THE MARINE ALG^; OF THE OBAN DISTRICT. ^29 



Cohort III.— S I p H o N I xV ^. 

 Order HI— Vaucpieriace^ 



^rlT^^'ir ^*^^^^*"' Woron.-«Mud, Appin " 

 <Uarmichael). ^ ^ 



V. dichotoma Lyngb., var. marina, C". A-.-" Oii 

 FurceUaria, Appin " (Carmichael). 



I found filaments of Vaucheria in several situations, 

 but was unable to determine the species owin^ to 

 absence of reproductive organs. 



Series Ul.~PH^J^OPIIYCE^ 



Cohort I — E c T o c A R p I N .E. 



Order I— De,smarestiace^. 



Desmarestia viridis, Lamx.-Occasionally in 



Loct^ETva" "" '^'""'' Ardchattan Church, 



geLanr"''' ^^^--^^— ^^ ^'^ the district 



Order H— Dictyosiphonace.b. 

 Dictyosiphon foeaiculaceus, Grev.-One of the 

 commonest of Phaeophyce^e in the district. 



Order III — Punxtariace^e 

 Litoslphon pusillus. Har v. -Abundant on old 



fronds of Chorda fihcyn, jJussim. 

 Striaria atteuuata, Grev.-"Atlow water, Appin" 



(Carmichae ) A few fronds of this species -ame p 



rnori.i ''' ''^'^^ ''-''- ^- ^'-/-re without 



sporangia 



Punctaria plantaginea, Grev. - Common on 

 various situations in the district. 



P. latifolia, Grev., var. zosterae, Le Jol. (P. teyitiis- 

 sima, Phyc. Brit.).-Rarely in Loch Etive. 



Order IV.— Asperococ cace^. 



F^rw'"]'"'"^ ^l^^«^f«rmis, Harv., var. filiformis, 

 i^arl.-Fairly common in various algc-e 



Asperococcus echinatus. Grev. -Common and 

 often accompanied by the variety vernl^lX 



