Mr G. W. Traill on Marine Algce of J&ppa. 



401 



Usual duration 

 of Species. 



Phyllophora nieinbranifolia, 

 J.A,j. 

 nibens, Grcv. 

 Brodiaji, J. Aft. 

 Traillii, Holmes MSS. 



Plocamiuin coccinemn, Lyngb. 



Polysiphonia atro-rubesceus, 

 Grei>. 

 nigrescens, Grcv. 



V. afFinis. 



elongata, Grev. 



fastigiata, Grev. 

 urceolata, Grev. 



formosa? Suhr. 



Polysiphonia divaricata (Ag.). 

 Kutz. 



Polyides rotnudus, Harv. 



PorphjTa laciiiiata, Ag. 

 ainethystea, Kutz. 



leucosticta, Thuret. 



vulgaris, Ag. 

 linearis, Grev. 



Prasiola stipitata, Suhr. 



Ptilota elegans, Bonnem. 

 plumosa, Ag. 



Perennial 



Perennial 



Perennial 



All the year 



Perennial 



All the year 



Mar.-Oct. ; 



sometimes 

 perennial 



Mar.-Oct.; 



sometimes 

 perennial 

 Perennial 



Perennial 



Mar.-Oct. 



May-Sept. 



Perennial 



All the year 

 Apr. -Oct. 



May-Oct. 



May-Sept. 

 Aut. & Win. 



All the year 



Perennial 

 Perennial 



Best time 

 for Fruit. 



Habitat, &c. 



Winter 



Winter 

 Winter 

 Winter 



Summer 



Sum. & Aut. 

 June-Sept. 



June-Sept. 



July- Aug. 



June-Sept. 

 July- Aug. 



August 



Winter 



September 

 September 



September 



Aug. & Sept. 



Winter 



Spr. & Sum. 



June, July, 

 & Aug. ' 



Pools near 1. w. 



Cast ashore, rare. 

 Pools near 1. w. 



1 locks at low tides ; new species 

 (a. W. T., 1880). 



Cast ashore ; sometimes fine. 



Pools near 1. w. ; sometimes fine. 

 Common in pools. 



Not imcommon in pools. 



Piarely growing on shells and 



stones at 1. w. 

 On Fxccus nodosus, common. 

 On rocks at about i t., and in 



pools. 

 In pools, not xinconimon but 



small. 



On piles or stakes, accompany- 

 ing Cer. acanthonotuDi, also 

 on rocks near h. w. , accom- 

 panying Cladoijhora arclius- 

 cula. Identified by Magnus 

 for the German North Sea 

 Expedition, 1872, New to 

 Britain. 



Pools near 1. w. 



On exposed rocks and on alga> 

 between \ t. and h. w. 



On exposed rocks at and below 

 ^ t. Certified by Agardh 

 (Cx. W. T.). 



Epiphytic on alga? from i t. to 

 L w. New to Firth of "Forth 

 (G. W. T.). 



On rocks and algfe in pools be- 

 tween tide marks. 



On rocks and boulders at about 

 the h. w. mark of neap tides. 



Boulders and rocks near h. w. 

 (G. W. T.). New to the Firth 

 of Forth, 



Boulders at 1. w., very rare (G. 



W. T.). 

 Cast ashore ; rare. 



