504 THE FERTILISATION OF FLOWERS. [PART 111. 
form that has become entomophilous ; the filaments have become pink, the 
anthers are motionless, the pollen-grains have become more aggregated, and it 
is visited regularly by Bombus terrestris, as I have observed at the same spot 
(Chiavari) in the Apennines.” 
I have transcribed this passage in order to induce botanists in 
as many places as possible to observe the forms of this species 
with reference to its adaption for insect-visits. . 
In the neighbourhood of Lippstadt I have caught pollen- 
collecting bees and pollen-feeding flies both on plants with tall 
Fia. 170.—Plantago lanceolata, I. 
1.—Flower, in first (female) stage. The petals and stamens are still within the bud. 
2.—Ditto, after removal of the calyx. 
8,—An anther from this flower. 
4.—F lower, in second (male) stage. 
5.—The two inferior coherent sepals, 
6.—A lateral sepal. 
scapes and long spikes and on those with short scapes and spikes ; 
and in neither form have I found the least trace of adaptation to 
insect-visits. Delpino’s account is not minute enough to permit 
a correlation of his plants with those of other localities, and it is 
quite possible that the varieties which he has observed do not 
occur at Lippstadt. 
It is just possible that Delpino has been led into imagining 
adaptations which have no real existence by the success which the 
honey-bee attains in gathering pollen, chiefly owing to its plan of 
smearing the pollen with honey. The two extreme forms of P. 
— eile 
