10. 
HE. 
12. 
lise 
14. 
OLEACEAE. 159 
. Buds blue-black: leaflets sessile: fruit broad, winged 
all around. (European ash). 3. 
Buds brown: leaflets stalked: fruit narrow, winged 
principally at the end. It. 
. Leaves of a single leaflet. F. excelsior monophylla. 
Leaves pinnate. 4. 
. Leaflets deeply cut. F. excelsior asplenifolia. 
Leaflets not deeply cut. 5. 
. Dwarf and shrubby. F. excelsior nana. 
Trees. 6. 
. Weeping. 7. 
Not weeping. 8. 
. Twigs gray. - F, excelsior pendula. 
Twigs yellow. F. excelsior aurea pendula. 
. Twigs yellow. F. excelsior aurea. 
Twigs gray. 9. 
. Leaves green. F. excelsior. 
Leaves variegated. 10. 
Leaves with white center. F. excelsior albo-variegata. 
Leaves with white margin. F. excelsior albo-marginata. 
Leaves whitened beneath: fruit rather stout, scarcely 
wing-margined: leaf-scars concave at top. 12. 
Leaves merely lighter green beneath: fruit slender, 
the narrow.wing continuing to the base: scar- 
margin not concave. 14. 
Glabrous. 13. 
More or less velvety. F. americana Biltmoreana. 
Leaves uniformly green above. (White ash). F. americana. 
Leaves white-margined. F. americana albo-marginata. 
Glabrous or nearly so. (Green ash). F. lanceolata. 
Twigs velvety. (Red ash). F. pennsylvanica. 
FONTANESIA, 
Deciduous shrubs with slender 4-angled twigs; round ho- 
mogeneous pale pith; opposite or obliquely opposite raised small 
crescent-shaped leaf-scars with 1 bundle-trace; no stipule-scars ; 
