1912] Wiegand,— Amelanchier in eastern North America — 125 
page for var. cordata, and "fruticosa" for var. oligocarpa, so that 
“ arborescens” might signify a high shrub. The writer has had access 
to a photograph made by Prof. Fernald of the Michaux type specimen 
in the Michaux herbarium (Mus. Hist. Nat. Paris) which, though not 
conclusive, seems more like the large-flowered, coarse-toothed species 
than any other; and this interpretation seems to have been that 
reached by other recent botanists who have studied the type. The 
Michaux variety was raised to specific rank and transferred to Ame- 
lanchier by Roemer ! in 1847. Unfortunately in 1814 Pursh described 
a Pyrus sanguinea? There has always been doubt as to the identity 
of this plant; and, so far as known, no specimen is in existence. 
Pursh cites as the only synonym the M. canadensis y rotundifolia 
of Michaux, but he further says “tenuissime serratis...A small 
tree... berries red...” which are not the characters of Michaux’s 
plant. Moreover the locality is given as, “In Canada and on the 
banks of the Columbia.” Since that time attempts have been made 
to apply Pursh’s name, but in a most diverse manner (see Lindley 
in Bot. Register t. 1171, and Loudon, Arb. et Fruct. p. 875). Evi- 
dently Pursh confused at least two plants, and evidently the only 
thing definite in connection with the Pursh name is the Michaux 
synonym, but that is definite and the name need not be a source of 
confusion; therefore the writer is inclined to believe, with Dr. Britton, 
that Pursh’s specific name should be retained for Michaux’s plant. 
Even if Pursh’s name is not used, the name rotundifolia cannot be used 
as a specific name for our plant, as it is an earlier valid name for the 
native European species.’ 
The dwarf stoloniferous species with coarsely toothed leaves seems 
never to have been definitely recognized. In literature and in the 
herbarium it has been confused, sometimes with the species here called 
Amelanchier sanguinea, and sometimes with that here called 4. 
stolonifera. The description of Blanchard's A. erecta * at first glance 
1 Fam. Nat. Syst. Rosif., p. 146. 
? Fl. Am. Sept., p. 340. 
3 There is said to be a specimen of '' A. alnifolia,” which went through Pursh's 
hands, in the Lewis and Clark set at the Philadelphia Academy of Natural Science. 
If so, this may have given rise to the entry in Pursh's flora of the Columbia River 
locality. But since the specimen is reported not to have been named by Pursh, and 
since there is no reference in the Flora to this specimen, it is simply an inference that 
this specimen represents the Pyrus sanguinea of Pursh's Flora. (See Robinson & 
Greenman, in Thos. Meehan, Proc. Acad. Nat. Sc. Philadelphia, Jan., 1898). 
t Torreya, vii. p. 101. 
