CRYPTOGAMIA ALG^. 941 



lengthways upon its furface, from the bafe al- 

 moft to the fummlt. Sometimes there is only 

 a fingle row extended up the middle of the 

 leaf. But in either cafe thefe fmufes are full of 

 a prolific mucus, containing many naked grains 

 or feeds without capfules. 



The plant is often infeded with the Sertularia 

 ciliata. Un. fyji. nat. p. 13 16. Ellis, coral. 

 pL 20. N. 5. dy D. -, and with Sertularia dicbo' 

 toma.fyfi. nat, 13 12. ElUs. cor. pi. 12. n. 18. 

 «, A. 



We frequently obferv'd fix'd to the rocks, and 

 floating under the fea-water, what we appre- 

 hend to be junior plants of the foregoing. 



The leaves were fimple and riblefs, from four 

 inches to a foot in length, of a pale green co- 

 lor, waved on the margins ; but what ftrikes 

 the obferver is, that their fubllance is quite 

 pellucid and membranaceous, fo thin and deli- 

 cate, that a dry leaf laid in the palm of the 

 hand is fenfibly affeded, and curls with the 

 heat. 



This we take to be the kind defcrib'd by Bauhine^ 

 in his Prodromus, p. 154. n. 4. where he fays 

 it has a fibrous root, and a fmall Italk three 

 inches long. But Linn^us quotes this plant of 

 Bauhine as a fynonym of his ULVA latijfma, 

 Sp. pi, 1639. n. 4. May not therefore the 



plane 



