| Quercus benthamii | |
| Author | A.DC 1864 Prodr. 16(2): 29 1864 |
| Synonyms | baruensis
C.H Muller 1958 gemmata Trel. 1924 Diagnosis here lowilliamsii C.H.Mull. 1950 Diagnosis here rapurahuensis Pittier ex Trel. 1924 (A. Camus : 352) Diagnosis here rapurahuensis Pittier ex Seem. 1904 nom. invalid. (nom. nudum) seemannii subsp. or var. rapurahuensis (Pittier ex Trel.)A.E. Murray 1983 undulata Benth. 1841 |
| Local names | |
| Range | Costa-Rica
(2400 m), El Salvador (2500 m), Guatemala (2100 m), Honduras (1800-2800
m), Mexico (Chiapas, Oaxaca, 1500-3000 m), Nicaragua (450-1700 m), Panama
(2100 m); |
| Growth habit | 15-35 m tall; |
| Leaves |
5-13 x 2-4 cm; deciduous; leathery; mostly oboval or elliptic; apex acute to acuminate or attenuate, seldom aristate; base remotely cuneate or narrowly acute, sometimes obtuse; margin entire, flat or weakly revolute, often wavy, seldom with few bristle-tips; dark green, glabrous or glabrescent above, with trichomes on the midrib; stellate hairs at axils and along midrib beneath, without glandular hairs; 10-14 pairs of lateral veins, straight or nearly so, strongly prominent below; epidermis smooth or slightly bulled; hairy petiole 6-20 mm long; |
| Flowers | male inflorescences 5-15 cm, with numerous flowers; female very short, bearing 1-4 pubescent flowers; |
| Fruits | acorn 1.5-2 cm x 1.6-2; singly or paired; subglobose, apically rounded, mucronate, on a 3-6 mm long stalk; nut enclosed 1/3 in cup; inner surface of shell pubescent; cupule hemispheric or turbinate, not rolled at margin, 2-3 cm in diameter, with broadly triangular, pointed, appressed, yellowish coffee-coloured, pubescent scales; ripen the first year; |
|
Bark, twigs and |
bark rough, grey to black; twigs 1.5-3 mm thick, coffee-coloured, rusty pubescent first year, becoming glabrous, with prominent light-coloured lenticels; buds ovate 3-5 mm, with silky scales; |
| Hardiness zone, habitat | a little tender; |
| Miscellaneous | --
A. Camus : n° 322; -- Sub-genus Quercus, Section Lobatae; Series Erythromexicanae, Group Benthamiae; -- For many Authors, Q. rapurahuensis is a true species, having more secondary vein pairs (more than 20, though in the original description of Pittier there are nearly 10 pairs...see here); -- The term "undulata" inspired numerous Authors ! One can list the following : Q.undulata Engelm 1878 (= Q.sinuata Walt.), Q.undulata Kit.1863 (= Q.pubescens Willd.), Q.undulata Benth. 1841 (= Q.benthamii A.DC), Q.undulata K.Koch 1847 (= Q.lusitanica Lam.), Q.undulata Torr 1827 (= Q.x undulata complex Little 1979), Q.undulata Sarg., and A.DC ( describing more or less Q.x pauciloba ...), Q.undulata S. Wats. (= Q.gambelii Nutt.) ; -- The plants from Nicaragua have generally toothed leaves (but they may have been misidentified); -- Close to Q.humboldtii Bonpl. -- Hybridizes with Q.salicifolia; |
| Subspecies and varieties |
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| Pictures |
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