186 KANSAS ACADEMY OF SCIENCE. 



PLATE IX. 



(a) Barbula unguiculata Hedw., x 15. (b) Dry plant of same, showing the 

 twisted leaves, seta, and peristome, also the projecting columella, x 15. (c) 

 Stem leaf, x 100. (d) Basal cells, x 200. (e) Apical cells, showing the pa- 

 pillae, X 200. (f) Cucullate calyptra. (g) Operculum, (h) Partly twisted 

 teeth, showing the papillae, x 100. (i) Perichaetial leaf, x 60. (j) Basal cells, 

 (k) Inner perichaetial leaf. (1) Spores, diameter equivalent to 9-11 mmm., 

 X 200. 



PLATE X. 



(a) Ptychomitrium incurvum Sulliv., x 10, from New York, (b) Comal 

 leaf, X 100. (c) Basal leaf, x 100. (d) Basal leaf, x 500. (e) Upper cells, (f) 

 Part of the peristome and upper edge of the capsule, teeth bifid and densely 

 papillose, x 200. (g) Part of the annulus, x 200. (h) Operculum, (i) Calyptra. 

 (j) Spores, diameter equivalent to 9-12 mmm., x 500. 



PLATE XI. 



(a) Orthotrichum cupulatum Hoff., var. minus Sulliv., x 20. (b) The hairy 

 calyptra. (c) Moist capsule, showing colored stripes and incurved peristome, 

 (d) Dry capsule, showing recurved peristome, (e) Operculum, (f) Spores, 

 diameter equivalent to 10-14 m., x 500. (g) Part of capsule, showing the 

 square cells and one of the bifid teeth, (h) Enlarged leaf showing areolation. 

 (i) Border cells, (j) Apical cells, (k) Stomata of capsule. 



PLATE XII. 



(a) Physcomitrium Kellermanii Mrs. Britton, x 1. (b) Plant of Physcomi- 

 trium pyriforme Brid., x 15. (c) Young capsule, (d) Cucullate calyptra. (e) 

 Operculum, (f) Papillose spores, diameter equivalent to 25-30 mmm. (g) Co- 

 mal leaf, (h) Basal cells, (i) Upper" cells, showing chlorophyllose grains, (j) 

 Cells of edge near apex of leaf, (k) Dry capsule. (1) Plant of Physcomitrium 

 Hookeri Hampe, x 10. (m) A portion of the compound annulus and upper edge 

 of capsule, showing the transversely elongated cells, (n) Papillose spores, 

 diameter equivalent to 18-23 mmm. (o) Leaf, x 20. (p) Basal cells, (q) Apex 

 of leaf, (r) Male plant, with the blossom. 



