275 



NOTES ON ALG^ COLLECTED AT GOUMIRE 

 AND THIRKLEBY, WITH 

 NOTICE OP A NEW FORM. 



W. BARWELL TURNER, F.R.M.S., F.C.S. 



Although favoured on our late visit to the above places with 

 charming weather, the recent fiery visitation from ' Jupiter Sol ' was 

 painfully apparent to naturalists of aquatic tendencies, who found 

 their ' happy hunting grounds ' at the margin of the Lake, and the 

 sphagnum beds at the N.E. corner thereof, converted into semi- 

 Saharas. 



Under the circumstances no great ' find ' was to be expected — 

 much of our 'gatherings' being inud^ pure and simple — yet a careful 

 and extended search has yielded several notable things. One or two 

 points in the gatherings made by the writer are rather curious, viz., 

 that (excepting the large filamentous species of Confervae and the 

 Diatoms) the collection shows a fair number of Algal species^ which, 

 however, as individuals^ are but few ! The list, such as it is, shows 

 that Gormire Lake, all the better for being land-locked and with 

 rocky basin, is a very promising spot ; and I trust that this may again 

 be well worked under more auspicious weather. 



The species noted are \ — Gonium pectorale, Oocystis agardhiana, 

 Glceocystis ampla^ G. vesiculosa, Botryococcus braunii, Chlorococcum 

 gigas, Ophiocytiiim cochleare, Stichococciis bacillaris, Hydrocytiiim 

 acuininahun, Fandorina mormn, Polyedrium lobulatum, sterile speci- 

 mens of Zygnema and Spirogyra (undeterminable), Zygogoniutn 

 ericetorwn a, and Z. terrestre. 



Diatoms. — Not determined. Vast numbers of small JVaviculcg, 

 and a few individuals of Staurofieis and Pinmdaria. 



Desmidie^ — Gormire : Cosmariiim phaseolus, C. margaritiferiiin, 

 C. portianum, C. reniforme, C. pyramidatum, C. crenatuni, C. cucu7?iis, 



C. meneghinii, C. monornazum jS polymazum, C. siibcrenatum, C. 

 anisochojidrum, Docidiuvi clavatum, D. ehrenbergii, D. tnincatum, 



D. truHcatum /S crassum (this form was described from Siberia by 

 Boldt, in 'Sibir. Chloroph.,' and last year I found it in abundance 

 near Bowness, Windermere), D. truncatum y labiatum var. no v. 

 (this curious variety has, on either side, almost at end of frond, a 

 kind of projection or ' lip ' — unde nomen. This, which I have not 

 observed in any other Dociditwi, is very peculiar, and seems to be a 

 sort of link between this genus and Tetmemorus. It has been before 

 seen by me in specimens from India and America), Feniuvi digitus, 

 P. lamellosum, P. minutum, Closterium ehrenbergii, CI. lanceolatu?n, 



Sept. 1887. 



