m 25. Conferva. 1. HYDROPHYTE. Pi. cell. aph. 
Prolifera vesicata, Vaucher , 132. 
Conferva vesicata, Agardh Disp. ed. 1, 30. 
Conferva alternata, Dillwyn , 43 ; Engl. Bot. 2304. 
Chantransia vesicata, Be Candolle Ft. Fr. 2, 52. 
Floating in ditches and rivulets. 
Tufis closely entangled ; threads 6 or 8 inches long ; 
joints sometimes alternately green and brownish. 
fi.fusca. Threads brownish. 
Conferva alternata /3, Dillwyn. 
37. Conferva capillar is. Hair crow silk* 
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 genieulatis, Dillen Muse. 26. 
Conferva-capillaris, Lin.S. P. 1636. 
Conferva crispa, Dillwyn, 46. 
Chantransia crispa, De Candolle FI. Fr. 2, 52. 
Stones in rapid rivers. 
Threads 8 to 20 feet long, slimy, rough and brittle when 
dry. 
0. ramosa. Threads proliferous. 
Conferva capillaris, Engl. Bot. 2364. 
Prolifera crispa, Vaucher , 130. 
38. Conferva rivularis. Rivulet crow silk. 
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 serieea vulgaris et fluitans, Dillen Muse. 12. 
Conferva rivularis, Lin. Sp. PI. 1633. 
Prolifera rivularis, Vaucher , 130. 
Conferva funiformig. 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 compact a. Compact crow silk. 
Threads simple, slender, compactly entangled, dark 
green; joints rather longer than broad; alternately com- 
pressed when dry. 
