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314 25. Conferva. 1. HYDROPHYTE. Pl.cellapli.
Sea-coasts on wood.
Threads 6 to 9 inches long, appearing like polished iron
when in the sea, when dry dark green; lower joints short,
alternately compressed when dry; granules contracting in
drying, and forming a black line on each side of the knot.
44. Conferva tortuosa. Winding crowsilk.
Threads simple, slender, rather stiff, curled, twisted,
loosely entangled, dark green ; joints cylindrical, 3 times
as long as broad.
Conferva tortuosa, Dillwyn, 46; Engl. Bot. 2220.
Sea-shore, or salt-water ditches.
Ti//ts rather elastic; k7iots pellucid.
^. ramosn. Threads with open lateral branches.
45. Conferva ramosa. Branched conferva.
Threads simple, very slender, curled, entangled, even
soft, dark lurid green; joints even, rather longer than
broad.
Conferva impleia, Dilluiyti, 46.
Bangia viridis, FL Dan. 1601.
Rocks, salt-water ditches, and on marine plants.
Tnj'ts closely entangled ; threads rather silky not stiff;
knots and edges hyaline; spores ovate.
46. Conferva nummuloides. Money croivsilk.
Threads simple, slender, brittle, yellowish brown; joints
shorter than broad, becoming close, beadlike, and nearly
oval.
ConffTva niimmuloides, Dillwyn, 44.
Fragilaria nummuloides, Lyngbye Hydr. Dan. 184.
Leaves of fresh-water plants.
47. Conferva Yonngana. Young's crowsilk.
Threads simple, slender, bristlelike, in tufts, weak, blunt,
equal, light green; joi7iis as long as broad; knots con-
tracted.
Conferva Youngana, Dillwyn, 102.
Conferva isogona, Engl. Bot. 1930.
Sea-shores, on wood and marine plants.
Tnfi.s yellowish green, half an inch long; threads rather
stiff, not attenuated.