THE BRYOLOGIST. 
Vol. VIII. July, 1905. No. 4. 
DIAGNOSTIC CHARACTERS IN THE JUNGERMANNIACEAE. 
Alexander W. Evans. 
[Read at the meeting of the Sullivant Moss Chapter at Philadelphia, Pa., Dec. 31, 1904.] 
If one were asked to describe in a few words the general characteristics 
of the mosses the task would be comparatively easy, at least so far as the 
gametophyte is concerned. Throughout the entire group this consists of a 
leafy stem, and the leaves although exhibiting considerable diversity in 
form, in texture and in the peculiarities of the margin, are never deeply 
Explanation of Plate V. 
Fig. 1. Kantia Trichomanis, from above. Fig. 2. The same, from 
below. Fig. 3. Odontoschisma prostratum , from above. Fig. 4. Plagio- 
chila asplenoides , from above. Fig. 5. Diagram to illustrate the attach- 
ment of succubous leaves, the dotted lines representing the lines of 
attachment and the arrow the direction of growth. Fig. 6. Diagram to rep- 
resent the attachment of incubous leaves. Fig. 7. Cephalozia connivens, 
from above. Fig. 8. Lophocolea bidentata , from below. Fig. 9. Kantia 
Sullivantii , from above Fig. 10. Bazzania trilobata , from above. Fig. 
11. Lepidozia reptans, from below. Fig. 12. Marsupella emarginata , 
from above. Fig. 13. Architejeunea clypeata , from below. Fig. 14. 
Frul lania Brittoniae , from below. Fig. 15. P or el la platyphylla, from 
below. Fig. 16. Diplophylleia apiculata, from above. Fig. 17. Diagram 
to illustrate the attachment of complicate leaves which are neither incubous 
nor succubous. Fig. 18. Diagram to illustrate the attachment of compli- 
cate and incubous leaves. Fig. 19. Diagram to illustrate the attachment of 
complicate and succubous leaves. Fig. 20. Harpanthus scuiatus, underleaf. 
Fig. 21. Lophozia bar bat a, underleaf (after Warnstorf) ; bifid underleaves 
also occur in this species. Fig. 22. Cephalozia connivens , bract. Fig. 23 
Frullania Brittoniae , bract. Fig 24. Diagram representing a radial sec- 
tion through an archegonial branch and young sporophyte in the genus 
Lophocolea-. S. sporophyte; Cal. calyptra; Per. perianth; Br. bract. Fig. 
25. Diagram representing a cross-section of the perianth in the same genus, 
i. e., an epigonianthous perianth. Fig. 26. Diagram representing a cross- 
section of the perianth in the genus P lagiochilci. Fig. 27. Diagram repre- 
senting a cross-section of the perianth in the genus Cephalozia , i. e. a 
hypogonianthous perianth. Fig. 28. Diagram representing a cross-section 
of the perianth in the genus Scapania. Fig. 29. Diagram representing a 
radial section through an archegonial branch and young sporophyte in the 
genus Marsupella-. Pg. perigynium; other references as in Fig. 24. Fig. 30. 
Diagram representing a radial section through the pendent perigynium and 
young sporophyte in the genus Kantia. 
The May Bryologist was issued May 1st, 1905. 
