288 8. Lemania. 1. HYDROPHYT. Pl. cell. aph. 
C. Lemanipea. Thallus tubular, cylindrical, not 
jointed, torulose, inflated at intervals, cartilaginous, mem- 
branaceous, regularly cellular; sporidia in branched, beaded 
filaments in pencilshaped tufts, scattered on the inner sur- 
face of the tube, afterwards free and filling the tube. 
VIII. 8. LEMANIA. B. de St. Vincent. Leman. 
Thallus simple or branched, olive green, papillose on the 
outside; sporidia elliptical F resh-water. 
1. Lemania fluviatilis. River leman. 
Threads olive-colour; internodes cylindrical, 5 times as 
long as broad; papille mostly 3 together; branches and 
second branches narrower at both ends. 
Conferva fluviatilis lubrica setosa equiseti facie, Dillen Musc. 7, 47. 
Conferva fluviatilis, Lin. S. P.1635; Engl. Bot. 1163. 
Polyspermum fluviatilis, Vaucher, 99. 
Chantransia fluviatilis, De Candolle Fl. Gall. 2, 50. 
Lemania corallina, Bory in Berl. Mag. 1809, 277. 
Nodularia, Link in Schrad. Journ. 1809, 9. 
Lemania fluviatilis, 4gardhk Syn. 70. 
Nodularia fluviatilis, Lyngbye Hydr. Dan. 99. 
On stones in rapid rivers; summer. 
Aoldfasts callous, blackish; threads numerous, simple 
or branched, 6 inches long, each knot is composed of 2 or 
3 papillee, brittle when dry. 
2. Lemania torulosa. Swollen leman. 
Threads mostly simple, narrower at bottom, generally 
thicker at top, olive-colour: zméernode about 3 times as long 
as broad. 
Conferva fluviatilis nodosa, fucum emulans, Dillen Musc. 39. 
Conferva torulosa, Mohr in Schrad. Journ. 1801, 324. 
Conferva fluviatilis 8, Engl. Bot. 1763, 
Lemania torulosa, Agardh Disp. 28. 
In mountain-streams.—A doubtful species. 
% 
D. VaucueripEx. Thallus threadlike, tubular, not 
jointed, mostly branched, cartilaginous, membranaceous, 
regularly cellular; branches vesicular, clubshape or linear; 
sporidia globose, scattered in the tubes of the thallus, or 
in the branches or ends of the thallus. 
1X. 9. BRYOPSIS. Lamouroux. Moss-weed. 
Thallus pinnate, tubular, not jointed, membranaceous, 
gelatinous, cellular ; brancnes linear ; sporidia globose, 
green, scattered in the stem and branches.—Marine. 
% 
