II. Bangioideæ. 



Farn. Bangiacece. 



Porphyra Ag. 



34. P. miniata Ag., emend. K. Rosenv. Grl. Havalg. p. 826, 

 Deux. Mém. p. 44. 



a. typica K. Rosenv. Grl. Havalg. I. c. 



Only a few specimens have been gathered, all belonging 

 to this variety. It was gathered fructiferous in June. The 

 antheridia contained 16 pollinoids. 



In his work about Porphyra H us M attaches much syste- 

 matic importance to the number of pollinoids. I have therefore 

 tried to apply this character on some specimens from Green- 

 land, Iceland, the Færoes and Norway, belonging to P. miniata 

 v. typica^ v. amplissima and v. tenuissima^ and I have found a 

 number of pollinoids somewhat differing from Hus's statements, 

 as will appear from what follows : 



P. miniata v. typica. This variety is not described in 

 Hus's work'). One specimen from Greenland had 16 pollinoids 

 in each antheridium. Another specimen likewise from Green- 

 land generally had 32 pollinoids in each antheridium, but mingled 

 with antheridia containing 32 pollinoids others were found con- 

 taining only 16 pollinoids, and the latter seemed to be at the 

 same stage of development as the former. A Færoese specimen 

 mostly had 16 pollinoids in each antheridium but sometimes 

 only 8. Another Færoese specimen had 32 pollinoids in each 

 antheridium in the lower part of the frond but 16 and 8 in the 

 upper part which seemed to be imperfectly divided. 



■) Henry T. A. Hus: An Account of the Species of Porphyra found on the 

 Pacific Coast of North America. Proceedings of the California Academy 

 of Sciences, third Series, Botany, Vol. II, No. 6. San Francisco 1902. 



') In P. miniata v. cuneiformis Setchell et Hus the number of pollinoids 

 is stated to be 8. 



