196 KANSAS ACADEMT OF SCIENCE. 



PLATE XXIX. 



(a) Cylindrothecium compressum B. & S., x 6. (b) Concave leaf from stem, 

 (c) Basilar cells, x 500. (d) Cells from upper part of leaf, x 500. (e) Dry cap- 

 sule, (f) A tooth of the peristome, (g) Spores, diameter equivalent to 9-13 

 mmm., x 500. (h) Perichaetial leaf, (i) Calyptra. 



PLATE XXX. 



(a) Hypnum porphorrhizum? Lindb., x 3. (b) Young capsule with calyp- 

 tra. (c) Capsule, (d) Dry capsule more magnified, with apiculate opercu- 

 lum, (e) Part of inner peristome, showing carinate segments and cilia 

 between, (f) Part of outer peristome, (g) Spores, diameter equivalent to 

 9 mmm. (h) Branch leaf, x 75. (i) Basilar cells, x 500. (j) Perichaetial leaf, x 

 70. (k) Cells of leaf, x 500. (1) Stem leaf, x 100. (m) Cells of stem leaf, x 500. 



PLATE XXXI. 



(a) Hypnum serpens Linn., x 2. (b) Part of branch, much enlarged, (c) 

 Stem leaf, (d) Cells of leaf, (e) Part of peristome and upper edge of capsule, 

 also part of annulus. (f) Spores, diameter 18 mmm., x 500. (g) Perichaetial 

 leaf. 



PLATE XXXII. 



(a) Hypnum laetum Brid., with mature fruit, (b) Peristome, inner and 

 outer, (c) Perichaetial leaf, (d) Stem leaf, (e) Operculum, (f) Spores, di- 

 ameter 14-18 mmm., x 500. (g) Hypnum hians Hedw., x 2. (h) Capsule, (i) 

 Calyptra. (j) Peristome, (k) Leaf. (1) Apex. 



