Pl.cell.aph. 2.THALASSIOPHYT. 45. Ulva. 346 
Rocks on the sea-shore. 
Thalli_ gregarious, slenderer at bottom, 2-forked or pal- 
mate with 2 or 3 lobes. 
8. marginifer. Thallus oblong, mostly simple, edge pro- 
liferous. 
Ulva caprina, Fl. Norv. 2, 126. 
y- laciniata. Thallus finely jagged; lobes linear. 
Ulva delicatula, Gunn Fl. Norv. 8. 
Fucus delicatula, Fl. Dan. 1190. 
Fucus laciniatus, Wahl, 497. 
12. Ulva solslifera. Young-bearing laver. 
Thailus rose-red, membranaceous, flat, palmately lobed ; 
edge proliferous; doles dilated, tip many-cut, toothed. 
Fucus soboliferus, Fl. Dan. 1065; Engl. Bot. 2133; Turner Hist. 1,97. 
Halymenia sobolifera, Agardh Syn. 36. 
Ulva sobolifera, Lyngbye Hydr. Dan. 27. 
Sea-shores. 
Thallus 3 to 6 inches long, branched. 
XXI. 46. SCYTOSIPHON. Lyngbye.  Leathernpipe. 
Thallus round, tubular, continuous, even, branched or 
simple, leatherlike, membranaceous; sporidia solitary or 
crowded, scattered over the whole surface of the thallus; 
stirps 0. 
a. Thallus green, membranaceous. 
1. Scytosiphon intestinalis. Gut leathernpipe. 
Thallus light green, membranaceous; tule simple, bent, 
wavey, puckered. 
Ulva marina tubulosa, intestinorum figuram referens, Raii Syn. 62,4. 
Ulva intestinalis, Zin. §. P. 1632. 
Conferva intestinalis, Roth Cat. 1, 159. 
Scytosiphon intestinalis, Lyngbye Hydr. Dan. 67. 
Staenant fresh-waters, and the sea-shore. 
Thaili aggregate, resembles the intestines of animals as 
it floats on the water. 
B. crispus. Thallas compressed, wrinkled and crisp. 
Ulva intestinalis, Roth Cat. 1,159. 
Thallus olive green, leatherlike. 
2. Scytosiphon compressius. Compressed leathernpipe. 
Thallus dark green, membranaceous, round, threadlike, 
tubular, branched, compressed; branches scattered, simple, 
decumbent. 
