16 `- Rhodora [JANUARY 
In commenting upon the type-material of this species the writer ! 
called attention to the fact that it consisted of an admixture composed 
of a pale plant with gemmae and a more or less pigmented plant with- 
out gemmae. It was recommended that the pale material, from which 
the original description was evidently largely drawn, should be con- 
sidered the actual type of the species. With regard to the pigmented 
material judgment was withheld, although the possibility was sug- 
gested that it might perhaps represent a divergent form of O. Macounii. 
It now appears, as noted above, that this pigmented material repre- 
sents 0. elongatum. The species agrees with O. Macounii in its con- 
cave leaves and relatively large underleaves. Its leaves, however, 
are less densely imbricated, the leaf-cells have smaller trigones, the 
slime papillae on the surface of the underleaves are more numerous, 
the gemmiparous shoots are shorter, their leaves are smaller, and the 
gemmae themselves have thinner walls. In O. denudatum, which 
also is closely related, the plants are somewhat more robust than in 
O. elongatum, and the plants are frequently pigmented with reddish, 
a type of coloration which the new species apparently never shows. 
O. denudatum is further distinguished by its smaller underleaves (on 
shoots with normal leaves), by the absence of surface papillae, and 
by the more acuminate divisions of the perichaetial bracts. The leaf- 
cells are much the same in the two species, and the similarity in the 
gemmiparous shoots has already been mentioned. 
8. ANTHOCEROS CRISPULUS (Mont.) Douin, Rev. Bryol. 32: 
27. f. 1-15. 1905. A. punctatus, B. multifidus Nees, Naturgeschichte 
der europ. Lebermoose 4: 340. 1838. A. punctatus, a. crispulus 
Mont.; Webb & Berthelot, Hist. Ins. Canar. Bot. 2': 64. 1840. On 
moist earth along roadsides. Andover and West Hartford, Connecti- 
cut (Miss Lorenz, 1911). Not before recorded from North America. 
Although A. crispulus was included by Nees von Esenbeck among 
the varieties of 4. punctatus L., he recognized some of its most import- 
ant characteristics and intimated that it might perhaps represent a 
distinct species. Douin, however, was apparently the first one to 
raise it definitely to specific rank. His description and figures were 
drawn from specimens collected in the department of Eure-et-Loir, in 
France, and the species has since been reported by C. Müller ? from 
various scattered localities in Germany. It will probably be found 
1 Bot. Gaz. 36: 321. 1903. 
? Beih. zum Bot. Centralbl. 222: 253. 1907. 
