General data | Classifications | List of species | Local names | Back
to home page |
Quercus calophylla | |
Author | Schltdl. & Cham. 1830 Linnaea 5: 79 1830. |
Synonyms | acuminata Martens
& Galeotti 1843, not Sarg. alamo Benth. 1840 candicans Née 1801 Anales Ci. Nat. 3: 277 1801. candicans f. michoacana Trel. 1924 chimaltenangana f. gemmata C.H.Muller 1937 flavida Liebm. 1854 Diagnosis here intermedia Martens & Galeotti 1843 umbrosa Endl. 1848 |
Local names | encino aguacatillo;
encino de asta; ahuamextli; |
Range | Mexico (Michoacan, Jalisco, Guerrero, Durango, Querretaro, Hidalgo, Mexico, Morelos, Nayarit, Puebla, and others); Guatemala ; 1200 - 2700 m |
Growth habit | 8-25
m ; trunk 20-80 cm to 1 m diam.; |
Leaves | 10-20 x 5-12 cm; oboval or
elliptic; thick, leathery; apex aristate, pointed; base subcordate to
truncate; margin flat, cartilaginous, toothed apically (5-8 teeth pairs
in the distal 1/2 or 1/4), sometimes entire (but always with aristae);
lustrous green, slightly rough, almost glabrous above (sometimes with
stellate hairs near base and along the midvein); whitish tomentose beneath
(yellow when dry), tomentum made of sessile, stellate, appressed hairs
and simple glandular ones; 8-15 pairs of straight secondary veins, prominent
beneath; petiole 1.3-2 cm, hairy; |
Flowers | staminate catkins 5-6 cm long, villous, 20-flowered; pistillate ones 2-5 flowered, 1.5-3 cm long; |
Fruits | acorn 1.5-2 cm long, 1.5 cm wide; ovoid, light brown, becoming glabrous; solitary or paired, on a 0.5-15 mm long stalk; enclosed 1/3 by the cup; cup hemispherical, 1.5-2 cm wide, with narrow glabrous scales; maturing in 1 or 2 years; |
Bark, twigs and |
bark grey, furrowred; twigs 2-3 mm diam., with yellow pubescence first, becoming glabrous and dark red, with inconspicuous lenticels; buds pointed, broadly ovoid, 3-6 mm; stipules 1-1.5 cm long, soon deciduous; |
Hardiness zone, habitat | a little
tender (zone 8); prefers calcareous soils; |
Miscellaneous | -- A. Camus : n°
402; -- Sub-genus Quercus, section Lobatae; -- In 2017, S. Valencia & al. has demonstrated that the type-specimen of this taxon (in the herbarium of Madrid, Spain), does not fit with the description; hence the name of Q. candicans is no more valid, and the Author thinks that the valid name Q. calophylla Schltdl. & Cham. 1830 must be used from now on. |
Subspecies and varieties | |
Pictures |
|