BRI'l'liSK OAK (Qiierrut: robur, rai: pedunculala) 



A. Flowering branch, with male and female flowers. B. Kruil. C. Single male flower. I). Suijjle female flower, longitudinal 

 section. £. Cups or cupules of acorn. F. Half-grown acorns. G. Longitudinal section of mature acorn. 



//. Transverse section of young acorn. 



Tlate LIX. 



