1903] Fernald, — Andromeda Polifolia and A. glaucophylla 69 
Aiton’s variety a, Jatifolia, from North America, with spreading 
white calyx-lobes is undoubtedly the common plant of our northern 
bogs; his var. fj, media, is the common A. Polifolia of northern 
Europe; but his var. y, angustifolia, from Newfoundland and Labra- 
dor, is slightly problematic. The character “laciniis calycinis 
oblongis rubris" agrees well with a dwarf form of the true 4. Foii- 
folia known from Hebron, Labrador, from Lake Huron, and from 
the Mackenzie District and Alaska; but so far as known to the writer 
all the material from Newfoundland is the common American plant 
with white or whitish calyx-lobes. 
The next treatment of the species of special interest was that of 
Pursh in 1814. Pursh closely followed Aiton in distinguishing two 
American varieties of Andromeda Folifolia, a, angustifolia, Ait., and 
B, /atifolia, Ait., adding: “I strongly suspect the variety a. to be a 
distinct species, which might be called 4. rosmarinifolia”) This 
narrow-leaved form with red calyx-lobes, as already stated, is known 
not only from Labrador, but from Lake Huron, Mackenzie and 
Alaska, and in the Old World it seems to be not infrequent. In fact, 
from the ordinary form of A. Po/ifolia, it differs only in its narrower 
more revolute leaves. In the common American plant which has 
ordinarily passed with us as A. Po//fo/ia, both narrowly linear strongly 
revolute and oblong essentially flat leaves are often found on the 
same plant, as already noted by Macoun, who says “ Young and late 
shoots have wider leaves than the normal form.”? Similarly in 1778 
Pallas, whose beautiful plate shows clearly the different phases of 
the Old World plant, after describing the common narrow-leaved 
form shown in his figures A and B, added to the characterization 
“imo interdum latifolius (fig. D)”3— a figure of a sterile shoot 
which closely simulates the broad-leaved young branches of the 
American plant. Thus it is evident that the breadth of leaf in true 
A. FPolifolia as well as in its common American representative is 
largely due to the stage of development and is of no value as a 
diagnostic character. 
In 1821 the common American plant was described by Link as a 
species distinct from the European Andromeda Folifolia, a course 
which, as shown by Link's description and notes, was based upon a 
EP urshit secon. 
1 Macoun, Cats Gan, El. 1-297. 
u Pallas Fl. Ross: 4. pt, 2, S35 ta 7 i 
