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Quercus peduncularis | |
Author |
Née 1801 Anales Ci. Nat. 3: 270 Diagnosis here |
Synonyms |
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Local names | encino
zopilote negro; |
Range |
Mexico (Chiapas, Colima, Guerrero, Jalisco, Mexico, Michoacan, Oaxaca,
Puebla, Veracruz); 900 - 2600 m; |
Growth habit | 2
to 4 m tall; trunk to 30 cm in diameter; widespreading; |
Leaves | 5-10
x 2-5 cm; deciduous; thick, leathery; elliptic, oblanceolate or obovate;
apex obtuse or acute; base obtuse to subcordate; margin thickened, revolute,
cartilaginous, sinuate-dentate in the distal half (7-10 mucronate teeth
on each side); dark green, shiny, hairless above except stellaire hairs
near base, with impressed veins; whitish, woolly beneath with stellate,
stalked, tangled long hairs, with prominent veins; 9-14 rather straight
vein pairs; epidermis glaucous, papillose; petiole slender, 3-5 mm long,
somewhat pubescent, dark reddish brown; |
Flowers |
from March to May; staminate catkins 5-9 cm long, with numerous flowers; pistillate flowers 2-5, clustered at the tip of a yellow hairy peduncle; |
Fruits | acorn
1 cm long, 1.2 cm in diameter; light brown; mucronate; singly or more
often 2 to 5 on a 3-4 cm long peduncle; enclosed 1/3 to 2/3 by cup; cup
scaly 1.2-1.3 cm in diameter; maturing in 1 year from July to September;
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Bark, twigs and buds |
bark
grey furrowed; twigs 2-2.5 mm wide, smooth, tawny, at first with dense
stellate tomentum, becoming glabrous the second year, with pale yellow
lenticels; bud pointed 2-4 mm; |
Hardiness zone, habitat | hardy;
all types of soils; prefers dry sites; |
Miscellaneous | --
A. Camus : n° 224; -- Sub-genus Quercus, Section Quercus, Subsection Leucomexicanae, Group Reticulatae; -- For Tracey Parker (Trees of Guatemala, 2008), Q. pilicaulis is a true species. |
Subspecies and varieties |
For A. Camus, there are
several subspecies: 1- subsp callosa
(Benth) A.Camus 1939 2- subsp pilicaulis
(Trel.) A.Camus 1935 3- subsp hurteri (Trel.) A.Camus 1935 |
Pictures |
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