REVUE BRYOLOGIQUE 



115 



become papillous from the yet not perfectly absorbed an- 

 therozoides. Thus far I had occasion to observe the fecun- 

 dation, and this observation evidently proves that a te- 

 cundation really, takes place in mosses, a fact that cer- 

 tainly nowadays is doubted by no botanist There is a 

 very interesting ressemblance between the rocking motion 



Discelium 



by Thuret, into which the oosphsres of Fucus vesiculosus 



are brought. 



The above described fecundation was performed with as- 

 sistance of water and of a power of the archegones of atti-ac- 

 ting the antherozoides. The same two factors are probablj 

 active also at the fecundation of other "tosses and dicr are 

 no more required for the purpose, as well as itvvouldbe 

 difficult to show that any more factors are cooperating at the 

 fecundation. Wind and insects have no P^rt m he fecunda 

 tion of these plants. Besides it is quite ^^'^^1^^, ^^f* ^i^^^J',^ 



cundation of mosses with unisexual ^0^^^/^?,^;^^^;?^^^^^^^^^^ 

 in wet and not in dry weather. In drv weather the fecunda 



tion can't take place, because then the leaves rf the j)u^^ 

 like flowers are so tightly closed, that the anthe^ozoide^^ can 

 not come out of the masculine lowers nor ete the f^^ 

 minine flowers. Should the antherozoides e 'en come out, 

 they then would be dried and pme away IV^^yfjj^J'^'^^f^ 

 on the contrary, during and after rain ^J^^ when the de^^ls 

 abundant, the floral-leaves are distended the passae^ 



comes free to the antherozoides both ^%^^\f^" "J^^'^'^'owe ^^ 

 masculine flowers and for ente^nng ^.^ f^^i^^V^o^^*^'^- 

 Nor are then the antherozoides dried when s^^ arming. 



Hernoesund in Sweden, august 1875. 



H.-W. Arnell. 



BIBLIOGRAPHIE EXOTIQUE. 



Xes M^moires de la Soci6t6 de Phy-Ji^^f ^^^^^ ^I'sTsf 

 rellede Geneve renferment dans le tome XXR U 



tres-int6ressant article qui fait ^^^^^^^J^^^^X^.^es exoti- 

 d6ja publics dan. o.m^^^^^^^^^^^^^ Dnbv. ^ 



l^!i"°'^:l^t,?=tt?e laSelles foliaires et I'apophyse 



;apsulaire de plusieurs esp«ces 



capsulaire de plusieurs «ri^^^^" ,"" ° A.^ge les P. appressum. 



p ronvolutum Liim., r. contor- 



Hpe 



