BRITISH MOSSES. 29 



In the following table, which is far from exhaustive, I 

 have endeavoured to exhibit some of the modes of repro- 

 duction, dividing them into those cases in which it takes 

 place with protonema and those cases in which it takes 

 place without. 



TABLE C. MODES OF EEPRODUCTION. 



A. With Protonema. 



i. Spores in capsule. 



( Leptodontium gemmascens. 



ii. Gemmae on end of leaf 1 Orthotrichum phyllanthum. 



(.fifrimmia Hartmani. 



on midrib Tortula papillosa. 



in axils of leaves ... Bryum. 



in balls Aulacomnion. 



in cups Tetraphis. 



in. Protonema ... from zhizoids {^Surn. 



from aerial rhizoids... Dicranum undulatum. 



from terminal leaves. OncopTiorm glaucus. 



from base of leaf ... F unaria hygrometrica. 



from midrib Orthotrichum Lyelli. 



from margin Buxbaumia aphylla. 



from stems Dicranum undulatum. 



from calyptra Conomitrium jiilianum. 



B. Without Proionema. 



iv. Leaf-Buds ... on rhizoids Grimmia pulviiiata. 



v. Leaf-Buds ... on aerial rhizoids ... Dicranum undulatum. 



vi. Bulbs on stem Bryum annotinum. 



vii. Young Plants, at ends of branches ... Spnagnum cuspidatum. 



viii. LeafvBranche, becoming detached ^{WSS&S^ 



vt. Booting of main ^ ,, . 



g^jg t Jtfmum undulatum. 



Weismanris Theory. The consideration of this table, and 

 of the facts which are epitomized in it, is not without its 

 interest in reference to Prof. Weismann's theory of the 

 division of the cells and the plasma of organisms into two 

 kinds : the germ cells and germ plasma endowed with a 

 natural immortality, and the somatic cells and somatic 

 plasma possessing no such endowment. That the Mosses 

 are a difficulty in the acceptance of the theory as a universal 



