23 



Fig. II 



A. Mountain Ash, or D. Chinese Wing Nut, G. Black Walnut, J. nigra 



Rowan, Sorbus Aucu- Pterocarya stenoptera 



paria E. Leaflets and fruit of H. Chinese Pistachia, Pis- 



B. Service Tree, S. domes- Caucasian Wing Nut, tacia chinensis 



tica P. caucasica 



C. Mocker Nut (a hickory), F. Common Walnut, Jug- J. Soapberry, Sapindus 



Carya alba lam regia Drummondii 



