QUERCUS, Linn. Gen. No. 1070. 



Monoiceous trees or shrubs with evcrureen or deciduous, alternate, p< nni-nerved 

 loaves. Floiccrs small or minute, braeteolate; tho males in pendulous or - r< t spikes 

 or panicles; the females in erect, unisexual or androgynous spikes. Male floi r ; p rianth 

 with 4 — 7 segments (usually with G) ; stamens 6 to 12, filaments slender, anther* < 111 

 parallel, dehiscing suturally; pistillode hairy or 0.— r<M«l<>jtower enclosed in an involucre 

 of imbricate scales, the perianth urceolate, the tube adherent to tho ovary, the limb 

 minute-lobed, staminodes small or absent; ovary inferior, after fecundation moro or ]< m 

 completely 3-celled (rarely 4- or 5-celled), tho cells 2-ovulate; styles !-5, idiort. 7.'// 



>c 



glans ovoid, globose or turbinate, 1 -celled, surrounded by 



fo 



involucre which embraces more or less of its lower half, or the whole of it ; the involucral 

 scales hardened into teeth or spines or coalesced into zones. Nut attached to the woody 

 involucre by its base only or adnate by its sides also; its pericarp < rustaceous, rarely 

 coriaceous or osseous. Seeds 1 or 2, with membranous testa ; the cotyledons fleshy, 

 plano-convex, sometimes lobed or ruminate; radicle minute. 



CONSPECTUS OF THE SECTIONS OF THE GENUS. 



Section I. Lepidobafanus.—N&te spikes simple, slender, lax, pendulous; involucres 

 of fruit cup-shaped, the apices of the scales free, imbricate, solitary, sub-sessile, usually 

 in short spikes ; leaves dentate or lobed. 



Section II. Cyclobalanopsis. — ^ale spikes pendulous and otherwise as in L>j'i<fo- 

 balanus. Involucres forming a cupule the bracts of which are united to form concentric 

 laminae or zones with entire, crenate, or denticulate edges; leaves dentate or serrate, 

 never entire. 



Section III Pasania. — Male spikes erect, simple or paniclcd, female flowers in short 

 distinct spikes or at the base of some of the male panicles; involucres solitary or in 

 roups of three, cup-shaped, saucer shaped, or discoid; the bracts imbricate, free, or 



ted by their bases only, the apices always free; leaves entire. 



Section IV. Cyclobalanus. — Male spikes erect; styles and leaves as in Pasania; 

 involucres cupulate, solitary, or in threes; their bracts connate into eDtire or denticulatt 

 lamellae as in Cyclobalanopsis ; leaves entire. 





Ann. Roy. Bot. Gard. Calcutta, Vol. II 



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