Elementary botany . Fig. 343-Pollen grainwhite pine. 3oo MORPHOLOGY. When the pollen is mature, the moisture dries out of the scale(or stamen, as it is often called here) whileit ripens. When a limb, bearing a clusterof male cones, is jarred by the hand, or bycurrents of air, the split suddenly opens, anda cloud of pollen bursts out from the numer-ous anther locules. The pollen isthus borne on the wind and some of it falls on the female

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Keywords: ., bookauthoratk, bookcentury1900, bookdecade1900, booksubjectbotany