r 



N° 6 26* Anni5e 1899 



REVUE BRYOLOGIQUE 



■ Paraissant tous les Deqx Mois 



Les Manuscrits doivent etre ecrits en francais, en latia ou en anglais 



Sommaire du n^ 6 



Hyp. canarieiise et H. circinale. Dixon.— Brum nieeseoides. Dixon.— Une 

 excursion a Jersey. Martlx. — Fissidens Cyprius. DiSMi£a. — Brvum 

 Lawersianum. Philtbert. — Bibliographic. — Erratum.— Table de la 

 26' ann6e. 



Hypnum canariense (Mitt.) Jaeg, et Sauerb. and H. 



circinale Hook. 



■t 



There has for some time existed a considerable difference 

 of opinion as to the plants gathered from time to time at 

 Killarney, Ireland, and variously recorded and distributed 

 under the above names. I regret that in my Handbook 

 (Student's Handbook of British Mosses p. 478)1 have done 

 something to perpetuate the confusion. I there stated on 

 the authority of Mitten that Moore's plant from wet rock?, 

 Killarney, which Gardot referred to H. circinale Hook. (Rev. 

 Bry. 1890j p. 17) was really //. canariense, and that Gardot 

 was in error in naming it as he did. M^. Gardot however 

 assures me that the plant in question was certainly H. 

 circinale^ and I am sorry that I too hastily accepted the 

 statement that he was in error. 



The fact appears to be that H. canariense and H. circi- 

 nale are so very closely alhed that it would not be surprising 

 that any bryologist (even one so well acquainted with H, 

 canariense as Mitten)^ knowing that the true/?, canariense 

 occurred in Ireland, should have overlooked the slight 



difference in leaf characters which separate the two. 

 However it is of less importance to suggest howadifference 

 of opinion may ha^^e arisen than to ascertain the actual 

 facts. Through the kindness of Gardot and Braithwaite 

 I have been able to examine several of the Irish plants in 

 question, and to compare them with genuine H. canarieiise 

 (from Madeira etc) of Mitten's determination^ on the one 

 hand, and on the otlier with a fairly large series of //. 

 circinale from the United States. Tlfe result of this exa- 

 niination, and of the correspondance I have had with 

 M*" Gardot on the subject has been I think to elucidate some 

 points worth noting; and as I am happy to say 1 find myself 



