oS ae 
\ > ees Sapa ea i. 7 ( ed 2-— 
rooting at base of the innovations ; leaves crowded, 
63 
ro. Spore. 
11. Same much enlarged, snowing the spines, 
12. ‘Stoma, enlarged, showing the overlapping cells, 
13. Calyptra. 
Description of Plate 230, Aphanorhegma serrata Sull, 
- Plants, natural size. 
. Same, enlarged. 
. Outlines of leaves. 
- Cells at base of one side of leaf. 
- Cells of the apex. 
. Perichaetial leaves removed, showing the antheridia mixed with the arche- 
gonia in the upper ax:ls, 
6-7, Distinct antheridial clusters. 
8. One of the globose-tipped paraphyses. 
9. Leaves removed, showing the subapical innovations of the stems and the 
Aw Bw dn 
nearly sessile capsules, } wt ety 
To. Single capsule enlarged, showing median dehiscence and flaring rim. 
II. Spores, one enlarged, showing spines. 
12. Collenchyma cells below the mouth showing the thickened walls. 
13. Cells of lid. 
14. Two stomata enlarged. 
15. Calyptra. 
2. On A Hysprip GROWING WITH APHANORHEGMA SERRATA Sull. 
(PLATE 231.) . 
These specimens were distributed in Drummond’s mosses of 
the Southern States (1841) as No. 20, labelled as follows: 
Schistidium Serratum, Nov, Sp. eee 
‘e ids . . a. 
Foliis obovatis acuminatis sub apicum serratis, capsula hemisphaeric 
Near St. Louis, growing with Phascum serratum. 
In the set belonging to the Columbia College Herbarium, there 
is an unmistakable “hybrid between Aphanorhegma serrata and an 
unknown Physcomitrium, probably P. turbinatum, though, of course, 
the hybrid is not characteristic, as the archegonial om = 
Aphanorhegma, and the antheridial plant was not distributed an 
could not be as easily determined. oe 
Aphanorhegma po @ X Physcomitrium aes sagt $ (?). : 
Schistidium serratum Hook. & Wilson in Drummond's Sout 
€rn Mosses no. 20 (1841). 
Plants 3-5 mm. high, gregarious, bushy ; stems b 
s 
ranching and 
3 mm. long, 
oe re ee i serrate 
lanceolate or oblanceolate, from an oblong base, margins 
