146 Dr. Goodenough and Mr, Woodward** Obfervaiions on 



1. In the firfl variety the veftcles are ranged on each fide of the 

 rib throughout the frond, and alio at the axillae. The frond itfelr" 

 varies in having its branches from a quarter of an inch to a full 

 inch in breadth, with edges either plane or undulated as in fpiralh* 

 The ends of the branches when in fructification are fwollen and 

 fomewhat acute. 



2. The variety divaricates is remarkable for having the bladders 

 in fome of the axillae (for it is by no means conftant in all) ex- 

 tremely dilated, as if two veficles had been confluent into one ;• 

 m confequence the branches fork off wider than ufual, and become 

 divaricated. We have not obferved this variety in fructification : 

 in Southampton river we have feen it fomewhat twitted. 



3. The variety injlatus is occafioned by a difeafe. By fome means or 

 other a body of air is introduced between the two coats of the frond, 

 and thus gives it a bladder-like appearance. That it is accidental 

 is evident, from its not happening ufually in more. than one or 

 two branches in any given plant. 



4. The variety acutus we fo call from the lanceolate terminations 

 of its branches. The fame plant, however, occafionally furnifh.es 

 lanceolate terminations, and others fomewhat bluntifh. 



5. We can fearcely call foli actus a variety ; it is merely a plant 

 which, in the vigour of its growth having been broken off by fome 

 violence, endeavours to repair itfelf in an irregular manner, pro- 

 ducing clutters of new branches refembling obovate leaves. Thefe 

 are principally from the broken extremities ; but they are alfo found 

 on the fides, and even upon the expanded root. As in cer amides t 

 this proliferous tendency does not take place nnlefs the membrane is 

 torn off. It differs from the firft variety in no other particular. 



6. This is the volubilis of Mr. Hudfon. It cannot however be 

 called a diftincl; fpecies; for its form is the fame nearly as the firft, 



only 



