PI. cell. aph. 2.THALASSI0PHYTiE. 41. Zonar. 341 
2. Zonaria alomaria. Speckled girdleweed. 
T/iallits flat, dilated above, fanshaped, palmate; lobes 
linear, slightly divided. 
Ulva atomaria, Woodward in Tr. Lin. Soc. 3 , 53^ Engl. Bot . 419. 
Dictyota zonata, Lamouroux Diss. 25, 1. 
Zonaria zonata, Agardh Dispos. 20. 
Sea-coasts. 
Thallus yellowish brown, edge not cut. 
0. ciliata . Lobes slender ; edge fringed, serrated. 
Dictvota ciliata, Lamouroux Diss. 
Ulva atomaria, Engl. Bot. the lower fig. 
Ulva serrata, De Cand. FI. Gall. Syn. 3. 
XVII. 42. DICTYOTA. Lamouroux. Diclyofe. 
Thallus flat, membranaceous, ribless, mostly forked, 
much branched; sporidia immersed in interrupted series, 
or scattered. 
1. Dictyota dickotoma. Two-forked dictyote* 
Thallus olive, yellowish, membranaceous, forked ; lobes 
linear, not cut. 
Fucus membranaceus dichotomus gramineus, Raii Syn. 45, 2. 
Ulva dichotoma, Lightf. Scot. 975; Engl. Bot. 774. 
Dictyota dichotoma, Lamouroux Diss. 
Zonaria dichotoma, Agardh Disp. 22. 
Sea-coast. 
0. inequalis. Last lobes 3 or 4 times narrower than the 
primary ones. 
y. implexa. Thallus small, lobes very slender, linear, 
entangled. 
Ulva dichotoma, Engl. Bot. 775, lower fig. 
Dictyota implexa, Lamouroux Diss. 
2. Dictyota ligulata . Touguelike dictyote. 
Thallus flat, membranaceous, reddish, branched ; branches 
dilated, rather forked with obtuse angles, terminating with 
straplike fringed segments. 
Ulva ligulata, Woodward Tr. Lin. Soc. 3,54; Engl. Bot. 420. 
Zonaria? ligulata, Agardh Disp. 21. 
Sea-shores. 
XVIII. 43. DICTYOPTERIS. Lamouroux. Dictyoptere . 
Thallus flat, membranaceous, midribbed, olive-green, 
forked, branched ; sporidia in clusters ; clusters prominent* 
scattered, in a line on each side of the midrib. 
