124 
NI 
ACERACEAE, 
. Buds with two scales: leaves many-lobed. 4. 
Buds with several exposed scales. 13. 
. Pubescent for a time: lobes typically short. 5. 
Glabrous: lobes separated fully half-way to base. 7. 
. Lobes short. 6. . 
Lobes separated nearly to base. A. japonicum Parsonii. 
. Leaves green. A. japonicum. 
Leaves yellow. A. japonicum aureum. 
. Leaves not variegated. 8. 
Leaves variegated. II. 
. Leaves green. Io. 
Leaves purple. A. palmatum atropurpureum. 
Leaves red. 9. 
. Lobes broad. A. palmatum sanguineum. 
Lobes dissected. A. palmatum ornatum. 
. Lobes dissected. A. palmatum dissectum. 
Lobes broad. A. palmatum. 
- Lobes’ broad: ‘12: 
Lobes dissected: mottled. A. palmatum Frederici-Guilelmi. 
. Leaves mottled. A. palmatum bicolor. 
Leaves rosy-margined. A. palmatum roseo-marginatum. 
. Leaf-scars. glandular at top: leaves compound. 
(Box-elder). 14. 
Leaf-scars not glandular: leaves simple. 19, 
. Twigs green. 15. 
Twigs deep purple. A. Negundo violaceum. 
. Leaves not variegated. 16. 
Leaves variegated. 17, 
. Leaves ‘green. A. Negundo. 
Leaves yellow. A. Negundo auratum., 
. Leaves mottled. A. Negundo aureo-maculatum. 
Variegation marginal. 18. 
. Margin white. A. Negundo argenteo-variegatum. 
Margin yellow. A. Negundo aureo-marginatum. 
. Buds ovoid or short-conical. 20. 
Buds conical, pointed, gray-pubescent. (Sugar ma- 
ples). 5o. 
