PLAGIOCHILA. 21o 



Fruits April, May. 



Dimensions. — Stems from 1 to G inches loi'g, diaiii. 75 mm., 

 with leaves 8* mm, broad; leaves 4* mm. x 3" mm., "35 mm. x 

 "275 mm. ; teeth of leaves "5 mm. ; cells "04 mm. ; bracts 4*5 mm. 

 X 3" mm. ; perianth 7' mm. long- x 375 mm. wide at the moutli ; 

 teeth at mouth of perianth "1 ram. ; elaters "15 mm. long x 

 "01mm. wide; spores "0175 mm.; perigonial bracts 15 mm. x 

 r mm.; antheridia '3 mm. x '225 mm. 



Hab. - — Growing in dense patches on rocks or creeping aerially 

 amongst the larger mosses in shady places. 



Common. 1-18. I. 



Found on the Continent and in North America. 



Obs. — The large aerial Ibrm, almost tropical in some of its 

 forms, and which rarely fruits, is remarkably different in habit 

 from the smaller and fertile form, which grows usually in dense 

 patches on damp rocks, but a close microscopic examination 

 reveals no permanent character which can be relied upon ; the 

 leaves differ in shape, the margin of both forms vary, from being 

 entire to ciliate-dentate. 



According to original specimens, Pla(jiochUa DiUciiii, Tayl. is 

 the small form. 



Description of Plate CXIII. — Fig. 1. Plant natural size. 



2. Portion of stem x 11, antical view (Carr. & Pears. 87). 



3. Perianth and bract x 11 (Baden, Jack). 4. Portion of mouth 

 of perianth x 85 (ditto). 



Description of Plate CXIV. — Fig. 1. Plants natural size 

 (var. Dillenii, Tayl,). 2. Portion of stem of type x 11, postical 

 view (Carr. & Pears. 87). 3, Portion of margin of leaf x 85 

 (ditto). 4. Portion of leaf x 290 (ditto). 5. Perigonial bract 

 X 16 (G. & E. G20). G, Antheridium x 24 (ditto). 



3. Plagiochila ambagiosa, Miften. 



riagiochila avibagiosa, Mitten, Trans. Linn. Hoc. vol. iii. p. lO.'J (ISDl) ; Stcpli. 

 Bull, de 1. Herb. Boissier, vol. v. p. S8 (18!)7). 



Dioicous, ctespitose, medium size, of a yellowish-brown 

 colour. Stems arising irom a creeping or procumbent rhizome 



