194 & r - Goodenough and Mr. Woodward* j Obftrvatkm on 



p. 24. n. % — Petiver, p. 35.* n. 2. Uvedale* p. 6. n. 4. R. Syn. 



p. 43. n. 3. F/. ZW. t. 821. jL/w.v. £/>. /V. />. 1 63 1. F/. ^g-. 



A 5 87. F/. SfcafJ />. 963. Withering, vel 3 . p. 2 54. 

 Habitat in rupibus et faxis mar in is apud Cromer in Norfolcia 

 & alibi frequens. 



Radix callo minimo expanfo — jFVww fimpliciflima, fxpius conferta, 

 aliquando folitaria, fiJiformis, teres, glabra, craflkie penna? corvina> 

 ad duarum vel trium ulnarum longitudinem faepe extenditur; bafi 

 apiceque attenuate, cetera uniformis — Subftantia membranacea et 

 fubfragilis, fiftulofa, conftanter cava abfque medulla — Annuli pluri- 

 mi per totam cavitatem irregulariter pofiti, confervarum fepta asmu- 

 lantes,vifi iunt— Cokr recentis plantar olivaceo-viridis, (iccatae niger — 

 Fruciifcatio incognita. 



This fpecies differs from all other Fuci in habit, and has been fup- 

 pofed by fome authors to belong more properly to the genus Confer- 

 va, from having the appearance of tranfverfe fepta or diaphragms 

 through the whole length of the frond. On holding the plant to the 

 light, it will however be obferved that thefe apparent fepta are 

 placed at unequal diftances, are frequently oblique, and that there 

 are no correfponding contractions vifible on the exterior furface ; 

 in all which particulars it differs from the Conferva?. If the recent 

 plant be differed longitudinally, and examined with a glafs, it 

 will be found, that inftead of fepta thefe are merely rings formed 

 on the internal fubftance of the tube, and that no diaphragms what- 

 ever can have been connected with them, as they are uniform, and 

 covered with a flight woollinefs exactly in the fame manner as the 

 reft of that furface. They do not appear to contain the fructifica- 

 tion, and may perhaps be intended only to ftrengthen the plant, 

 and to enable it the better to maintain its round and tubular form. 



Wc 



