Nasturtium microphyllum Boenn. ex Reichenb.
one-row watercress, narrow-fruited watercress
one-row watercress, narrow-fruited watercress
July 26,
Arnold Arboretum, Jamaica Plain, Boston
Silicles plump (terete), which makes Nasturtium different from Cardamine; with relatively long style beaks (up to 2 mm). The latter character helps differentiate between this species and N. officinale.