CL. XXIV.] 42. CERATOSTOMA FIMBUIATUM. 459 



Synwiymes and Figures, 



Cava, Imperat. Hist. Nat. p. 858. 

 Fucus cavus, C. Bauh. Pin. J. Bauh. Hist. 3. 791. 

 Lactuca marina tubulosa, Rai Hist. 1. p. 77. 

 Folliculus marinus, Losel, Fl. Pruss. p. 75. 

 Conferva marina tubulosa, Dillen. Giess. App. p. 16. 

 Conferva latifolia flavescens et tubulosa major, Buxb. Hal, 

 p. 79. 



Fucus tubulosus intestinorum forma, Tourn. Inst. p. 568. 



Buxb. Cent' 5. t. 13. f. 1. (male). 

 Ulva marina tubulosa, Kai Syn. p. 62. 

 Ulva tubulosa simplex. Linn. Lapp. p. 348. 

 Tremella marina tubulosa. Dill. Hist. Muse. p. 47. t. 9- f 7. 

 Ulva tubuiis cylindricis, Hall. Stirp. n. 2128. 

 Ulva intestinalis. Linn. Fl. Suec. n. 1154. Sp. PI. cel. Reich. 



4. 583. Light/. Scot. p. 368. liuds. Angl. 568. Wither. 



Jrrang. 4. 141. De Cand. Fl. Fran^. 2. p. 8. iMmoiir. 



Thalass. p. 65. Agardh. Syn. p. 45. 

 Conferva intestinalis. Roth, Catal. 1. 154. Wulff. Crypt 



Aqii. p. 13. Schumach. Sueiland. 2. p. 103. 

 Scytosiphon intestinalis, Lyngb. Hydropli. p. 67. 



Geog raphical Distributimi. 



This alga is found in all waters, from the polar circle to 

 the tropic, in the northern hemisphere : whether it also grows 

 in the southern hemisphere I know not, 



yH. Myeohmyci. 

 42. 



Ceratostoma fimbriatum. Fries. 



On the leaves of beeches and hazel bushes, we observe dark 

 spots during summer, — results of the decaying vegetation 

 of the leaf, and of another kind of vegetation which has be- 

 gun, but which is often interrupted in the germ. In this last 



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