Oaks of the World

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  Quercus ciliaris
Author C.C. Huang & Y.T. Chang 1992 Guihaia 12: 302 1992
Synonyms glauca f. gracilis Rehd. & Wils. 1916
gracilis (Rehd. & Wils.) Wuzhi 1976 not Korthals 1844 nec Lange 1865
liboensis Zhou 1998
shennongii Huang & Fu 1984
Cyclobalanopsis gracilis (Rehd. & Wils.) W.C. Cheng & T. Hong in W.C. Cheng 1963
Cyclobalanopsis glauca (Thunb.) Oerst. var. gracilis Y.T. Chang 1994
Cyclobalanopsis pseudoglauca Li & Wang 1985
Cyclobalanopsis shennongii (Huang & Fu) Y.C.Hsu & H.Wei Jen 1993 Wuhan Bot. Res. 2: 242
Local names xi ye qing gang;
Range 500-2600 m in China (Anhui, Fujian, Gansu, Guangdong, Guangxi, Guizhou, W Hubei, Hunan, Jiangsu, Jiangxi, Shaanxi, Sichuan, Zhejiang).
Growth habit reaches 15 m tall;
Leaves 4.5- x 1.5-3 cm, oblong-oval to oval-lanceolate; shiny green adaxially; whitish below, with simple prostrate hairs; base cuneate to almos rounded; apex acuminate to caudate; margin with small sharp serrations on apical 2/3; 7-12 vein pairs inconspicuous; tertiary veins obscure beneath; petiole 1-1.5 cm long;
Flowers pistillate inflorescences 1-1.5 cm long, with tomentos bracts and rachis;
Fruits acorn ellipsoid, 1.5-2 cm long, 1 cm wide, hairy at apex; 2 to 3 together; enclosed 1/3 or 1/2 by cup; cup 6-8 mm long, 10-13 mm wide, with greyish brown tomentum inside and outside, with 6-9 concentric rings denticulate (the 2 rings near base dentate); scar 5 mm in diameter, slightly convex; stylopodium persistent, short; ripening first year;

Bark, twigs and

branchlets tomentose, glabrescent;
Hardiness zone, habitat hardy; mixed forests in mountains;

-- Sub-genus Cerris, section Cyclobalanopsis;
-- Closely related to Q.glauca, actually conspecific with it;
-- In Flora of China this species is described under the name Cyclobalanopsis gracilis;
-- In 2007, Govaerts accepts that Q. liboensis is a true species (Guizhou), with the synonym Cyclobalanopsis pseudoglauca Li & Wang 1985 ; threatened (IUCN Red List Category : EN)


Subspecies and