92 DICRANACE/E. 



Hab. Earth and rocks on mountains. Rare. 



All the above characters are more or less variable, and there is in fact' nothing to 

 distinguish C. Schimperi specifically from C. subulatus. The more robust habit and 

 radiculose stems are the best characteristics, but the latter is by no means constant. 

 Nor do I find that characters derived from the section of the nerve are of any more 

 value. I have seen no description of the fruit (which has only once been found) that 

 mentions the form of the seta. 



On the other side C. Schimperi very nearly approaches C. Schwarzii, but is of 

 smaller size, with less defined auricles. 



The fruit has only been once recorded, in the Austrian Tyrol. 



2. Campylopus Schwarzii Schp. (Tab. XXI. C.J. 



In dense, silky tufts, 2-4 inches high, bright or yellowish 

 green ; stems more robust than in the species hitherto described, 

 attenuated at the points, slightly radiculose. Leaves erecto- 

 patent, straight when dry or slightly bent at apex, gradually 

 narrowed with incurved margin from near the base, tubular, 

 larger and longer than in C. Schimperi, entire or with one or two 

 indistinct teeth at apex, not hyaline pointed. Nerve very broad, 

 %-U width of leaf at base, in section of 3-4 layers of cells, 

 resembling those of the last species, grooved at back above ; 

 auricles distinct, slightly dilated, hyaline or red ; cells of the 

 leaf-base narrowly rectangular, very narrow at margin, above 

 smaller, narrowly rectangular or subquadrate-elliptical. Fruit 

 unknown. 



Hab. Alpine rocks ; not common. 



It is very difficult, if not impossible, to point out any important structural 

 character in which this species differs from C. Schimperi, although its size and habit 

 preclude any great difficulty in distinguishing it from that plant. The presence of 

 distinct auricles, slightly wider than the rest of the leaf-base, is the feature commonly 

 relied on ; but forms of C. Schimperi show a distinct approach to this structure, 

 although in a minor degree. The grooving of the nerve at back might also be pointed 

 to, but this feature also exists in some forms at least of the other plant, which Braith- 

 waite indeed describes as having the posterior cells of the nerve turgid and prominent. 

 From the next species it differs in the much shorter leaf and leaf-base, with the nerve 

 occupying a greater proportion of the width, and with shorter, almost perfectly entire 

 points, and in the usually more attenuated, slender plants with more distant leaves. 



3. Campylopus Shawii Wils. (Tab. XVI. D.). 



In tall, dense, slightly radiculose tufts, 2-4 inches high, 

 yellowish green or brown, dark brown below ; plants robust, not 

 much attenuated above, the leaves closely set, erecto-patent or 

 spreading and recurved-falcate, slightly flexuose when dry, larger 

 and longer than in C. Schwarzii, from a much longer leaf-base, 

 quickly contracted to a longer, much narrower, setaceous but not 

 hyaline point, distinctly denticulate at apex, with often a few 



