N° 3 26° ANNfiE 1899 



REVUE BRYOLOGIQUE 



Paraissant tous les Deux Mois 



L«s Manuscrits doivent etre ecrits en Irancais, en latin ou en anglais 



Sommaire du n"^ 3 



Bryum argenteuni var. lanatum. Salmon. — Remarques a propos des Phi- 

 lonotis adpressa et seriata. Debat. — Note sur TEphemeropsis tjibodensis. 

 Cardot. — Note sur un Hypopterygium du Canada. Kindbero, — Guide 

 du hryologue et du licbcnologuc aux environs de Grenoble, Ravaud. — 

 Cibliograpliie.— Necrologie, — NouvoIIcs. 



Bryum argenteumL. var. lanatum (P. Beauv.) B. et S. 



This moss is not uncommon in warm, dry situations 

 (walls, paths, etc) in the Royal Gardens, Kew. 



In these examples the nerve is distinctly excurrent, and 

 forms the hair-like prolongation of the leaf-apex characte- 

 ristic of the variety. 



The specimens in the Kew Herbarium, from various 

 places, referred to the var. lanatumy all show a similar 

 excurrent nerve. 



In the original description of the plant as Mnium laiia- 

 /«o>« (P. Beauv,, Prod., 75, 1805) nc mention is made of 

 the nerve, and subsequent authoi's, in placing lanatum 

 under B, argcnteum^ where the nerve is always described 

 as ceasing above the middle, have not mentioned the 



point. 



The only exception, as far as 1 can find is Husnot(Musc. 

 Gall., prem. pt., 243), whosays, in describing the leaves of 

 the var. lanatum^ (( nervure tres courte)), and figures the 

 leaf with the nerve ceasing at about one-third of its length. 



A short time ago I received a Bryum from M^ H. H. W. 

 Pearson, collected by him « on the mortar of a bridge, 6200 

 ft., Nuw^ara Eliqa, Ceylon, 1897, » 



This plant proved on examination to be B. argenteum^ 

 var. lanatum^ and here also the nerve was distinctly 

 excurrent. Asia is not given in the geographical distribu- 

 tion of the var. lanatum in Paris' « Index Bryol.)), although 

 it is apparently not uncommon in certain regions there, as 

 thei-e are other Singalese speciinens in the Kew Herba- 

 rium, as well as many Indian ones. 



Renauld and Cardot have described a moss in the Bull. 

 Soc. Roy. Bot. Belg., t. XXXI, p. 167 (1892J as follows; 

 <i /?. argcntcum, var, costariccnse Ren. et Card. {B. 

 imbricatissimum G. Mull, in litt.). — A forma typica 



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