XXI 



3. These species have their northern limit in South Scotland 

 and occur southward to North Africa or farther south. Some of 

 them however do not go farther south than lo England, West-France 

 and some other have not been found as far north as Scotland. 



Rhodophijceæ. 

 Erj'trotrichia investiens Bornet. 

 E. ciliaris (Carm.) Batt. 

 Goniotrichum elegans (Chauv.) Le Jol. 

 G. ramosum (Thwaites) Hauck. 

 Chantransia Chylocladiæ (Batt.) (^endeni. 



in Scotland). 

 Nemalion helminthoides (Vell.) Batt. 

 Scinaia furcellata (Tiirn.) Bivona. 

 Choreocoiax tumidus Reinsch. 

 Naccaria Wigghii (Turn.) Endl. 

 Gelidium aculeatum (Grev.) Batt. 

 G. pulchellum (Grev.) Kiitz. 

 G. attenuatum (Hook.) Thur. 

 Pterocladia capillacea (Grev.) Bom. 

 Phyllophora Traillii Holmes. 

 Actinococcus aggregatus Schmitz. 



A. peltæformis Reinsch. 

 [Agardhiella tenera (J. Ag.) Schmitz.] 

 Gracilaria multipartita (Glem.) J. Ag. 

 Hypnea musciformis (Wulf.) Lam. 

 Cordylecladia erecta (Grev.) J. Ag. 

 Lomentaria uncinata Menegh. 

 [Ghondria littoralis Harv.J 

 [Polysiphonia subtilissima Mont.] 



P. Richardsoni Hook.(endem.in Scotland). 

 P. fruticulosa (Wulf.) Spreng. 

 P. variegata (Ag.) Zanard. 

 P. subulifera (Ag.) Harv. 

 Pterosiphonia thuyoides (Harv.). 

 [Bostrychia rivularis Harv.J 



B. scorpioides (Gmel.) Mont. 

 Dasya elegans (Mart.) Ag. 

 Sphondylothamnion multifidum (Huds.) 



Nag. 

 Spermothamnion strictum (Ag.) Ard. 

 S. barbatum (Ag.) Born. 

 Ptilothamnion pluma (Dillw.) Thur. 

 [Griffithsia tennis Ag.] 

 Halurus equisetifolius (Lghtf.) Kutz. 

 Gallithamnion acrospermum J. Ag. 



Compsothamnion gracillimum (Harv.)Någ. 

 Antithamnion cruciatum Ag. 

 Spyridia filamentosa (Wulf.) Harv. 

 Ceramium pennatum Arn. 

 Dudresnaya coccinea Born. 

 Nemastoma Bairdii Farl. 

 Corallina squamata Ellis et Sol. 



40 4- 5 species. 



Phæophyceæ. 

 Ectocarpus Zanardinii Cr. 

 E. parasiticus Sauv. 

 E. simplex Cr. 

 E. Crouani Thur. 

 E. Landsburghii Harv. 

 E. distortus Carm. (endem. in S. Scotland). 

 E. Sandrianus Zanard. 

 E secundus Kiitz. 

 Sorocarpus uvæformis Pringsh. 

 Myriotrichia densa Batt. 

 Halothrix lumbricalis (Kiitz.) Rke. 

 Myriactis stellulata (Griff.) Batt. 

 M. Areschougii (Cr.) Batt. 

 M. pulvinata Kutz. 

 Elachista flaccida (Dillw.) Aresch. 

 Sphacelaria plumigera Holmes. 

 S. plumula Zan. 

 S. tribuloides Menegh. 

 Halopteris filicina (Grat.) Kutz. 

 H. scoparium (L.) Sauv. 

 Asperococcus scaber Kuck. 

 Mesogloia Griffithsiana Grev. 

 Stilophora tuberculosa (Horn.) Hke. 

 Spermatochnus Lejolisii (Thur.) Rke. 

 Bifurcaria tuberculata Stackh. 

 Cystoseira ericoides (L.) Ag. 

 C. granulata (L.) Ag. 

 [Sargassum bacciferum (Turn.) J. Ag. 

 [S. filipendula Ag.] 

 Taonia Atomaria (G. et W.) Ag. 



28 -|- 2 species. 



The following table shows how many species of each group, 

 each flora in question contains. 



