6 TRANSACTIONS OF THE [ocT. 38, 
sword-shaped, flat and nearly as long as the body of the achene. 
The species ranges from the maritime Provinces of Canada to 
Minnesota, south at least to Pennsylvania and Kentucky. Iam 
not sure that it occurs further south and it is certainly most 
abundant northward. 
6. Ranuncutus patmatus, Ell, Sk. Bot. S. C. and Ga. ii. 60, 
(1824). 
This plant of pine-barren swamps and river-shores of South 
Carolina, Georgia and Florida, included in R. septentrionalis by 
Dr. Gray, but maintained as a species in Dr. Chapman’s 
Southern Flora, appears to me as perfectly distinct. It is a 
very weak, slender species, forming long runners, is somewhat 
hirsute or glabrous, and has ternately divided, comparatively 
small thin leaves with obtuse, cleft and dentate segments. The 
flowers in specimens from Dr. Chapman are less than a half- 
inch broad, the achenes are few (3-6), oblong, very broadly 
margined and provided with a stout, flat, sword-shaped beak. 
These six species may be briefly diagnosed as follows : 
Beak of the achene less than half its length, 
Petals much longer than the spreading repals. 1. R. repens. 
Petals equalling or shorter than the reflexed Sepals, 2. R. Macounit. 
Beak of the achene more than half its length. 
Beak subulate, curved. Leaf-segments broad, oblong or obovate. 
3. R. hispidus. 
Leaf-segments narrow, oblong-linear. 4, R. fascicularis. 
Beak stout, triangular, sword-shaped. 
Leaf-segments acute; flowers large. 5. R. septentrionalis. 
Leaf-segments obtuse ; flowers small. 6. R. palmatus. 
Prof. Martin exhibited samples of Rock Salt from the mines 
at Leroy and Livonia near Rochester, N. Y. 
Remarks on Summer Work were made by Mess. Britton, Bol- 
ton, Casey, Jacoby, Rees, Osborn, Dean, Martin, Wilson and 
others. 
Prof. Osborn announced that the Section of Biology would 
organize after the adjournment of the Academyand invited 
members to take part. 
Meeting adjourned. 
