392 THE FERTILISATION OF FLOWERS. [PART IIT, 
size (ef. Fig. 128, 1 and 2). The plant, therefore, no longer attracts 
insects, but by the closure of the flower the stigma is drawn 
inwards and brought in contact with the three inferior anthers; so 
that self-fertilisation results, unless insects have been attracted 
during the warm hours of the day and have removed the pdllen 
from the anthers, at the same time cross-fertilising the stigma. 
I have not yet observed insects visiting either species. — 
Trientalis europea, L., is proterogynous and devoid of honey 
(590, III). 
Orv. HBENACEZ. 
Dospyros virginiana, L., according to Asa Gray, is probab , 
androdicecious (167, 2nd ed.). 
OrD. OLEACE 2. 
Species of Jasminum are self-fertilised, according to Treviranus 
(742), the style curving back towards the anthers. Kuhn mentions 
Jasminum as containing dimorphic species (399). ¥ 
Horsythia is heterostyled (Darwin, No. 167), but not invariably 
SO (590, III.). “oa 
291. SyRINGA VULGARIS, L.—Honey is secreted by the ovary, 
and occupies 2 to 4 mm, of the tube, which is 8 to 10 mm. long; 
Fic. 129,—Syringa vulgaris, L. 
1,—Flower, from the side, after removal of half the corolla. 
2.—Ditto, from above. 
8.—Mouth of the flower, immediately after its expansion. 
4.—Ditto, somewhat later. 
8, sepal; p, petal ; fi, filament; a, anther; po, pollen ; ov, ovary ; st, stigma. 
it is sheltered from rain by the two stamens, which to a great t 
extent fill up the mouth of the tube, and the length of the tube 
