104 
BUXBAUMIA IN THE UNITED STATES. 
There are without doubt, three good species of Buxbaumia 
in this country. , B. indusiata Brid., with two-celled super- 
ficial stomata, and two, B. aphylla L. an Piperi Best, with 
one-celled, immersed stomata. -The t mer 0 
is probably confined to the East and cy to the V est 
side of the Rocky mountains in Montana, This last ne is 
in aphylla. It is distinguished (aA this latter at on y the 
color of the capsule, by its being less depressed, ae more 
pointed above and less obliquely set on the seta. The spores 
also. are larger. I find them up to .o12 mm. or more. In 
aphylla they ane run from .005 mm. to .oo8 mm. I fail to 
find that any of these species have more than one well-developed 
row of teeth to the outer etal with Peeters a more or 
less poorly developed secondar me European ma- 
terial, called B. zxduszata, Knaly aie at my disposal by Mrs, 
Britton, the peristome is the same as in our American specimens. 
e pseudo-annulus consists of several thicknesses of cells, 
loosely cohering, ae gradually ie in num above, 
that may extend only a short distance above the mou a of the 
capsule or nearly aon up the height of the peristome. 
. aphylla grows on decayed wood in the Hemlock Grove, 
and is one of the most interesting mosses found in the Garden. 
S. WIxiiaMs. 
NOTES, NEWS AND COMMENT. 
American Association for the Advancement of Science.—The 
Section of Botany of the American Association for the Advance- 
ment of Science met in the Museum Lecture Hall on the morn- 
