462 HEPATIC^. 



Elaters brown, unispiral. Aiidroecia proceeding from the mid- 

 rib on the postical side of frond ; bracts ventricose, beset with 

 numerous short hairs, enclosing 2-4 roundish antheridia, which 

 are very shortly stipitate. Gemmiparous ; gemmae terminal on 

 attenuated branches, discoid, oval or roundish, furnished later 

 with hairs, 



Var. ani(/inosa. Hook. Minute, of a blue colour, changing to 

 green. No other good characters are to be observed. 



Dimensions. — Fronds ^ to J inch long, '5 mm.-l" mm broad; 

 cells "035 mm. --05 mm. 



Hab. — On trunks of trees, stones and rocks, in exposed or 

 shady situations. 



Moderately common. 



1 to 17. I. 



Europe, Africa, North and South America, Australasia. 



Obs. — The species belonging to this genus are easily recognised, 

 even in their barren state, by their thin fronds with prominent 

 midrib, which projects on the postical side, and the presence of 

 long white hairs on their surface. 



The two good species separated from M. furcafa by the late 

 Prof Lindberg are at once identified by the characters given with 

 each species. 



Description of Plate CCVI. — Fig. 1. Plants nat. size (Eng. 

 Bot. 1632). 2. Plant x (ditto). 3. Portion of frond, postical 

 view ? X (Hooker). 4. Ditto $ (ditto). 5. Portion of frond 

 X 60 (Elfving). 6. Cross-section of portion of frond x GO 

 (ditto). 7. Calyptra x (Hooker). 8. Spores and elaters x 

 (ditto). 



