Plant entirely submerged, except the flowers. Stems branching, usually 1 foot long or longer. Leaves about 1 inch long, spreading nearly at right angles from the stem, only slightly or not at all collapsing when drawn from the water, repeatedly forked into capillary divisions. Flowers white, one-third of an inch broad on stout peduncles, 1 to 2 inches long opposite the leaves, flowering just above the surface of the water; sepals and petals five; petals oblong-oval and blunt. Fruit a small cluster of tiny, apiculate achenes.

In ponds and slow streams, Nova Scotia to British Columbia, south to North Carolina, also in Europe and Asia. Flowering from June to September.

The form illustrated here has the beak of the achenes about 1 mm long, so that it should be classed as Batrachium longirostre (Godron) F. Schultz.

Memoir 15 N. Y. State Museum

Plate 79

A. Stiff White Water Crowfoot

A. Stiff White Water Crowfoot - Batrachium circinatum