184 Dr. GocDENOUGH and Mr. WoodwardV Ohfirvaticm on 



Habitat in littore Cornubienfi — D. irenman — Copiofiffime ad fca- 

 las adfcenriis in ponte marino St. Ives. D. Locjiing in Hcrbario 

 Linnxano. 



Radix callus expanfiis, ex quo cauliculi phirimi afTurgunt, con- 

 fciti. Froris filiformis comprefTa palmarisbafi fimplex, mox ramofa 

 rigida. Rami dichotomi, ramulis acutis hinc inde dentibus validis 

 cornuum inftar armatis : hi dentes re vera rudimentalunt aliorum 

 ramulorum. FruSliJicationes globofe, dentium axillis, five fub apice 

 dentiiim affixx — hinc fruftificatio faepius quafi mucrone five feta aut 

 procefTu quodam fubtendi videtur. Color nigro-purpurcus apicibus 

 dilutioribus, fa^pe olivaceis, quod et in F. lumbricali necnon in 

 cacteris accidit. Subflanlia cartilaginea. 



Qbf. Variat magis minufve compreiTa. 



It is but very lately that we have been enabled to clafs this fpe- 

 cics among the tribes which adorn our fhores. We owe this privi- 

 lege to the information given us by the Hon. Dr. Wenman of All 

 Souls College, Oxfoid. 



It will be readily diftinguhhed from any other in this divifion, by 

 the fharp thorny appearance of the plant, and by its feffile globofe 

 fmooth tubercles, not to mention its rigid texture. 



Murray, who was the firft who gave a defcription of this plant, 

 mentions the tubercle as fuftained by a fhort footftalk, which fub- 

 tcnds and is longer than the tubercle. No dependance can be 

 placed upon this remark. The frutlification is always feffile at 

 the bafe or axilla of a little branch. In its perfecl form this little 

 branch proje£ls beyond the tubercle ; but it is rarely found with 

 any regularity in this ftate; for, in confequence of the agitation of 

 the fca, the branch is ofte« broken off; whence the tubercle ap- 

 pears in its true fituation, always feffile, fometimes Cngle on a 



main 



