. Bulletin. 1901-13. Agriculture; Agriculture. 20 hi MolilMI IC LEAVES IN RELATION TO IIKIMhin TWO TYPES OF DIMORPHISM OF LEAVES IN COTTON. The dimorphism of leaves in I [ibiscus is of the same type as t hal of the nanow-lcaved "okia" cottons, as already indicated. But there i^ another type of dimorphism of leaves in cotton, connected with a definite dimorphism of the branches. The leaves of the fruiting blanches of cotton are smaller than those of the mail! stalk and vegetative branches and often have nectaries on only one or two of. Fig. 9.—Leaf of "Park's Own," an "
. Bulletin. 1901-13. Agriculture; Agriculture. 20 hi MolilMI IC LEAVES IN RELATION TO IIKIMhin TWO TYPES OF DIMORPHISM OF LEAVES IN COTTON. The dimorphism of leaves in I [ibiscus is of the same type as t hal of the nanow-lcaved "okia" cottons, as already indicated. But there i^ another type of dimorphism of leaves in cotton, connected with a definite dimorphism of the branches. The leaves of the fruiting blanches of cotton are smaller than those of the mail! stalk and vegetative branches and often have nectaries on only one or two of. Fig. 9.—Leaf of "Park's Own," an "okra" variety of American Upland cotton. (Natural size.) the principal veins, even when the leaves of the main stalk and vege- tative branches have three nectaries with much regularity. The dimorphism is not so easily recognized in the blades of the leaves, because of the general freedom of variation in sizes and shapes, but appears much more definite when attention is given to the stipules. On the main stalk and the vegetative branches the leaves nave the two stipules equal in size and narrowly lanceolate or strap 221. 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 United States. Bureau of Plant Industry, Soils, and Agricultural Engineering. Washington Govt. Print. Off
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