■ "^ CRYPTOGAMIA ALG^. ^4* 



lengthways upon its fiirface, from the bafe al- 

 moft to the lunn, Jt. Sometimes there is only 

 a fingle row extended up the middle of the 

 leaf. But in either cafe thefe finufes aie full of 

 a prolific mucus, containing many naked grams 

 ■ ^ or feeds without capfules. 



The plant is often intffted with tb.e Sertularia 

 ciliata, Lin. fyft. nat. p. 1316. Ellis, coral, 

 pi. 20I N. 5. ^, D. •, and with Sertularia dicho- 

 toma. fyfi.nat. 13 12. Ellis, cor. pi. 12. 7t. 18. 

 a, A. 

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

 floating under the fea-water, what we appre- 

 hend to be iuniqrDlants of the foregoino;. 

 p ' The leaves were fimpie and riblefs, from four 



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

 ' ■ ' lor, waved on the margins ; but what ftrikes 

 the oblerver is, that their fubftance 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 PrcdrcfTHSi p. 154. n. 4. where he fiys 

 it has a fibrous root, and a fmall flalk three 

 inches long. But Linnaus quotes this plant of 

 Batthine as a fynonym of his ULVA latijjima, 

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

 "■ "«' plant 



