44 
known to be true, and certainly applies only in part to the Large- 
toothed Aspen. In this event Marshall's Populus deltoide(s) (1785) 
should replace Aiton’s P. monilifera (1789). 
Populus balsamifera, var. candicans, A. Gray (Man. Ed. 2, 419, 
1856). It has been generally conceded that the Populus Canaden- 
sis of Moench (Verz. Baume, No. 81), published in 1785, was 
applied to the variety of our Balm-of-Gilead, and is, therefore, an 
older name than Gray's candicans by seventy-one years. The P. 
balsamifera lanceolata, Marsh (1785), of the same date, and also 
referred to this variety as a synonym, doubtless had better be re- 
ferred to the type, the characters of which seems to fit Marshall's 
description with fewer allowances than are necessary in applying 
his name to the variety. The name for this variety should then 
become P. balsamifera, var. Canadensis (Moench)= P. Canadensis, 
Moench (I. c., 1785) =P. balsamifera, var. candicans, A. Gray (I.c., 
1856). 
Thuya gigantea, Nuttall (Journ. Phil. Acad. vii. 52, 1834). 
The oldest name applied to this species is the 7. péicata of Donn. 
(Hort. Cantab. Ed. 6, 249, 1811); but this name was published 
without description, and must be considered a omen nudum. 
Lambert, however, established the name eleven years later, 1824 
(Gen. Pinus, Rd. 1, ii. 19), and ten years before Nuttall applied 7. 
gigantea. T. plicata, of Lambert, (1824) should, therefore, replace 
T. gigantea, of Nuttall, (1834). 
Pinus Banksiana Lambert (Gen. Pinus Ed, 1, 7, t. 3, 1803): 
In the first edition of Aiton’s Hortus Kewensis (iii. 366, 1789) oc- 
curs this trinomial, “Pinus sylvestris, divaricata,’ founded on one 
of the principal characters of the Jack Pine, foliis divaricatis oblt- 
quis, Habitat ad Sinum Hudsonis. There is but one other pine in 
North-eastern North America, besides the Jack Pine, having two 
leaves in a sheath which could have been confused, i. e., the Red | 
Pine (Pinus resinosa); a species which Aiton carefully and fully 
describes on the next page of the same work. As acknowledged, 
moreover, by De Candolle and others, who cited the name as a 
synonym of Lambert’s P. Banksiana, there can be no question but 
that the Northern Jack Pine was the tree named. The name for 
this pine should then be Pinus divaricata (Aiton)= P. sylvestris, di- 
varicata (Aiton, l. c., 1789)=Pinus Banksianna, Lambert (1. cy 
