449 
are the specimens cited by Cardot under C Renauldi, and seem to 
prove conclusively that the two species are the same. 
The specimens collected by J. M. Holzinger on exposed sand 
bluffs at Winona, Minnesota, have been determined by M. Cardot 
as C. Renauldi, and by me as C. Rauz. We also have specimens 
collected by Mrs. T. A. Williams at Rapid City, South Dakota, 
which we have referred to this species. : 
The plate of C. Raui is taken from type specimens in Austin’s 
herbarium sent to him by E. A. Rau, collected by Brandegee. 
Description of Plate 248. 
I. Plants natural size; 2. one enlarged; 3. antheridial branch; 4. archegonia 
branch with the calyptra partially exserted; 5, 6,7. outlines of leaves; 8. antheridia 
and bracts; 9. basal half of leaf ; Io. apex, showing long rough awn; I1. calyptra; 
12. capsule with lid; 13. capsule without lid; 14. old capsule with fragments of 
teeth; 15. two teeth; 16. annulus $17. Spores. 
2. DICRANELLA HETEROMALLA AND ITS 
VARIETIES. 
(PLATE 249.) 
According to European authorities this is a very variable 
Species, several of its more striking varieties having received 
Names. The typical form seems to be according to Schimper 
and Limpricht, the one having the pedicels erect but more or less 
sinuous, Braithwaite, however, states that the pedicels may be 
curved, and Boulay says that owing to the variability of the flexion 
Of the pedicel at its summit the capsule assumes very diverse atti- 
tudes. 
Several of the European varieties have been recognized and 
distributed in American exsiccatae; but we have been surprised 
to find that even in this common species there still remain some 
Points to be cleared up, and possibly two allied species to be 
€rased from our lists. 
The common lowland form ranging along the Atlantic plain 
from Newfoundland to Florida, west to Dakota, which grows 
abundantly along sandy roads in dense cushions at the roots of 
trees and on dry banks, seems to be typical, having the seta erect, 
— flexuose and glossy yellow, agreeing with European specimens 
- and exsiccatae, It was distributed in Drummond’s Mosses, 2d 
