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Pl.cellaph. S.THALASSIOPHYT^. 45. Ulva. S4>S;
2. TJlva latissima. Broadest laver.
Thallus yellow-green, solitary, oblong, very broad, flat^
edge waved.
Ulva laiissima, Lin. S. P. 1632.
Sea-shores.
Thallus 2 or 3 feet long, nearly a foot broad, edge waved,
base not narrower.
3. Ulca bullosa. Bullate laver,
Thallus dark green, dilated, at first tubular, then flat-
tened, sinuous, rather plaited, slippery.
Ulva palustris lactucEe marinai similis, sed multo minor et tenerior^
Dilkn in liaii Syn. 63, 6,
Tremella palustris, vulgari similif, sed minor et tenerior, Dillen Mmc^.
44.
Ulla bullosa. Roth Cat. 3, 329.
Ulva Lactuca /3, Hudson Fl. Angl. 567.
On aquatic plants in ditches; annual; Sept. to May»
Thallus solitary or aggregate.
4-. Ulva lanceolata. Lance lavet^.
Thallus pale green, ovate, spearshape.
Ulva lanceolata, Lin. S. P.
Rocks on the sea-shore.
Thallus 9 inches to a foot long.
5. Ulvafasciaia. Banded laver\.
Thallus green, aggregate, lanceolate, not cut, narrower
at both ends, flat ; edge flexuous.
Ulva Linza, Lin. S. P. 1633.
Tremella marina fasci^ita, Dilkn in Raii Syn. 62, 3 ;
Thallus 6 to 12 inches long, an inch broad.
Muse. 46.
6. Ulva plicata. Folded laver,
Thallus dark green, connate at bottom, imbricate, plaitedj.
ovate, blunt.
Lichen mariniis, TaberntEtn. Icon. 814.
Bryon lactucaefolium, Lobel,2,2'il.
Ulva plicata, Flor. Dan. 829.
Rocks and the sea-shore.
Thalli many, aggregate, umbilicated at bottom, in the
centre.
7. Ulva terrestris. Land laver^
Thallus dark green, aggregate, ovate, crowded, slender,,
decumbent, plaited, crisped.