EXOTIC GENERA.

Order Xanthoxylaceæ.

AILANTUS glandulosa, [130]

Order Leguminosæ.

ROBINIA pseudacacia, [132]

Order Arctocarpeæ.

MORUS nigra, [134]

Order Cupuliferæ.

CASTANEA vulgaris, [138]

Order Platanaceæ.