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CHARLES V. RILEY. The Yucca Moth and Yucca Pollination. Third Annual Report of the Missouri Botanical Garden, 1891, St. Louis, Mo., May, 1892, pp. 99-158.
Plates XXXIV-XLIII. Also separate author's copies issues May 28, 1892.
part I of the paper deals with the pollination of Yucca by Pronuba and contains the following chapters; introductory; fertilization of plants generally; Connection of Yucca and Pronuba; structural characteristic of Pronuba; the acts of pollination and oviposition; development of the egg and larva; transformations of Pronuba; effect of puncture on the fruit; effect of fertilization on the stalk; dates of the flowering of the Yuccas, and appearance of the moth; need of Pronuba; self-fertilization of Yucca; Pronuba the only insect pollinizer; general consideration; the Bogus Yucca moth. Part II is devoted to descriptive details and contains the following