Bui. 299, U. S. Dept. of Agriculture. 



Plate II 



■.'i;b; 



■-.^■?c 





ASH Seed, Natural Size. 



i I of the while ash group: No. l, /". texensis; Nos. 2, I. and 8, F. biltmoreana; Nos. 



3, 5, 6, and 7, F. amerieana. Nos. 9-10. seed of the green nsh group: No. 12. Britton's 

 Michauxii; No. 13, Britton's /■'. darlingtonii; the remainder show variations in size and 

 shape of seed of /•'. huifi i,i<ita and /•'. /.fiiim/lvanica. Nos. it 18, seed of the water ash group: 

 No. 17. /■', pauciflora; No. 18, /•'. carofimiana. Nos. 19-22, seed of the black ash group: Nos. 

 19-20, profile and face view of s /■'. quadrangidata seed, showing characteristic twist; Nos. 

 21-22, profile and face view of a F. nigra seed, which is characteristically flatter than F. 

 quadrangiUata, 



