72 BRITISH HEPATIC^. 



Ferigonial le(wes (f. 29, 1, 2) ovate-acute, boat-shaped, erecto-r 

 patent, more rarely orbiculate, with the base ventricose. 



Antheridia geminate, spherical, shortly stipitate, greyish-green. 



Gemmce, of a pale-green or yellowish colour, abundant, espe- 

 cially in the spring and autumn, forming roundish balls on the ter- 

 minal leaves, and more distantly scattered over the margins of the 

 lower ^nes. In form the cells are oval (f. 29, 4) or angular, either 

 simple or 2-3-septate. When detached, the border of the infested 

 leaf appears erose-dentate. 



To tke Rev. R. B. Francis belongs the honour of first detecting the distinctive 

 characters of M. anomala, although Dillenius must have been acquainted with it, since 

 a shoot is figured in the Hist. Mime, PI. 69, fig. 1, I., along with Nmrdia compressa, 

 &c., which sometimes grows along with it, but may be distinguished by the compressed 

 sub-reniform leaves, the absence of radicles on the stems, and the different structure of 

 the involucre. 



Although abundant on the Continent, it was long confounded with Jung, lanoeo- 

 lata, as in Mart. Fl. Erl. t. 6, f 57 ; but in that species the leaves are horizontally 

 disposed, amphigastria are wanting, and the colesule is cylindrical throughout, the 

 mouth being curiously contracted and umbilicate. 



In many respects J. Schraderi is a still nearer ally, but differs in its smaller, size, 

 the uniformly ovate, sub-secund leaves, more delicate and minute areolse, and cylin- 

 " drical colesule. In specimens of this rare species, recently collected at Barrow Field, 

 Westmoreland, some of the colesules appeared compressed at the summit, and I was 

 doubtful whether to include J. Schraderi under Mylia ; but my friend Mr. Q. Stabler 

 informs me that in a recent state they are always cylindrical. 



By the exercise of a little care, -there can be no diflEculty in discriminating 

 between M. Taylori and other round-leaved species. The purple variety of Nardia 

 [Eucalyx) hyalina seldom exceeds an inch in height, and the rootlets are purple, not 

 white. 



Professor Lindberg has recently published a remarkable addition to this genus, 

 the Mylia verrucosa, Lindb.'"(Musci Sachalin, 1872), in which the, leaves are densely 

 veiTuculose, and the lower half of the colesule clothed with conical hairs, not unlike 

 those of Lophocolea muricata, N. ab E. 



Pl. IX. Fig. 29. — Mylia anomala. 1. Apex of shoot, ivith perigonial leaves. 



2. Shoot in which the leaves are more obtuse x 8. 3. Leaf from the lower portion of 

 the stem. i. Part of the apex of a leaf, showing the gemmce. 5. Leaf-cells X 250, 

 showing the lenticular granular bodies. {The two latter figures cvre coined from a 

 drawing by Dr. Gottsclie.) 



Fig. 30. — M. Taylori. 1. Shoots natural size. 2. Apex of fertile shoot x 8. 



3. Sub-involucral leaf x 16. 4. Leaf-cells, left-hand figun-e x 250. 5. Amphigastria. 

 6. Involucral leaves and colesule — on one side the innovant bud is seen. 7. Colesule x 16. 

 8. Section of colesule — a from upper third, hfrom lower third (after Gottsche). 



