. A manual of Indian botany. Botany. ENTOMOPHILOUS FLOWERS 129. Fig. 112.—Bakas (A tihtztoda I'asicn) lip, are usually pollinated by bees. In consequence of a bend in the tube (a) the bee is prevented from going right down into the corolla-tube, as it does in Goldfussia. Thus forced to remain upon the plat- form, it uncoils its long pro- boscis and sends this down for honey. While thus exert- ing itself, it presses upon the bend, and thereby the lower lip is moved slightly down- wards. This does not move the upper lip, stiffened as it is by three longitudinal folds along its back, but moves th
. A manual of Indian botany. Botany. ENTOMOPHILOUS FLOWERS 129. Fig. 112.—Bakas (A tihtztoda I'asicn) lip, are usually pollinated by bees. In consequence of a bend in the tube (a) the bee is prevented from going right down into the corolla-tube, as it does in Goldfussia. Thus forced to remain upon the plat- form, it uncoils its long pro- boscis and sends this down for honey. While thus exert- ing itself, it presses upon the bend, and thereby the lower lip is moved slightly down- wards. This does not move the upper lip, stiffened as it is by three longitudinal folds along its back, but moves the stamens (st) from the upper lip and makes them come forcibly in contact with the back of the insect. The style (pistil), which is not yet mature, for the flowers are protandrous, is held firmly in a groove of the upper lip, but on ripening it leaves this groove and curves downwards into the tube of the corolla, and the stigma comes in contact with the pollen-covered back of a bee which had pre- viously visited a younger flower with mature stamens. The lower lip is also marked with red bands and nectar- guides which unmistakably point to the honey-cham- ber. Fig. 113 represents a flower closely allied to bakas, and also protandrous like the latter, c has a ripe pistil in the position of shorter stamens of A, and B has a ripe pistil in the position of the longer stamens (0 946) 10. 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 Bose, G. C. London, Blackie & Son Ltd.
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectbotany, bookyear1920
