116 LEAFLETS. 
I must not be understood as reasserting the statements of 
early authors that in 7. vuigare the leaflets are always entire. 
In the herbaria they are shown to be prevailingly so, but with 
occasionally entire and somewhat toothed leaflets on the same 
branch, or on the same leaf. 
T. vulgare seems to be the common species in Canada, New 
York and New England, extending also both southward in the 
mountains, and westward toward the valley of the Mississippi. 
T. GLABRUM, Mill. Le 
Toxicodendron rectum, foliis minoribus glabris, Dill. Elth. 
389, t. 291. Rhus radicans var. y. Linn. Sp. 266. 
According to both Dillenius and Miller this is a shrub with 
strictly upright stems, never rooting or attaching themselves to 
any support, and with a foliage smaller and leaflets narrower 
than in 7. vulgare. Itis not always low. With Miller it grew 
to the height of 6 or 7 feet. It should be distinguished from 
T. vulgare by these marks and by its small fruits more nearly 
globose, not at all depressed-globose, and by being cuspidate- 
mucronate. 
The habitat of T. g/abrum is probably northeastern, and that of 
7. vulgare approximately or altogether the same. From the name 
glabrum alone, the authors of the Kew Index seem to have 
inferred—but very erroneously—that this must be a synonym of 
Rhus glabra, Linn. They might have escaped this error either 
by reading Miller’s description of 7. g/aérum, or by consulting 
his account of Rhus in the same volume; for the real R. glab- 
rum is found in its place and with that name. 
T. PUBESCENS, Mill. Dict. (1768), excluding the synonym 
“T. triphyllum glabrum, Tourn.,” also Moench, Meth. 73. 
Rhus Toxicodendron, Linn. Sp. 266, hardly of Small, Fl. 727. 
A common shrub of the northern and middle Atlantic states, 
distinguished from both the foregoing by its more constantly 
sinuate-lobed leaflets, perhaps, but by the hirsute pubescence of 
the growing parts, especially of the leaves along the veins 
beneath. It is plain that Miller inadvertently cited the wrong 
Tournefortian species under his 7. pubescens. It should have 
been—and I doubt not he meant it to be—not the first but the 
