312 25. Conferva. 1. HYDROPHYTA. Plaeellaph. 
Prolifera vesicata, Vaucher, 132. 
Conferva vesicata, 4gardh Disp. ed. 1, 30. 
Conferva alternata, Dillwyn, 43; Engl. Bot. 2304. 
Chantransia vesicata, De Candolle Fl. Fr, 2, 52. 
Floating in ditches and rivulets. 
7qY 3 . 
Tufts closely entangled; threads 6 or 8 inches long; 
joints sometimes alternately green and brownish. 
6. fusca. Threaés brownish. 
Conferva alternata 6, Dillwyn, 
37. Conferva capillaris. Hair crowsilk. 
Threads simple, slender, crisp, proliferous, entangled ; 
joints even, about twice as long as broad, alternately com- 
pressed when dry; spores scattered, or in an oblong spot. 
Conferva fluitans filamentis geniculatis, Dillen Musc. 26. 
Conferva capillaris, Lin. S. P. 1636. 
Conferva crispa, Dillwyn, 46. 
Chantransia crispa, De Candolle Fl. Fr. 2, 52. 
Stones in rapid rivers. 
Threads 8 to 20 feet long, slimy, rough and brittle when 
dry. 
6. ramosa. Threads proliferous. 
Conferva capillaris, Engl. Bot. 2364. 
Prolifera crispa, Vaucher, 130. 
38. Conferva rivularis. Rivulet crowsilk. 
Threads simple, slender, straight, very long, dark green; 
joints about 3 times as long as broad, alternately com- 
pressed when dry; knots pellucid. 
Conferva Plinii, Ger. em. 1570,2; Park. 1261,2; Raii Syn. 58,1. 
Conferva fluviatilis sericea vulgaris et fluitans, Dillen Musc. 12. 
Conferva rivularis, Lin. Sp. Pl. 1633. 
Prolifera rivularis, Paucher, 130. 
Conferva funiformis, Roth Cat. 1, 169. 
Crow-silk. Hairy river-weed. 
Running waters: June to September. 
Tufts 1 to 2 feet long, fluctuating, loosely entangled ; 
threads rather stiff. 
£. aculeata. Branches many, very short, acute. 
39. Conferva compacta. Compact crowsilk. 
Threads simple, slender, compactly entangled, dark 
green; joints rather longer than broad; alternately com- 
pressed when dry. 
