Species

Quercus germana Schltdl.

LC

Synonyms (1)

germana var. echinata Trel. 1924 germana subsp subsquarrosa A.Camus 1935 substenocarpa Trel. 1924
Data from Oaks of the World

Geographic Range

Mexico (Hidalgo, Oaxaca, Puebla, San Luis Potosi, Tamaulipas, Veracruz); 700-2300 m;

Growth Habit

reaches 20 m tall, but much smaller in cultivation;

Leaves

12-19 x 4-9 cm; persistent or semi-evergreen; often crowded at the end of the twig; coriaceous; oboval, oblanceolate or elliptic; apex mucronate, obtuse or acute sometimes shortly acuminate; base acute or rounded, sometimes cordate, often asymmetrical; margin flat or slightly revolute, entire, undulate, or with 4-10 pairs of shortly mucronate teeth on the apical half; lustrous, dark green, nearly glabrous above; pruinose, waxy, glaucous, nearly glabrous beneath (some hairs on the midvein); 8-15 pairs of straight secondary veins, rather straight, almost flat adaxialy; epidermis papillose and slightly bullate; petiole 0.3-0.6 cm long, glabrous or with some stellate trichomes;

Flowers

in March-April; male catkins 10-13 cm, pubescent, with 30-50 flowers; pistillate inflorescence 1-1.5 cm long, with 1-3 flowers;

Fruits

acorn subglobose to ovoid, 2-4 cm long, 2,2 cm in diameter, rusty tomentose at apex; single or paired on a 12-40 mm long glabrous peduncle situated near the end of new twigs, seldom at leaf axils; 1/4 to 1/2 enclosed by cup; cup half-round, warty, pubescent, 1.5-3.5 cm in diameter; maturing first year in September to November;

Common Names

Mexican royal oak

Additional Information

– A. Camus : n° 196; – Sub-genus Quercus, Section Quercus, Series Leucomexicanae; – For Susana Valencia-Avalos (2004), this species has an other synonym : Q.galeottii Mart. & Gal.,

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