Louis Hermann Pammel Ecology

ISBN 13: 9781236100610

9781236100610: Ecology

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1903 Excerpt: ... year. It flowers most abundantly in the month of January. The humming bird is especially active during the cooler hours of the morning and in the evening from four to six. "They were to be seen whirling about the tree by scores. They dart to and fro so swfitly that the eye can scarcely follow them, and when they stop before a flower it is only for a few moments. They poise themselves in an unsteady manner, their wings moving with inconceivable rapidity, probe the flower,' and then shoot off to another part of the tree." NO. 1. NO. 2. Fig. 86. 1. Orange flowers (Citrus aurantium) mature orange flower, the calyx lobes below the spreading lobes of the petals and stamens rising in the center in close proximity of the pistil. 2. The same flower with anthers a. removed. (Swingle and Webber, U. S. Dept. of Agrl.) Mr. C. P. Hartley notes that the blossoms and buds of different ages of the orange have receptive stigmas before the flowers open. "But on examintion of blossom buds at different ages show that the stigmas were receptive, if the presence of stigmatic fluid is a sure indication of receptiveness, in buds that would not have been fully open for nine days." The results obtained by him in regard to premature pollinations show a greater per cent, of germinations of seed than those from the ordinary orange. The seedlings resulting from the premature pollinations are not feeble. They likewise show polyembryonic tendency to a greater degree than other seedlings. The corolla Trifolium pra Red Clover. tense) consists of the following parts: An upper larger petal known as the standard, two lateral petals known as the wings, and two lower petals resembling the keel of a boat which are united and are commonly known as the keel. Tbe keel contains te...

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