The orders pictured are balsaminaceae, rhamnaceae, vitaceae, and tiliaceae. The flowers of these orders that are illustrated include (1) impatiens, (2) rhamnus, (3) vitis, and (4) tilia.

Orders of Balsaminaceae, Rhamnaceae, Vitaceae, and Tiliaceae

The orders pictured are balsaminaceae, rhamnaceae, vitaceae, and tiliaceae. The flowers of these orders…

"Alder Buckthorn. Buckthorn, the name of an extensive genus of trees and shrubs, order Rhamnaceae." -Vaughan, 1906

Alder Buckthorn

"Alder Buckthorn. Buckthorn, the name of an extensive genus of trees and shrubs, order Rhamnaceae."…

Of the buckthorn family (Rhamnaceae), the common buckhorn or Rhamnus cathartica.

Common Buckthorn

Of the buckthorn family (Rhamnaceae), the common buckhorn or Rhamnus cathartica.

Of the buckthorn family (Rhamnaceae), New Jersey tea or Ceanothus americanus.

New Jersey Tea

Of the buckthorn family (Rhamnaceae), New Jersey tea or Ceanothus americanus.

The flower of a Buckthorn.

Flower

The flower of a Buckthorn.

The flower of a Buckhorn, cut in half.

Flower

The flower of a Buckhorn, cut in half.