288 Mr George Traill on the 



Family.— WRANGELIACE.E. 

 CHANTRANSIA, Fries. 



88. Chantransiasecundata (Lyngl).), Thur. {CallUhamnion secundatum, 



J. Ag.) 

 Epiphytic OB Rliodymenia palmata and Porplvjra lariniata from 

 alDout half-tide level to low-water mark. Usually left uncovered by 

 the tide, and exposed to the light for some hours daily. Annual. 

 May to September. Fruit in summer. 



SPERMOTH AMNION, Aresch. 



89. Spermothamnion Turneri (Mert.), Aresch. {CallWiam. Turneri 



(Dillw.), Ag.) 



Epiphytic on Polyides rotundus, Furcellavia fasti fjiata, Phyllo- 

 2)hora Brodixi, PolysiiJlionia nigrescens, Coralllna offinnalis, tfcc, 

 near low-water mark, in sandy places, east of the old harbour. 

 Always submerged. Annual. May to September. Fruit in sum- 

 mer. The var. variahile, Ag., also occurs. 



Family— CERAiMTACE^. 

 RHODOCHORTON, Niig. 



90. Rhodocliortonfloridulum (Dillw.), Nag. {Callithamnion florklulum 



(Dillw.), Ag. 



On sandy rocks near low-water mark. Usually left dry by the 

 tide, and exposed to the light for several hours daily. All the 

 year. Fruit in autumn and winter. Extremely abundant and fine 

 on sand-covered rocks at the east of the old harbour. 



91. Rhodochorton Rothii {Eng. Bot.), Niig. {Callithamnion RotMi 



(Linn.), Lyiigb.) 



On rocks near high-water mark. Usually in the shade, and always 

 at places which are left dry at ebb tide. Perennial. Fruit in 

 winter. 



92. Rhodoch.ortoii sparsum (Harv.), Kjellra. {Callithamnion sparsum, 



Harv.) 



Epiphytic on stems of Laminaria hyperhorea. Annual. Summer 

 and autumn. 



CALLITHAMNION, Lyngb. 



93. Callithamnion arbusciila (Dillw. ), Lyngb. 



On vertical rocks in the shade, usually a little below half-tide 

 level, in places which are left uncovered by the tide for some hours 

 daily. Perennial, but in poor condition, and stunted, during winter. 

 Fruit from April to September. Abundant at many places. 



94. Callithamnion Hookeri (Dillw.), Ag. 



Common on rocks ; also epiphytic on Claddste^nhus spongiosus, 

 Ptilota elegans, &c,, from about half-tide level to low-water mark. 

 Usually left uncovered by the tide for some hours daily. Annual. 

 March to October. Fruit from May to August. 



