Bui. 299, U. S. Dept. of Agriculture. 
Plate III 
12 
13 h 14 ! 
21 1 
A 
Ash Seed, Natural Size. 
Nos. 2, 4, and 8, jF. biltmoreana; Nos. 
e green ash group: No. 12, Britton's 
Nos. 1-8, seed of the white ash group: No. 1, F. texensis 
3, 5, 6, and 7, F. americana. Nos. 9-16. seed of tht 
Mn-hnaxa; No. 13, Britton's F. darlinqtonii; the remainder show variations in size and 
shape of seed of F. lanceolata and F. pennsylvanica. Nos. 17-18, seed of the water ash group: 
nnon '' pauciflora; No. 18, F. camliniana. Nos. 19-22, seed of the black ash group: Nos. 
19-20, profile and face view of a F. quadranc/alata seed, showinar characteristic twist: Nos. 
21-22, profile and face view of a F. nigra seed, which is characteristicallv flatter than F. 
quadrangulata. 
