. Experiments with plants. Botany. THE WORK OF FLOWMBS 305 Twinberry, Checkerberry, Deerberry and Squaw-vine) illustrates another method. Fig. 168 represents two one of these the anthers are A/l/- '~A/». 168. Partridge - berry flower cut open: the bee's tongue receives pollen upon its lower portion in a, from the anthers {an), and deposits it on the correspondiug stigma {st) in b, and vice versa. flowers cut open. In placed high up in the tube, while the stig- mas are below: in the other the reverse is true. The bee, in thrusting its long tongue into ^, receives the pollen on the lower portion
. Experiments with plants. Botany. THE WORK OF FLOWMBS 305 Twinberry, Checkerberry, Deerberry and Squaw-vine) illustrates another method. Fig. 168 represents two one of these the anthers are A/l/- '~A/». 168. Partridge - berry flower cut open: the bee's tongue receives pollen upon its lower portion in a, from the anthers {an), and deposits it on the correspondiug stigma {st) in b, and vice versa. flowers cut open. In placed high up in the tube, while the stig- mas are below: in the other the reverse is true. The bee, in thrusting its long tongue into ^, receives the pollen on the lower portion of the tongue and, going to B, de- posits it on the stig- mas: in going from B to ^, it would receive the pollen on the upper portion of its tongue and deposit it on the stigmas in the corre- sponding position. On going from A to another flower of the same kind, the pollen from A would not reach the stigma, and, even if it should, experiments indicate that it would not take effect: it is effective only when deposited on a stigma of corresponding position. A similar arrangement is found in the cultivated Prim- rose and in the Houstonia (also called Quaker Ladies and Quaker Bonnets). The. Sage has a neat device for the purpose of load- ing the bee with pollen and preventing self-pollination. Fig. 169 {A) represents the flower-tube cut open,. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Osterhout, Winthrop John Van Leuven, 1871-. New York, The Macmillan company; London, Macmillan & co. , ltd.
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Keywords: ., bookcentury1900, bookdecade1900, bookpublisher, booksubjectbotany
