RECENT LITERATURE ON MARINE ALGiE. 227 



Leucobryum glaucum in Fruit. — The fruit of this moss was 

 found on April 12 by Mr. D. H. Jones and myself in the greatest 

 abundance in a fertile valley about twelve miles from Harlech, 

 Merionethshire (v.-c. 48). The fruit was in splendid condition, 

 the calyptra being in many cases still present, and the fertile 

 plants covered the ground for many square yards. Mr. Jones has 

 also found Fissidens polyphyllus growing abundantly in Wilson's 

 original locality near Aberglaslyn, Carnarvonshire (v.-c. 49). In 

 September of last year I found Tortula pruiceps in some quantity on 

 Moel-yr-dyd, Carnarvonshire, at an elevation of about 1500 ft., and 

 Mr. Jones, who went last week to get me a further supply, informs 

 me that he came across it in several places high up on the same 

 mountain. T. prmceps has not been previously recorded, I think, 

 for Wales. I shall be glad to send specimens of any of the above 

 to anyone desirous of obtaining them, if they will address me at 

 44, Brompton Square, London, S.W. — E. Chas. Horrell. 



PoA flexuosa Wahl. in Britain. — Last August, during my search 

 for Carex helvola, I found a Poa in small quantity on the south-west 

 cliffs of Ben Lawers, which was new to me. Prof. Hackel writes to 

 me, in a letter received this day (14th March), that it is identical 

 with specimens from the Dovrefield of Poa flexuosa Wahl. — the Poa 

 arctica Brown, which is put by Nyman as a subspecies of Poa cenma 

 of Allioni. It has not been previously recorded for Great Britain. 

 — G. Claridge Druce in Ann. Scottish Nat. Hist, for April. 



Veronica polita. — About 100 yards of roadside near Welwyn 

 were noticed covered with Veronica polita, the flowers having com- 

 monly five petals — apparently by the splitting of the lower petal 

 to its base. Abundance of such flowers were to be found. Has 

 this been noticed elsewhere ? — G. L. Bruce. 



NOTICES OF BOOKS. 

 Recent Literature on Marine Ai.gm. 



The number (tom. iv. nos. 1-6) of the Ayinales cles Sciences 

 Naturelles, published in November, 1897, contains two papers on 

 marine algae : " Sur deux Floridees nouvelles pour la flore des 

 Canaries," by Miss Karsakoff; and a "Contribution a la flore 

 algologique des Canaries," by Miss Vickers. 



Miss Karsakoff's paper consists of a minute description of 

 two interesting alg^e, found by Miss Vickers in Grand Canary. 

 Upon one of them the author bases a new genus of Cera7ni(B, 

 named after the finder of the plant, Vickersia. A comparison is 

 made with the neighbouring genera Callithumnion, in its wide 

 sense, and Griffithsia, to both of which Vickersia canariensis bears 

 resemblances. But the limits of neither of these genera are wide 

 enough to admit the new plant, if only on account of the some- 

 what peculiar mode of attachment of the tetraspores, the only 

 fruit known at present for the new genus. The nearest ally of 



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