Trelease.] 
428 
[March 15, 
slopes abruptly upward near the mouth, forming thus an oblique 
plane against which the flat connectives press. The action of 
the anther lever also appears to be sufficiently stiff to prevent 
the proboscis of a butterfly frofn working it. From the hinge 
downward, as far as they are exposed when undisturbed, the con- 
nectives are covered with red hairs that are glandular and appar- 
ently perform the double service of adding to the attractiveness 
of the flower and aiding in the exclusion of undesirable insects. 
A delicate bristle is with difficulty introduced between the 
connectives and the plane against which they rest, and can only 
be forced further into the flower by being bent around their end, 
for it seldom moves them. Its action may be taken as represent- 
ing that of a butterfly’s trunk. A slender probe, representing the 
beak of a humming bird, readily pushes the connective back and 
passes into the tube, but in doing this the polliniferous ends of 
the anthers are brought upon it and charge it with pollen. 
Here, although there seems to be no dichogamy, self-fertiliza- 
tion must be quite impossible. A comparison of this species with 
S. splendens shows that, although at first sight less closely adapted 
to birds in having a wider corolla, a broad lower lip that might 
serve as an alighting place for insects, and apparently shorter 
arms to the lever, S. gesneriaefolia is even more highly specialized 
than its relative. For by the abrupt rise in the floor of the cor- 
olla the opening is reduced to the same dimensions, while the 
unreduced lower lip increases the conspicuousness of the flower, 
its presence not being harmful because of the more perfect closure 
of the mouth. The adornment of the terminal portion of the 
style and of the exposed parts of the connective plate is to be 
regarded as further specialization for the attraction of favored 
visitors and the exclusion of all others. 
Salvia Heerii belongs to quite a distinct group, with elongated 
and exserted stamens, fig. 30. The style varies somewhat in 
length, sometimes being considerably longer than the stamens, at 
other times more nearly equal to them. Dichogamy was not 
noted. The flowers contain an abundance of nectar, which is 
protected from creeping insects by the glandular hairs of the 
calyx and the dense reflexed pubescence of the scarlet corolla. 
The exsertion of the stamens does away with the necessity for 
their movement, so the union of the connective with the filament, 
