the Brhj/li Fucif ivilb particular Dcfcr'/ptlous of each Species. 145 



Hiilitdt in rupibus ct faxis fubmarinis frequcns. ^ prope Fam- 

 bridgc ferry, EfTcx. Buddie. — In .-i^rtuario Clccftrienfi. Ray. 



Radix callus expanfus — Frons pedalis, bipcdalis, plana, alata, di- 

 chotoma, marginibus integerrimis, ramls fterilibus obtufis — Pertotain 

 paginam pun6la prominula fparfa — Apices valde tumidi ovati acu- 

 tiLii'culi (in cT lanceolati acuti), tuberculati, tubercnlis plurimis con- 

 fertis prominulis — Per totam frondem veficulcc duplici ferie innate ; 

 qiixdam etiam folitariae ad axillas — Color olivaceus — Subjlantia car- 

 tilaginea. 



Var. /3. Ramos ad dichotomias valde divaricates habet, nimi- 

 rum pra2 veficula axillari dilatata, vel forfan pras duabus veficulis 

 coadunatis — Ccetera ut in «. 



Var. y. Rami ex cafu quodam, five forfan morbo inflari viden- 

 tiir, quafi hydropico. 



Var. S'. Omnia habet ut var. «, prasterqnam quod apices lanceo- 

 lati acuti, at in eadem planta, nonnunquam apices hi lanceolati, illi 

 ovati acutiufculi. 



Var. i. Ramis vi flu6tuum abruptis,qu6 injuriam reparare queat, 

 ramulos j^lurimos confertos obovatos plerumque emittit, adeo ut vix 

 varietas dici poteft. 



Var. ^. Frons contorquetur adeo ut non facile explicari poteft— 

 Cstera cum a. habet communia. 



The various authors who have written upon the Fuci, have very 

 unwarrantably divided the varieties included in the denomination 

 •ve/iculofus, into numerous fpecies ; but nature has fhewn the true 

 limit: the appearance of bladders in the frond is its unerring cha- 

 raderiftic. By this mark it becomes feparated from ferraiusy fpiralis, 

 and ceranoides — the fize and fituation of thefe bladders are not 

 fufficiently conftant to conftitute different fpecies. 



Vol. III» U i. In 



