1902J Evans, — Notes on New England Hepaticae 211 



branches of Odontoschisma denudatum and Kantia Trichomanis are 

 sometimes very abundant, covering over an entire tuft of the plant, but 

 sometimes they are very sparingly produced. 



Of the other four species L. barbata and L. Lyoni agree with each 

 other in having inconspicuous or obsolete underleaves and in lacking 

 marginal appendages of any sort near the postical bases of the leaves, 

 while Z. Floerkii and L. lycopodioides agree in having large and 

 conspicuous bifid underleaves and in developing clusters of slender 

 branched cilia near the postical leaf-bases. L. barbata is rather 

 more robust than L. Lyoni, but the most reliable differential charac- 

 ters are drawn from the leaves. In Z. barbata these have their 

 antical and postical margins of about the same length and approxi- 

 mately parallel, while the teeth at the truncate apex are three or four 

 in number, subequal in size and obtusely or subacutely pointed. If 

 we should pass a straight line through these teeth, it would lie par- 

 allel or nearly so with the axis of the stem. In the leaves of L. Lyoni 

 the postical margin is strongly curved and is much longer than the 

 antical, the sharply pointed teeth are commonly three in number and 

 the postical tooth is considerably larger than the others. If we 

 should pass a straight line through these teeth, it would form an 

 acute angle with the axis. Lophozia Lyoni is commonly known as 

 L. quinquedentata, but there is so much doubt as to what the original 

 Jungcrmannia quinquedentata really was that it seems best to discard 

 the name altogether, as both Pearson and Stephani have recently 

 done, and to take up the later name of Taylor, about which there 

 is no doubt whatever. 



The differences between L, lycopodioides and Z. Floerkii are those 

 of degree rather than of kind. Z. lycopodioides is the more robust 

 of the two, its leaves are larger and more crispate, the teeth are often 

 mucronate instead of being bluntly pointed, the basal cilia are more 

 abundant and more finely divided and the divisions of the under- 

 leaves are more conspicuously ciliate. Typical specimens can be 

 distinguished from each other at a glance, but one occasionally 

 meets with forms which are difficult to refer definitely to either spe- 

 cies and which apparently represent intermediate forms. As has 

 already been noted both species are almost universally recognized in 

 spite of this fact. 



10. LbpHOZiA Marchica (Nees) Steph. Bull, de l'Herb. Boissier, 

 II. 2 : 48. 1902. Stephani has recently reduced to this species, as 



