| Quercus engleriana | |
| Author | Seemen 1897 Bot. Jahrb. Syst. 23(57): 47 |
| Synonyms | dolichostyla
A.Camus 1934 kongshanensis Y.C.Hsu & H.Wei Jen 1976 Acta Phytotax. Sin. 14(2): 85 lanceolata Qu & Zhang 1984, nom. illeg. lyoniifolia Cheng 1950 obscura Seemen 1897 not Trel. shangxiensisZ.K. Zhou 1998 Acta Bot. Yunnan. 20: 44 sutchuenensis Franch. 1899 |
| Local names | ba
dong li ; |
| Range | China (Szechwan,
Hupeh, Shaanxi), Tibet, Assam ; 700 to 2700 m ; introduced in Europe in
1900 by Wilson ; |
| Growth habit | 6-8 m, but may reach 15 m; |
| Leaves | 6-16 x 2.5-5.5
cm; evergreen (old leaves fall as the new ones unfold); thick, very stiff;
narrowly oval oblong; pointed and acuminate at apex; base rounded or cordate
or sometimes somewhat cuneate; margin toothed in the apical half, or sometimes
entire; dark shining green, hairless above ; at first yellowish-brown
pubescent beneath, becoming glabrous, except fascicled hairs sometimes
remaining at vein axil; 10-13 vein pairs strongly raised beneath; petiole
1-2 cm, tomentose becoming glabrous; |
| Flowers | May-June; female inflorescences 1-5 cm at leaf axil, terminal on young shoots, bearing 1 to 10 cups; |
| Fruits | acorn ovoid
1-2 cm long, acute, mucronate, glabrous; single or to 10 together; cup
shallow enclosing 1/3 of nut, sessile, 0.8-1 cm in diameter; scales oval-lanceolate
1 mm long, brown tomentose near base, glabrous and reddish at apex; maturing
in 1 year; |
|
Bark, twigs and |
bark
dark brown, thin; young twigs yellow grey tomentose, becoming glabrous;
oblong, brownish lenticels; |
| Hardiness zone, habitat | probably
hardy; all types of soils; |
| Miscellaneous |
-- Sub-genus Cerris, Section Ilex; |
| Subspecies and varieties |
--
Q.marlipoensis Hu & Cheng 1951 (Acta Phytotax. Sin.
1: 142) is very close to Q.engleriana in its southern range (SE Yunnan, at 1100 m), with larger leaves (15-22 x 6-11 cm) sometimes oboval and with 16-20 vein pairs. Threatened (IUCN Red List Category : CR) |
| Pictures |
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