w 

 the Britijh Fua\ with particular Defer iptions of each Species. 1 1 9 



nating joints. The colour is ufually pale red or purple, hut fome- 

 times olive-green, and not un frequently all are found intermixed in 

 the fame fpecimen. 



It is found on all parts of the fouth and weft coafts, growing on 

 the rocks, and on the larger and coarfer Fuci. We have alfo ob- 

 ferved it on the wooden piles on the fides of the pier at Weymouth, 

 and elfewhere. 



The F. repens of Mr. Lightfoot is only a variety, or perhaps 

 ought fcarcely to be called a variety, of this fpecics. The colour is 

 of a darker or purplifh red, but the difpofition of the brandies is 

 much the fame. As far as it has appeared to us, it may be deemed 

 only the young or dwarf plant of arlicu/atus. 



65. Fucus Opuntia. 



I ; . fronde cartilaginea fub-comprefia folida, concatcnatim ar- 

 ticulata, ramoia, ramis uniformibus dichotomis. 

 Dill. 50. t. 10. / 9. A. B. G. D. 

 Ulva articulata £ Hudf. 569. 

 Habitat apud Tenby in Wallia Auftrali. D. Stackhoufe. 

 Adhseret rupibus callo minimo furculos emittente, unde oriuntur 

 crefpites denfi, rupes lichenum more obveftientes. From vix uncialis 

 rubra vel purpurea, nonnunquam paululum virefcens, cartilaginea, 

 articulata, fub-compreffa, folida, ramofa. Rami dichotomi uni- 

 formes. Articuli ovales, quorum fupremi tuberculorum officio fun- 

 guntur, et feminibus minutiffimis congeftis fa'ti funt. 



We have never had an opportunity of examining this little plant 

 ourfelves on its native fhores ; but from the fpecimens which Mr. 

 Stackhoufe has been fo obliging as to communicate, and to accom- 



F f 2 pany 



