CRYPTOGAMOUS PLANTS OF DEVONSHIRE. 367 



of the year, — from June to September. He adds, 

 that this circumstance is another distinctive mark 

 between F. hypoglossum and F. ruscifolius; Sy- 

 nop. vol. i. p. 9., and Hist. Fuc. vol. i. p. 28. 

 I have no doubt that F. hypoglossum may be ga- 

 thered in the months above named ; but I have to 

 observe, that among the rejectamenta of the sea 

 at Exmouth, I could have collected many hundred 

 specimens in the months of December and Ja- 

 nuary, and many of them in fruit. In February, 

 I found it growing at Torquay. F. ruscifolius I 

 met with at the same time, retaining all Mr Tur- 

 ner's characters of discrimination attached to it. 



(9.) Fucus membranaceus. 



I have here an opportunity, from the valuable 

 information I derived through the kindness of Mrs 

 Griffiths, of correcting an error relative to this un- 

 common plant, in the Hist. Fuc. vol. ii. p. 42., 

 undoubtedly arising from the well-known difficulty 

 of describing marine plants from specimens not 

 perfectly recent. 



Mr Turner describes the root as a callous disk ; 

 but Mrs Griffiths assures me, that it is an exten- 

 sion of a soft spongy substance, somewhat resem- 

 bling the root of F. tomentosus, and covering the 

 rocks in the same manner. 



From this account, it would appear, that F. mem- 

 branaceus, in regard to its root, bears some relation 

 to F. tomentosus and F. bursa, of which a new 



