■ 12 - 
care it is not difficult to distinguish these five species, and, with the exception 
of L. Floerkii and'Z. lycopodioides , they show no tendency to vary into one 
another. L. gracilis is not uncommon in mountainous regions and is the 
smallest species of the group. It may usually be recognized at a glance by 
its upright flagelliform branches which bear gemmae near the apex and 
closely appressed leaves in the lower part. These branches, which are simi- 
lar in appearance to the gemmiparous branches of Odontoschisma denudation 
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 mar- 
ginal appendages of any sort near the postical bases of the leaves, while L. 
Floerkii and L. lycopodioides agree in having large and conspicuous bifid 
underleaves and in developing clusters of slender branched cilia near the pos- 
tical leaf-bases. L. barbata is rather more robust than L. Lyoni , but the 
most reliable differential characters are drawn from the leaves. In L. bar- 
bata these have their antical and postical margins of about the same length 
and approximately parallel, while the teeth at the truncate apex are three or 
four in nnmber, subequal in size and obtusely or subacutely pointed. If we 
should pass a straight line through these teeth, it would lie parallel 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 ori- 
ginal Jungerniannia 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 their is no doubt whatever. 
The differences between L. lycopodioides and L. Lloerkii are those of 
degree rather than kind. L. 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 underleaves 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 
species and which apparently represent intermediate forms. As has already 
been noted both species are almost universally recognized in spite of this 
fact.” Evans, Rhodora 4 : 210, 211, 1902. 
Figs. 12-16 Lophozia gracilis. 12. — Gemmiparous plant X 22. 13- 
Plant showing perianth X22. 14 — Plant, dorsal view X 22. 15 — Leaf, 
dorsal view X7o. 16 — Leaf cells X365. Drawn from 48 Hep. Bor. Am. New 
York Bot. Garden Herb., and from material collected by C. C. Haynes, Adir. 
Mts., May 31, 1904. 
Figs .17-19 Lophozia barbata. 17 — Plant showing perianth X22. 18 — 
Plant, ventral view X 22. 19 — Leaf cells X365. Drawn from material col- 
lected by Mrs. L. A. Carter at Laconia, N. H., May, 1905, and Mr. H. Dupret, 
near Montreal, Canada. New York City. 
(To t>e Continued) 
