376 . THE FERTILISATION OF FLOWERS. [PART IIT. 
Tribe Andromedee. 
Epigea is tetramorphic, possessing four kinds of flowers, which 
differ partly in the length of the style, partly in the conan of 
the stigma and anthers (ase Gray, No. 285). a 
Tribe Fricec. 
286. ERICA TETRALIX, L.—The pendulous, urceolate flower i 
7 mm. long, 4 mm. wide in the middle, and 2 mm. wide at the 
Fr@. 122.—Erica tetralix, L. 
Flower, after removal of half the calyx and corolla. 
a, sepal; b, corolla; c, its recurved limb ; d, anthers, partly displaced ; e, their orifices; /, thei 
appendages ; 9: nectaries ; h, ovary; i, style ; k, stigma. 
mouth. The base of the ovary is surrounded by a dark, glandular — 
ring which secretes honey. The style (2) stands in the axis of the — 
flower, extending to the mouth of the corolla; it bears at the — 
end a blackish, moist, sticky stigma (%), which protrudes slightly _ 
from the mouth of the flower, so that an insect, hanging beneath 
the flower and thrusting its proboscis towards the honey at the — 
base, must bring the forepart of its head in contact with the 
stigma and be smeared with the sticky secretion. The eight 
anthers lie in a circle close around the style, a little way above the — 
stigma (in the inverted position of the flower); each possesses two — 
long, sharp, divergent processes, which reach to the sides of the 
