| Quercus macdougallii | |
| Author | Martinez 1964 Anales Inst. Biol. Univ. Nac. México 34: 147 1963 publ. 1964. |
| Synonyms | |
| Local names | |
| Range | Mexico
(Oaxaca); 2800 to 3000 m; |
| Growth habit | 20-25
m tall; trunk to 1 m in diameter; |
| Leaves | 2-6
x 1-3.5 cm ; deciduous; leathery; oblong elliptic; apex acute or obtuse,
mucronate; base rounded, cordate, sometimes asymmetrical; margin thick,
slightly revolute, cartilaginous, entire or with 1-3 pairs of mucronate
teeth ; shiny, smooth above with some hairs along midrib; abaxially yellowish
green, densely covered with short (hardly visible), adpressed, stellate
hairs, and with long simple hairs along midrib; 6-10 vein pairs, stongly
impressed above, prominent beneath; epidermis smooth, papillose; petiole
sulcate, pinkish, slightly pubescent or smooth, 4 mm long; |
| Flowers | froma May to June; female inflorescences bearing at least 4 flowers; |
| Fruits | acorn
globose, 1.5-1.7 cm in diameter; sessile; 3 to 4 together; coffee-coloured;
smooth, shiny, with a small black ring; cup hemispherical 1.5 cm in diameter,
with oval, glaucous tomentose scales; |
|
Bark, twigs and |
grey
bark; twig sulcate, flattened, 2-2.5 mm thick, covered with stellate hairs;
small buds ovoid, narrow, 1-4 mm long; |
| Hardiness zone, habitat | hardy; |
| Miscellaneous | --
Sub-genus Quercus, Section Quercus, Series Leucomexicanae; -- Poorly known species from Oaxaca (Sierra de Juarez), not widespreading but not protected; -- Threatened (IUCN Red List Category : EN). -- Related to Q. sapotifolia; |
| Subspecies and varieties |
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| Pictures |
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