1919] Farwell,— Changes in Botanical Nomenclature 101 
NECESSARY CHANGES IN BOTANICAL NOMENCLATURE. 
OLIVER ATKINS FARWELL. 
POPULUS BALSAMIFERA Linn. Sp. Pl. ii. 1034 (1753); Miller, Dict. 
ed. 8, no. 5 (1768). P. angulatus Ait. Hort, iii. 407 (1789).— Populus 
balsamifera Miller, l. c., is referred by the Index Kewensis to P. 
deltoides and to P. heterophylla. A careful comparison of Miller's 
description with that of Linnaeus shows, however, that the two are 
identical, Miller having copied the technical description of Linnaeus, 
l. c., verbatim. Both quote Hort. Cliff. 460. A reference to the latter 
publication shows that species No. 4 Populus foliis cordatis crenatis 
is the one referred to. This is founded solely on Populus nigra, 
folio maximo, gemmis balsamum. odoratissimum fundentibus Catesby, 
Car. i. 34, t. 34 (1731), a Carolina species, also quoted by Miller, l. c. 
There is therefore no question as to the identity of the one with the 
other and that the binomial P. balsamifera belongs to the Carolina 
Poplar, as usually understood, since in last analysis the Linnaean 
species is founded upon that of Catesby. 
P. TACAMAHACCA Miller, Dict. ed. 8, no. 6 (1768). P. balsamifera 
Marshall, Arbust. Amer. 107 (1785), & French ed. 173 (1788). P. 
viminea Marsh. l. c. P. candicans Ait. Hort. iii. 406 (1789). P. 
ontariensis Desf. Hort. Par. P. balsamifera var. candicans A. Gray, 
Man. ed. 2, 419 (1858).— This is the common Balm of Gilead. Mil- 
ler's name, which is the oldest, should be adopted for it instead of the 
later one of Aiton. A form with very scanty pubescence is 
Var. Michauxii (Henry), n. comb. (P. balsamifera var. Michauxii 
Henry.) ic Er 
Another form, generally without cordate leaves and pubescence, is 
the Northern Balsam Poplar that has so generally been known as 
P. balsamifera. In accordance with priority this should bear the name 
Var. lanceolata (Marsh.), n. comb. P. balsamifera Linn. Syst. 
Nat. ed. 13, ii. 656 (1770) and possibly of some earlier editions, and 
also of most subsequent authors but not of Linn. Sp. Pl. ii. 1034 
(1753). P. balsamifera var. lanceolata Marsh. Arbust. Amer. 108 
(1785), & French ed. 173 (1788). 
VERONICA PERSICA Poir. Dict. viii. 542 (1808). V. Buxbaumii 
