Wild Flowers - An Aid to Knowledge of Our Wild Flowers and Their Insect Visitors by Neltje Blanchan
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page 17 of 638 (02%)
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Preferred Habitat - Rich, moist woods.
Flowering Season - April-June. Distribution - Nova Scotia westward to Manitoba, southward to North Carolina and Missouri. Some weeks after the jubilant, alert robins have returned from the South, the purple trillium unfurls its unattractive, carrion-scented flower. In the variable colors found in different regions, one can almost trace its evolution from green, white, and red to purple, which, we are told, is the course all flowers must follow to attain to blue. The white and pink forms, however attractive to the eye, are never more agreeable to the nose than the reddish-purple ones. Bees and butterflies, with delicate appreciation of color and fragrance, let the blossom alone, since it secretes no nectar; and one would naturally infer either that it can fertilize itself without insect aid - a theory which closer study of its organs goes far to disprove - or that the carrion-scent, so repellent to us, is in itself an attraction to certain insects needful for cross-pollination. Which are they? Beetles have been observed crawling over the flower, but without effecting any methodical result. One inclines to accept Mr. Clarence M. Weed's theory of special adaptation to the common green flesh-flies (Lucilia carnicina), which would naturally be attracted to a flower resembling in color and odor a raw beefsteak of uncertain age. These little creatures, seen in every butcher shop throughout the summer, the flower furnishes with a free lunch of pollen in consideration of the transportation of a few grains to another blossom. Absence of the usual floral attractions gives, the carrion flies a practical monopoly of the pollen food, which no doubt tastes as it smells. |
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