1913] Fernald and Wiegand,— Empetrum in North America 215 
herb. Phil. Acad.; Moat Mountain, Conway, July 28, 1879, W. C. 
Lane; disintegrated granite, top of Mt. Chocorua, Sept. 7, 1855, 
W. Boott, August 20, 1898, C. A. Weatherby, September 10, 1910, 
F. T. Lewis. Vermont: Mt. Mansfield, June 5, 1877, C. G. Pringle 
in U. S. Nat. Herb. (a possible confusion since the plant seems not to 
have been collected by others on Mt. Mansfield, where E. nigrum 
occurs, and the label accompanying the specimen is not an original 
one).— Sterile specimens from Passage Island, Lake Superior (W. S. 
Cooper, no. 107) may belong here. 
E. atropurpureum, heretofore taken to be DeCandolle’s E. nigrum, 
var. andinum of Chili, proves, throughout its known range in northern 
New England and the islands of the Gulf of St. Lawrence, to be a 
constant plant with closely trailing white-tomentose branchlets and 
it cannot, therefore, be longer maintained as identical with E. nigrum, 
var. andinum, for that little-known plant, though having red berries, 
is described by DeCandolle as having * Ramuli et folia glabriuscula." 
As already pointed out by Knowlton,' in Maine E. nigrum " grows best 
in peat-moss, and the prostrate habit is not particularly prominent, 
as most of the branchlets are suberect"; while the very trailing E. 
atropurpureum “prefers as a soil the gravel formed by the decomposi- 
tion of coarse granite, usually containing very little vegetable matter." 
Similarly, on Prince Edward Island and the Magdalen Islands, where 
E. nigrum is chiefly a plant of the bogs and the humus of headlands, 
E. atropurpureum carpets the open sand hills. In Maine and New 
Hampshire E. nigrum is a plant of the bleak eastern coast (from 
Penobscot Bay eastward) and the highest alpine districts; .K. atro- 
purpureum, on the contrary, grows chiefly near timber-line or slightly 
above it or upon the summits and slopes of the lesser mountains. 
3. E. Eamesii, n. sp., fruticulus ramulis arcte prostratis junioribus 
albido-tomentosis; folis coarctatis adscendentibus plus minusve 
imbricatis deinde paullo patentibus haud reflexis elliptico- vel spathu- 
lato-oblongis ad oblongo-linearibus valde coreaceis nitidis apice 
rotundatis, eis ramulorum vegetorum laminis 2.44 mm. longis; baccis 
3-5 mm. diametro roseis vel pallide rubris, pelli tenui translucenti, 
pulpa aquosa propre ecolorata; seminibus 1.2-1.5 mm. longis. 
Shrub with closely prostrate branchlets, the young ones white- 
tomentose: leaves crowded, ascending and more or less overlapping, 
in age slightly spreading, elliptic- or spatulate-oblong to oblong-linear, 
very coriaceous and lustrous, round-tipped; the blades of the leading 
shoots 2.5-4 mm. long: berries 3-5 mm. in diameter, pink or light red, 
with thin translucent skin and watery nearly colorless pulp: seeds 1.2- 
1 C. H. Knowlton, Ruopona, iv. 196 (1902). 
