Oaks of the World

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  Quercus furfuracea

Liebm. 1854 Overs. Kongel. Danske Vidensk. Selsk. Forh. Medlemmers Arbeider 1854: 189

Diagnosis here

Synonyms acutifolia var. furfuracea (Liebm.) Oerst. 1869
Local names
Range Mexico, Sierra Madre Oriental (Puebla, Hidalgo, San Luis Potosi) ; 1300-2600 m;
Growth habit  8-15 m tall;
Leaves 4-12 cm x 2.5-5; deciduous; thick, stiff, coriaceous; elliptic to ovate or lanceolate; apex pointed, bristle-tipped; base rounded, cuneate or truncate; margin not or very slightly revolute, mostly flat, often slightly crispate, with 3-10 pairs of aristate teeth (teeth 4 mm long) in the 2/3 or 3/4 of the blade; shiny olive green above, with long stellate multiradial hairs along midrib, and short ones on the limb; at first densely greyish floccose pubescent beneath, then the stellate trichomes detach from the blade, into kinds of squames, leaving axil tufts; 6-9 vein pairs, parallel, flat adaxially, prominent beneath; epidermis papillose or smooth; petiole 1-2.5 cm long, yellowish, densely floccose, glabrescent;
Flowers pistillate catkins 1-2 cm long, with 1 to several flowers;
Fruits acorn ovoid 1 cm long, singly or paired on a 1-2 cm long peduncle; cup half-round with pubescent scales enclosing 1/2 the nut; maturing in 1 year in September; 

Bark, twigs and

twig 1-3 mm in diameter, reddish-brown, with dense yellowish floccose pubescence lasting several seasons, and with inconspicuous lenticels; bud ovoid 2.5-4 mm long, reddish, lustrous, obtuse, with pubescent scales;  
Hardiness zone, habitat
Miscellaneous -- A. Camus : n° 386;
-- Sub-genus Quercus, section Lobatae, sub-section Acutifoliae;

-- Threatened (IUCN Red List Category : VU).

-- Possible confusion with Q. meavei as both have a fulvous tomentum on twigs and petiols, but meavei has nearly glabrous, wider leaves (to 7 cm), longer teeth (2 to 8 mm), 14-19 veins pairs, and the fruit is biennial;
-- Ressembles Q. sartorii but can be distinguished by its floccose twigs, petiole and veins, while sartorii has twigs, petiole and veins glabrous or glabrescent;

Subspecies and