Fluorescence Digital Image Gallery

Female Pine Cone

Pine trees are gymnosperms, nonflowering plants that produce exposed seeds not enclosed in an ovary. They are also monoecious, bearing gametes of both sexes on the same tree. These gametes are housed in a structure called a strobilus, or cone. Female pine cones are generally found in the upper branches of the tree crown, above the male cone. This reduces the possibility of self-fertilization by the wind-borne male gametes.

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