Rhode Island Plants. 39 



communicated to me by Prof. Gray, and I have admitted into 

 my list no plant but such as he has determined, and that I 

 know to be of Rhode Island growth. 



1155. Sargassum vulgare, Ag. var. tenuifolium, Grcv. Alg. 

 Brit. p. 2, t. 1. Harv. ! Brit. Alg. p. 17. Found attached 

 to rocks, Narragansett pier ! Newport ! Sogconnet point ! With 

 air vessels, Bristol ferry, Prof. Bailey ! 



J 156. Fucus vesciculosus, Linn. Grev. ! Alg. Brit. p. 12. 

 Harv. Brit. Alg. p. 20. Rocky shores, abundant. 



1157. F. nodosus, Linn. Grev. ! Alg. Brit. p. 16. Harv. ! 

 Brit. Alg. p. 21. Abundant. 



1158. Laminaria digitata, Lamonr. Grev. ! Alg. Brit. p. 

 27, t. 5. Harv. Brit. Alg. p. 23. I have not detected this 

 species attached, but found a specimen floating near the shore 

 at Narragansett pier. 



1159. L. saccharina, Lamonr. Grev. I Alg. Brit. p. 31. 

 Harv. ! Brit. Alg. p. 24. Very common. 



1160. Laminaria? trilaminata, Harv. MSS. (n. sp.) 

 Found floating near Narragansett pier. " A perfect specimen 

 must be seen before I can fix the genus of this plant, or prop- 

 erly judge whether it be a true species or a monstrosity of L. 

 saccharina. I have never seen any thing like it." — Harv. MSS. 



1161. Dictyosiphon fceniculatus, Grev. Alg. Brit. p. 56, 

 t. 8. Harv. ! Brit. Alg. p. 32. Narragansett pier ! 



1162. Punctaria tenuississima, Grev. Alg. Brit. p. 54. 

 Harv. ' Brit. Alg. p. 34. Abundant, parasitic on Zostera 

 marina. 



1163. Chorda loment aria, Grev.! Alg. Brit. p. 48. Harv.! 

 Brit. Alg. p. 35. Common on the shores of the south part of 

 the State. 



1164. C. filum, Lamour. Grev. ! Alg. Brit. p. 47, t. 7. 

 Harv. ! Brit. Alg. p. 36. Yery abundant ; same localities as 

 the preceding species. 



1165. Cladostephus spongiosus, Ag. Harv. I Brit. Alg. p. 

 36. On rocks, southern shores of the State. 



1166. Ectocarpus fasciculatus, Harv. I Brit. Alg. p. 40. 

 On larger Algee, abundant. 



