124 
BIBLIOGRAPHY. 
viouslj been described as fungi, as Chondromyces (B. & C.), etc. 
A remarkable feature of the order is the close superficial resem- 
blance of the organisms to those of the Myxomycetes. 
The order includes nine species and three genera. Polycephalum 
aurantiacum (Kalchbr. and Cooke), and Stilbum rhytidospora (B. 
& Br.), are given as synonyms — with a query — under Chondro- 
myces aurantiacus (B. & C.), Thax. This idea, an examination 
of the types of these species proves to be correct. 
MUSCINEiE. 
Two New American Mosses. G. N. Best (Bull. Torr. Bot. 
Club, Vol. xx., p. 116, 1892.) — Buxbaumia Piperi (Best). On 
rotten wood, or on ground covered with woody debris, in moun- 
tainous regions. This species is said to be “ intermediate between 
B. aphylla and B. indusiata. The shorter and the more curved 
pedicel, the more erect capsule, not markedly depressed nor strongly 
margined, peristome of a single well- developed layer, spores 
larger, readily separate it from the former. The more symmetrical 
capsule, peristome of four layers, the outer successively shorter, 
of B. indusiata mark it as distinct from the latter. In B. aphylla 
the operculum is usually thimble-shaped, the peristome rudimen- 
tary/’ The second new species, Ditrichum ambiguum (Best), is 
said to be most closely allied to D. tenuifolium (Schrad.), Lindb. 
Two New Species of Mosses from Idaho. J. B. Leiberg 
(Bull. Torrey Bot. Club, Yol. xx., p. 112, 1893, 2 pi.). — The 
two new North American species are Ditrichum montanum and 
Grimmia pachyphylla. Concerning the last, the author says, “ A 
fine form of the Bhabdogrimmia section, most nearly related to 
Grimmia decipiens (Schultz.), Lind., from which species it differs 
mainly in its dioicous inflorescence, its open leaf base, smoother 
hairy point, its broader basilar, its shorter medial, and its quad- 
rate-apical areolation, its pluri-stratose nerve, the longer beak of 
its lid, its narrow and persistent annulus, and the peristome in- 
curved when dry.” 
ERBATA. 
P. 52, 17 lines from bottom, for Porf. read Prof. 
„ 57, 18 „ „ „ for tenaculoids read tentaculoids. 
„61, 7 lines from top, for longuis read longius. 
