56 Rhodora [MARCH. 
My collection of M. lateriflora comprises only 5 numbers as follows: 
1 from Cambridge, Massachusetts and 1 from Iowa, both with long 
stamens, and 3 from Spokane Co., Washington, one of these is pistil- 
late, the other two consist of both sexes on different stems. In one 
long-stamened flower there is a capsule not very small, but it seems to 
be seedless.— To me it seems fairly certain that these two species 
are dioecious or nearly so. "There may be a third form having long 
stamens and also producing seeds, but that is still doubtful. Fur- 
ther observations at many different places may perhaps be needed to 
settle this point. 
BINGEN, WASHINGTON. 
A CUT-LEAVED ALDER.— On the edge of a wet thicket at Norris 
Arm, at the mouth of the Exploits River in Newfoundland, there 
occurs a large clump of the common swamp Alder, Alnus incana (L.) 
Moench, with the leaves deeply pinnatifid. When the plant was first 
examined it was taken to be the shrub known in cultivation as A. 
incana, var. pinnatifida Wahlenb., but closer study shows that it 
cannot be placed with var. pinnatifida, for that shrub, known in the 
wild state only in Sweden, has the leaves densely pubescent beneath 
(see Callier in Schneider, Handb. der Laubholzk. i. 136). The New- 
foundland shrub is clearly an extreme of the common American 4. 
incana, var. glauca Ait., differing, like var. glauca, from typical A. 
incana of Europe, in having the leaves very glaucous beneath and 
quickly glabrate except on the veins. It should be called 
ALNUS INCANA (L.) Moench, var. GrAUCA Ait., forma tomophylla, 
n. f., foliis elongatis irregulariter. laciniato-pinnatifidis.— Leaves 
elongate, irregularly laciniate-pinnatifid.— NEWFOUNDLAND: border 
of a wet thicket, Norris Arm, August 21, 1911, Fernald & Wiegand, 
no. 5303 (TYPE in herb. Gray). A somewhat similar but less charac- 
teristic specimen from Marne: Hartford, August, 1892, J. C. Parlin.— 
M. L. FERNALD, Gray Herbarium. 
Vol. 16, no. 182, including pages 21 to 44 and plates 107 and 108, was issued 2 
February, 1914. 
