126 
Lake Superior, of Dr. Gray’s collection. Filaments slightly 
bearded at base with a few scattered hairs on the style (Fig. 8), 
tube of corolla long and narrow. 
Chapman’s specimen, also from Navy Island, has the same 
characters as the other (Fig. 7). 
Wautauga River, North Carolina. Filament and style wholly 
glabrous, as in Fig. 5. 
Blair county, Pennsylvania. Filament and style glabrous. 
Huntingdon county, Pennsylvania. Filament glabrous; style 
with scattered hairs, intermediate between Figs. 6 and 8. 
Easton, Pennsylvania. Filament hairy at base, as in Fig. 25 
style glabrous. 
Lancaster county, Pennsylvania. Filament and style wholly 
glabrous. 
Of the twelve specimens of ZL. hirsuta examined, ten have the 
filaments hirsute or more sparingly hairy at base, often with hairs 
more thinly distributed nearly to the top, one has glabrous flan 
ments, and one has but a few hairs at the base. The styles in - . 
of the plants are more or less densely hirsute throughout, one ~ 
glabrous, and one but slightly hairy at a point near the base. 
Of the ten specimens of L. glauca five were found to have gla- : 
brous filaments, two had fine pubescence on the lower half and — 
three were more or less hairy at base. The styles were glabrous 
in seven specimens; in two, thinly hirsute throughout; in one, 
with scattered hairs. Z. 
It, therefore, appears that the characters under consideration 
are variable, especially in Z. g/auca, but may with safety be given 
as follows: L. hirsuta, style and base of filament usually hirsute 
but occasionally glabrous or nearly so; L. glauca, style and 
filaments usually glabrous, but the style sometimes more of leat 
hairy, and base of filaments hairy or pubescent. as 
