| Quercus hirtifolia | |
| Author | M.L.Vasquez-Villagran, S. Valencia-A. & K.C.Nixon 2004 Brittonia 56(2): 137 |
| Synonyms | |
| Local names | |
| Range |
Mexico : Southern part of the Sierra Madre Oriental (Hidalgo, Puebla,
Veracruz), 1600 to 2400 m |
| Growth habit | Tree
to 4-15 m, or shrub |
| Leaves |
2,8-12 x 1,6-7 cm; coriaceous or subcoriaceous; oboval to elliptic, rarely ovate; 1.5-2 times longer than wide ; apex aristate, pointed or apiculate, occasionally rounded; base cordate, sometimes rounded to oblique; margin sinuate, with 2-4 pairs of aristate teeth near apex and sometimes above base, seldom only aristate (without teeth); young leaves with some stellate trichomes adaxially; mature leaves slightly pubescent above, with some stellate trichomes along midvein; persistent pubescence underneath with scattered fascicled hairs (the 8-12 rays spreading away from the axis of the trichoma); the indumentum persistent or falling into plates by aging; abaxial epidermis usually smooth, somtimes papillose; 6-12 pairs of secondary veins, raised under; petiole 2.5-8 cm long, at first densely pubescent, becoming glabrescent with sessile non glandular stellate hairs; |
| Flowers | in April-May; male catkins 2-8 mm long, with pubescent rachis; female flowers 1-3 together, with densely pubescent cupular scales, styles 1 mm long, and broadly spatulate stigmas; |
| Fruits | acorn 0.7-1.9 cm long x 0.4-1.3 cm in diameter, on the tip of a thin, pubescent peduncle to 2.5 cm long; cup halfround with ovate, slightly pubescent scales, ciliate at margin; ripening first year from September to October; |
|
Bark, twigs and |
young
twig 1.5-3.5 mm thick, pubescent, becoming glabrescent second year; |
| Hardiness zone, habitat | hardiness zone : 8; |
| Miscellaneous | --
Sub-genus Quercus, section Lobatae, Series Erythromexicanae; -- Closely related to Q.hintoniorum; -- Threatened (IUCN Red List Category : EN).
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| Subspecies and varieties |
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| Pictures |
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