Plate LXVI.—Gleditsia triacanthos.
| 1. Winter buds. |
| 2. Winter buds with thorns. |
| 3. Flowering branch. |
| 4. Sterile flower, enlarged. |
| 5. Flowering branch, flowers mostly fertile. |
| 6. Fertile flower, enlarged. |
| 7. Fruiting branch. |
| 8. Leaf partially twice pinnate. |
Robinia Pseudacacia, L.
Locust.
Habitat and Range.—In its native habitat growing upon mountain slopes, along the borders of forests, in rich soils.
Naturalized from Nova Scotia to Ontario.
Maine,—thoroughly at home, forming wooded banks along streams; New Hampshire,—abundant enough to be reckoned among the valuable timber trees; Vermont,—escaped from cultivation in many places; Massachusetts, Rhode Island, and Connecticut,—common in patches and thickets and along the roadsides and fences.
Native from southern Pennsylvania along the mountains to Georgia; west to Iowa and southward.
Habit.—Mostly a small tree, 20-35 feet high, under favorable conditions reaching a height of 50-75 feet; trunk diameter 8 inches to 2 ½ feet; lower branches thrown out horizontally or at a broad angle, forming a few-branched, spreading top, clothed with a tender green, delicate, tremulous foliage, and distinguished in early June by loose, pendulous clusters of white fragrant flowers.