184 Rhodora [JUNE 
published descriptions of the species in having the costa often dis- 
solving below the sulula and the teeth of the upper margins long, 
slender and prominent. Occasionally a single tooth reaches a length 
of .3 mm. or more. The lower leaves are about 2 x $ mm., the 
longer ones of the stem 4 X 1 mm., and the perichaetial 2 x $ mm. 
These measurements do not include the subula, which on the lower 
leaves is about 1 mm. long, becoming gradually longer on the succeed- 
ing leaves until on the inner perichaetial it reaches a length of about 
3 mm., and exceeds the lamina. Tab. LXII. B. fig. 1a. of Braith- 
waite's British Moss-flora would correctly represent the apex of these 
leaves if the costa dissolved about twice as far from the extreme apex 
as there figured. The only noticeable difference between the leaves 
of the Katahdin plants and authentic Scandinavian specimens is that 
the marginal teeth are usually somewhat longer in the former than in 
thelatter. Unfortunately only a few imperfect capsules were obtained. 
Tetrodontium Brownianum rigidum (Funck) Jur. (Zetraphis ovata 
Funck). Apparently not hitherto reported from North America. 
This appears to be identical with H. C. Funck's specimens distrib- 
uted in his * Cryptogamische Gewüchse des Fichtelgebirges " with 
which the Katahdin specimens have been compared at the Harvard 
Cryptogamic Herbarium. Limpricht (Die Laubmoose) regards this 
genus as composed of one species (Brownianum) and two varieties 
(repandum and rigidum). The species in its typical form, with the 
long frondiform basal leaves, has apparently not been reported from 
this country. The var. repandum (T. repandum Schwaegr.) has been 
recorded from the White Mt. region and Newfoundland, yet the writer 
has been unable to detect, with a strong hand lens, any of the charac- 
teristic flagelliform basal shoots on the New Hampshire specimens in 
the James Herbarium. It is quite possible that at least a portion of 
the White Mt. material may lack these shoots which form practically 
the only definite means of separating var. repandum from var. rigidum. 
Dr. Grout’s Z2trodontium, from Mt. Prospect, N. H., is apparently 
identical with the Katahdin plant; both have the very short frondi- 
form leaves, and both are without basal flagellae. Intergrading forms 
are reported from Europe which connect the species with its var. 
rigidum, and it would perhaps be better (following many authors) to 
treat the latter as a form rather than as a variety. 
