Class VI. Order I. 70 



97. PRINOS. 

 PRINOS VERTICILLATUS. L. Black Jllder. 



Leaves oval, serrate, acuminate, hairy on the 

 nerves beneath. 



Syn. PRINOS GRONOVII. Mich. 



Black alder or Winter berry is readily discovered in woods 

 and swamps after the leaves have fallen, by its crowded scarlet 

 berries which remain on the small branches. It is a large 

 shrub, with small, white, six parted flowers, in lateral or axillary 

 bunches, appearing in June and July. The bark is consider- 

 ed medicinal. 



PRINOS GLABER. L. Evergreen Winter berry. 



Leaves wedge-lanceolate, glabrous, serrate at 

 tip. 



Distinguished from the former by its smooth coriaceous, 

 evergreen leaves, which are of a bluntish lanceolate form, with 

 a few small remote teeth at the end. Flowers axillary. 

 Swamps. June, July. 



98. PONTEDERIA. 



PONTEDERIA coRDATA. L. Pickercl-u'eed. 



Leaves heart shaped, flowers spiked. L. 



During the month of July, the tall blue spikes of Pontede- 

 ria are very conspicuous on the borders of ponds and rivers of 

 deep water and muddy bottoms. Stem erect, fleshy, cylindri- 

 cal. Leaves long, heart shaped, very smooth, with convergent 

 nerves. Stem leaf sheathing at the base of its stalk. Flowers 

 in a cylindrical spike, proceeding from a short spathe. Corol- 

 las irregular, somewhat labiate. Perennial. 



