212 



WALNUT 



diaphragms with hollow'chambers between, at once evident 

 on cutting (Fig. 108). The twigs are not flattened at the 

 apex. 



The stout glabrous cylindrical twigs are greenish to 

 ash-grey and have resem- 

 blances to those of the Ash 

 e.g. the prominent leaf- 

 bases and black lateral buds ; 

 but the terminal or pseudo- 

 terminal bud is grey tomen- 

 tose and the laterals glab- 

 rous, the leaf-scars broadly 

 Y-shaped, or angular heart- 

 shaped, and very different, 

 and not opposite. The lat- 

 eral buds are often extra- 

 axillary or accompanied by 

 superposed accessory buds: 

 two opposite bud -scales 

 almost entirely conceal the 

 rest, which are in three 

 ranks. 



The terminal and flower- 

 ing buds may expose more 

 than 3 scales, and be dark or 

 nearly black in colour, some- 

 what shining, though micro- 

 scopically hairy. Branches 

 olive-grey to brownish, with 

 evident lenticels. 



The bud-scales are leaf- 

 bases (Figs. 48 c and 49 d). 



The young bud has a closed v . 1AQ ^ . 



Fig. 108. Walnut, Juglans 



enveloping scale with a regia, p. 211 (D). 



