially, soon deciduous; also the leaves are shorter (10 cm long maximum), the margin is wavy, and the angle between lateral veins and midrib is less open; unique range in Costa Rica, on the slopes of the Poas volcano; this taxon is very close to Q. seemannii (identical ??); Burger (1977) considers Q. seemannii as a complex, regarding its great variability, which includes probably Q. tonduzii and Q.gulielmitreleasei.


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