242 



2618. C. comatum, H. C. Wood. 



Niagara Falls. " Growing upon the ground in the marshes 

 which border the river just above the Canadian Falls." H. 

 C. Wood. 



906. ANAB^ENA, Bory. 



2619. A. intricata, Kuetz. 



2620. A. Flos-aquae, Kuetz. 



Squaw Island, Niagara River. 



2621. A. gigantea, H. C. Wood. 



Chautauqua Lake, Aug. 1879. This Alga had been driven by 

 the winds into sheltered places along the south-western 

 shore. The immense quantities of the plant gave the water, 

 for several feet from the shore, the color of " pea soup," as 

 mentioned by H. C. Wood, of the same plant in the brick 

 yards at Philadelphia, where he discovered it. 



907. NOSTOC, Vauch. 



2622. N. comminutum, Kuetz. 



In a pond at " The Front," Buffalo, May, 1882 ; Niagara City, 

 Ont., June, 1882, and elsewhere. 



2623. N. commune, Vauch. 



Niagara Falls, Oct. 2S, 1882. Abundant on moist ground, 

 rocks, etc. Our plant agrees well with Rabenhorst's des- 

 cription except in the distance between the cells : — ours 

 having the cells not loosely, but closely connected. H. C. 

 Wood points out the same variation. 



2624. N. caeruleum, Lyngb. 



In ponds at " The Front," Buffalo, May and June. 



2625. N. sphaericum, Vauch. 



908. PHORMIDIUM, Kuetz. 



2626. P. vulgare, Kuetz. 



Aurora, Erie Co., Wolle. 



909. OSCILLARIA, Bosc. 



2627. O. Imperator, H. C. Wood. 



Buffalo River, floating in dark, olive-colored masses, Sept., 

 1882. 



2628. O. neglecta, H. C. Wood. 



Trout pond at.Gowanda, June, 1882. At various dates in 

 Niagara River, forming colored strata. 



