513 



Lythe heck. The existence of this plant in Britain was foimerly donhted ; Sir 

 W. J. Hooker says — " I have never seen British specimens ; and I suspect the 

 authors just named (Hudson, Withering, &c.) may have mistaken some other 

 species for it ; " (see Brit. Jung, and Eng. Flor.) I helieve its claim to a place 

 in our Flora was satisfactorily established a few years ago by Mr. Jenner, who 

 found it at Tonbridge Wells. Its closest affinity may be with J. pumila, but in 

 my deliberate opinion J. polyanthos is the species for which it is most likely to 

 be passed over; I found the two plants growing intermixed, and certainly differ- 

 ing very little in size and general appearance. In J. lanceolata the stems are 

 procumbent, and copiously furnished with strong radicles on their under side. 

 The leaves are horizontal, but slightly deflexed (except the two or three terminal 

 ones, which are vertically folded together, as we sometimes see the leaflets in le- 

 guminous plants), longer than broad by about one half, and of nearly equal 

 breadth from the base to near the summit, where they are rounded ofi", or rarely 

 somewhat retuse ; their colour brownish. The calyx is terminal, one third longer 

 than the perichaetial leaves, curved upwards, subcylindrical, broadest at the sum- 

 mit, where it is remarkably depressed, with a very minute slightly elevated mouth. 

 Jung, polyanthos is altogether of a greener hue ; the stem is more slender ; the 

 leaves mostly shorter, still more quadrate in their form, and often emarginate, 

 the reticulation is also closer. Besides these marks of distinction, there are the 

 more important ones of the presence of stipules (though unusually small in pro- 

 portion to the leaves), and the curious two-lipped calyx with its much exserted 

 calyptra, which will always suffice to keep this species far apart from J. lanceo- 

 lata. The plant mentioned in my list of Wharfedale mosses (Phytol, 197) as an 

 entire-leaved variety of J. aspleuioides,* is not unlike J. lanceolata in appear- 

 ance, but the calyx is totally different. 



Jun{jermannia riparia, Taylor, MS. On wet rocks by the Esk; with calyces. This 

 species, which has very lately been distinguished by Dr. Taylor, was first de- 

 tected by him at the Dargle, Co. Wicklow ; and I had the pleasure of gathering 

 it in his company last July, at Blackwater Bridge, Co. Kerry. It is inteniie- 

 diate in size between J. cordifolia and J. pumila, and has some points of resem- 

 blance to each, but difi'ers from both in its obovate very obtuse calyx. I have 

 gathered it in two other Yorkshire stations, namely, Wharfedale and Crambeck 

 on the Derwent, and Mr. Nowell sends it from Todmorden. 



" sphcerocaiya. Abundant, but sparingly in fruit. I observe that the 



young calyx has a short tubular mouth, without any trace of teeth. 



hyalina. Equally common with the last, and growing intermixed with 



it, but distinguished by its larger size and purplish tinge, by the broader and 

 more wavy leaves, by the vertically compressed and angulate calyx, and, above 

 all, by the perichaetial leaves growing upon, or adhering to, the calyx. 

 emarginata. Eskdale and Newtondale. I found a few capsuliferous 



specimens. 

 inflata and excisa. With calyces on Egton moors. A small variety of 



the latter in Newtondale, with nearly all the leaves trifid. 



bicuspidata, nemorosa and albicans. With calyces. 



umbrosa. Newtondale and woods round Grosmont bridge. This beau- 



* Mr. Wilson considers this to be a distinct and undescribed species. 



