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On Of DN 
15, 
‘AY: 
NortH AMERICAN SPECIES OF LESKEA 
Explanation of Plates 
PLATE 15 
Leskea arenicola 
. Plant, natural size. 
3. Outlines of stem-leaves. >< 44. 
5. Outlines of branch-leaves. < 44. 
Apex of stem-leaf. > 170. 
. Median cells of leaf. < 3c¢0 
. Cross-section of stem. 235. 
. Perichetial bud. 7%. 
. Inner perichetial bract. > 18. 
~ Capsule. « 9. 
. Peristome (annulus of three rows). > I00. 
“spores. >< 100. 
Leskea obscura 
. Plant, natural size. 
16, Outlines of stem-leaves. > 44. 
. Outlines of branch-leaves. >< 44. 
. Apex of stem-leaf. > 170. 
. Median cells from leaf. >< 390. 
. Cross-section of stem. < 235. 
22. Perichetial buds. 7%. 
. Inner perichetial bract. > 18. 
. Capsule. X 9. 
. Peristome (annulus for the most part of two rows). > 100. 
. Spores. > 100. 
- Longitudinal section through peristome. > 130. 
Leskea microcarpa 
. Plant, natural size. 
. Outline of stem-leaf. < 44. 
31, 32. Outlines of branch-leaves. > 44. 
. Apex of stem-leaf. >< 170. 
. Median cells of leaf. 390. 
. Cross-section of stem. < 235. 
. Perichetial bud. > 7%. 
. Inner perichetial bract. > 18. 
. Capsule. > 9. 
. Peristome (annulus for the most part of one row). X 100. 
. Spores. > 100, 
PLATE 16 
Leskea nervosa 
Plant, natural size, 
42, 43. Outlines of stem-leaves. > 44. 
44, 45. Outlines of branch-leaves. > 44. 
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