Oaks of the World

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  Quercus paxtalensis
Author C.H.Muller 1942 Misc. Publ. U.S. Dept. Agric. 477: 75
Synonyms  
Local names  
Range Mexico (Chiapas, Hidalgo, Oaxaca, Tamaulipas, Veracruz); 1000-1500 m
Growth habit 7-20 m tall ;
Leaves

8-16 x 2.8-4 cm; subcoriaceous; ovate or lanceolate, often assymetrical; apex acute bristle-tipped; base rounded or truncate; margin flat, with 7-11 pairs of aristate teeth; adaxially lustrous, hairless; abaxially less lustrous, glabrous or seldom with stipitate, fascicled trichomes at veins axils; 7-11 veins pairs, straight, ending in the teeth, weakly raised or not at all above, prominent beneath; petiole 1.7-6 cm;

Flowers  
Fruits acorn 1.2-1.7 cm long, 1-1.2 wide, ovoid-cylindrical; solitary; on a 4-5 mm long peduncle; cupule turbinate 9-11 mm in diameter, 12-15 mm high, with greyish pubescent scales; enclosed at 1/3 in the cup; maturing in 1 year in September-October.

Bark, twigs and
buds

twig 1-5 mm thick, glabrous, with conspicuous yellowish lenticels; bud conical or ovoid 1;2-4 mm long, greyish;
Hardiness zone, habitat  
Miscellaneous -- A. Camus : n° 399;
-- Sub-genus Quercus, section Lobatae, sub-section Acutifoliae;
--
For some Mexican Authors (Silvia Romero Rangel, 2006), as well for Govaerts 2013, this species is a synonym of Q.xalapensis. But for S. Valencia 2016 it is a true species which differs from Q. xalapensis which has acorns maturing in 2 years, a tawny cupule more tomentose, and foliar base rounded or obtuse ;
Subspecies and
varieties
 
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