part] § THE MECHANISMS OF FLOWERS. 507. 
stigmas protrude far beyond the flower. The form Bon the other 
hand has a scape about 6 inches long, and shorter reddish filaments 
which do not bend under the weight of the anthers; the lobes of 
the corolla are rounded, and do not spread apart but only point 
obliquely upwards, and the stigmas protrude little from the flower. 
The pollen in both forms is powdery, but is slightly more adhesive 
in the second form (B), as may be seen by the filaments in this 
form being usually covered thickly with pollen-grains. 
Fig. 171.—Plantago media, L. 
A, 1—5.—A form of P. media from dry sunny slopes on Rixbecker Hill, near Lippstadt. 
1, bud; 2, developing flower ; 3, fully developed flower; 4, corolla; 5, pistil. 
8, Sepal; p, petal; a, anther; st, stigma. 
B. 6—8.—Another form of P. media, growing in damp shady spots on the same hill, often within 
a few paces of the other. , 
6, fully developed flower ; 7, corolla; 8, pistil. 
The form growing on the slopes of the canal-embankment, 
from which I have chiefly compiled my list of insect-visitors, has 
a scape 10 to 14 inches long, a spike 35 to 90 mm. long, and 
stamens which project only 4°5 to 7 mm. beyond the flower; in the 
form and development of the corolla and style and in the nature 
of the pollen it agrees well with the form B from the Rixbecker 
Hill. ) 
