Annotated List of Honey-Plants.
In the following lists an effort is made to give the nectar and pollen plants that are of value from the beekeepers' standpoint. No attempt has been made to include all nectarless flowers or those that might possibly yield nectar under peculiar conditions in certain localities. The list here given includes the pollen and nectar plants that are generally known to Wisconsin beekeepers. Where they occur only in peculiar localities but are of importance, special reference is made thereto. Mistakes are often made in regard to many flowers, the bees being reported as bringing in both pollen and nectar when such is not the case. Possibly some of these errors have arisen from the presence of honey-dew on the leaves. A list of the important pollen plants is, therefore, given separately. A great number of flowers yield both pollen and nectar; but these are placed under HONEY PLANTS. The species in the following list are nectarless unless otherwise stated.
PLANTS THAT YIELD POLLEN ONLY.
ALDER. (Alnus) Wind-pollinated; the small brownish flowers appear in early spring. The filaments (staminate) of the common or hoary alder (A. incana) are visited by honeybees for pollen.
ANEMONE. (Anemone quinquefolia) Large white pollen flowers; pollen gathered by bees in spring.
ASH. (Fraxinus) Some species pollinated by insects, others by the wind; small greenish flowers.