a 
a 
1898] FLOWERS AND INSECTS 241 
the anthers; Knuth (38) shows that, as a result of the correlated 
movements of the style and stamens, the anthers are exposed 
in the way of the visitor on the first evening and the stigma on 
thesecond. L. alpigena is homogamous ( Miiller) and proterogy- 
nous (Kerner). In one place Meehan says L. Japonica is 
proterogynous (23), in another homogamous (36). L. nigra 
and Tatarica are homogamous (Miler). JL. /berica is slightly 
proterogynous (Kirchner 28). The common woodbine (?) and 
L. sempervirens are proterandrous (Schneck 27). In L. alpigena, 
nigra, etc., according to Kerner, there occurs a change of position 
of the stamens and stigma by which they are placed in the way 
ofthe visitors at different times, probably as in ZL. periclymenum. 
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