424 BOTANICAL GAZETTE [NOVEMBER 
1. TILIA GLABRA Vent.—Tilia americana var. a densiflora V. 
Engler, Monog. Tilia, 137 (in part). 1909; Tilia americana var. 
densiflora {. megalodonta V. Engler, |.c. 139. 1909; Tilia americana 
var. densiflora {. laxiflora V. Engler, l.c. 140. 1909.—For the 
northern lime tree with glabrous leaves the name Tilia americana 
has been adopted in recent years by all authors who have written 
on American trees. LINNAEUS, however, based his species on the 
Tilia floribus nectariis instructis of Kaw, quoting as synonyms 
of Katm’s species the Tilia foliis majoribus mucronatis of CLAYTON 
and the Tilia amplissimis glabris foliis, nostrati similis of PLUKENET 
Mant. 181. KaAtm’s specimen is not in the Linnaean Herbarium, 
and it is impossible to identify it from the description, which applies 
as well to anyone of the 3 species which KatmM may have seen. 
Indeed both T. neglecta and T. heterophylla Michauxti are more 
common in the part of the country which he visited than the tree 
which recent authors have called T. americana; and it is impossible 
to identify Katm’s plant. Cxayron’s description cannot be applied 
to the northern glabrous tree, for it is not known to grow in CLAY- 
TON’s region; and as it is impossible to determine if more than one 
species was included in Linnarvs’ T. americana or, if the name was 
applied only to one species, what that species was, it seems neces- 
sary to give up entirely the name of T. americana Linnaeus. This 
name was taken up by Mrrter in the eighth edition of The 
Gardener's Dictionary, but the leaves of MILLER’s T. americana 
are described as ‘“‘subtus pilosis,” and his species is probably the 
T. neglecta of Spacu, which is now known to be an old inhabitant 
of European gardens. Arron’s description in the Hortus K ewensts, 
“T. floribus nectario instructis, foliis profundis cordatis argule 
serratis glabris,”’ well describes the northern glabrous tree, although 
he follows Linnatvs in calling it a native of Virginia and Canada. 
The T. caroliniana of MARSHALL but not of MILLER is probably 
the northern tree, and his 7. americana with leaves a little hairy 
underneath is evidently T. neglecta, which is the common species in 
MarsHALL’s region. If the 7. americana of LINNAEUS is rejected, 
it is necessary to determine what name should be adopted for it- 
The next name used for this tree is T. glabra of VENTENAT, published 
in 1800, and this seems to be the name which should be adopted 
