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Pl.cell.aph S.THALASSIOPHYT^. 46. Scytosip. 347
Conferva fceniculacca, Hudson Fl.ylngl. 59i.
Ceramiiim inflexuin, Roth Cat. 3, 131.
Hippuris setaceus, Barrelier Icon. 1123.
Fucus subtUis, Turner Hist. 2,34.
Scytosiphon fceniculaceus, Fl. Dan. 1595, 1.
Halymcnia fceniculacca, AgarcUi Syn. 38.
Hutcliirisia inflexa, ^gardh Syn. 58.
Sea-shores; annual; spring.
Thalli aggregate, 6 or 9 inches high, pale yellow or
olive.
7. ScytosiphonJistidosns. F'lstular lent hernpipe.
Thallus olive, leatherlike, round, threadshaped, simple,
narrower at both ends.
Ulva fistulnsa, Hudson Fl. ytfngl. 569; Engl. Bot. 642.
Conferva fistiilosa. Roth Cat. a, 169.
Chordaria Filum jS, Agardh Syn. 14.
Scytosiphon fistulosus, Agardh Disp. 24.
Sea- shores attached to rocks.
Thalli numerous, flexuous, gelatinous ; sporidia four to-
gether, disposed longitudinally.
d. Thallus olive ; sporidia clustered.
8. Scytosiphon Jiliformis. Threadlike lealhernpipe,
7 halLus reddish brown, gelatinous, soft, round or compressed;
branches scattered, mostly simple, long.
Conferva filiformis, Fl. Dan. 1480.
Ulva filiformis, Hudson Fl. Angl. 570.
Ulva purpurasfens, Engl. Bot. 641, not of Hudson.
Ulva compressa purpurea, Agardh Syn. 45.
Sea-shores; annual; spring and summer.
Thallus 6 inches high ; tranches alternate, rarely slightly
branched.
9. Scytosiphon Tnrneri. ^ Turner's leathernpipe,
Thallus yellowish brown, membranaceous, finely reticulated,
round, threadshape, simple, attenuated at bottom,
very obtuse at top.
Ulva Turner!, Dillw. in Engl. Bot. 2570.
Gastridlum Opiintia, Lynghye Hydr. Dan. 71.
Sea-shoi"es on rocks and plants ; annual; summer.
Thalli aggregate, 1 to 6 inches long, rarely globose
sporidia in clusters.