136 Dr. Goodenough and Mr. Woodward'.? Obfervathns on 



but are fometimes obferved on the others. In a young (late they 

 are regularly formed and naked ; but when the plant is more ad- 

 vanced, they frequently grow larger, are irregular in their fhape, 

 and are often in part covered with tubercles, nmiiar to thofe on the 

 terminating foliaceous fegments. 



The diftinctions between this, abroianlfol'ms, and barbatus, are 

 mentioned under thofe fpecies ; but as it has been confounded with 

 concatenates of Linnaeus, it may not be improper to point out in 

 what they differ, notwithstanding the defcribing of the latter does 

 not come within our prefent plan. In famiculaceus the plant 

 branches directly from the root ; in concatenates the principal Item 

 is continued throughout — in the former the branches grow with- 

 out order ; in the latter they are more regularly oppofite than 

 in any other marine plant we have feen — the concatenated 

 veficlcs are larger and fewer in fceniculaceus than in concatenatus^ 

 and in the latter the veficlcs are conftantly naked, never having 

 any tubercles upon them : the whole plant alfo, though perhaps 

 longer, is much more flender, and more delicately formed in all its 

 parts. 



Whether barhaius Sp. PI. fcenkulacens /3 Syfl. Nat. be the plant 

 we have called barbaius, as from the reference to Gmelin might 

 reafonably be fuppofed, or whether it may be fome varied ap- 

 pearance of this plant, it is impoffible from the imperfection 

 and uncertainty of the fpecimens fo named in the herbarium to 

 afcertain. 



This plant is thrown up on the fhore at Weymouth in May, 

 June, and July, and but rarely after that time. 



Obf. Since this article was written, young fpecimens of fenicula- 

 ceus and concatenates have fallen under our obfervation; from which 

 we are enabled to ftate, that in both fpecies the firft branches are 



3 ia 



