Oligolectic on Echium (Boraginaceae) (Amiet et al., 2004; Benoist, 1931; A. Müller, unpublished, based on 12 pollen samples from 7 different localities and on field observations).
Oligolectic on Echium (Boraginaceae) (Amiet et al., 2004; Benoist, 1931; A. Müller, unpublished, based on 12 pollen samples from 7 different localities and on field observations).
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