Botany for young people. How plants behave: how they move, climb, employ insects to work for them, &c (1872)
Gray, Asa, 1810-1888 · New York, American Book Company · leaf 40
y against the stigma, and, commonly revolving on it as if on a pivot while it sucks the nectar in the bottom of the flower-cup, liberates the ten bowed stamens, and receives fresh charges of pollen from that flower while fertilizing it with the pollen of the preceding one. This account is founded… … Figs. 26 - 29. Flower of American Laurel , Kalmia latifolia. 26. Flower-bud divided lengthwise. 27. Open flower. 28. Section of same, lengthwise. 29. A stamen enlarged, discharging pollen from the two holes at the top.
Botany
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.