. Bulletin. 1901-13. Agriculture; Agriculture. 18 ARKAXOKMKXT OF PARTS IX T11E COTTON PLANT. The two large lobes of the calyx alternate with two of the involu- cral bracts, and each of these lobes is usually provided wit h a aecl ary. The intermediate lobe and the remaining small lobe do not appear to be definitely alternate or opposite to any of the bracts. (Pig. 6.) Often the intermediate lobe approaches the size of the large lobes, especially in the Upland varieties. It then appears more nearly alternate with the involucral bracts and usually has a nectary at its base, like the other large
. Bulletin. 1901-13. Agriculture; Agriculture. 18 ARKAXOKMKXT OF PARTS IX T11E COTTON PLANT. The two large lobes of the calyx alternate with two of the involu- cral bracts, and each of these lobes is usually provided wit h a aecl ary. The intermediate lobe and the remaining small lobe do not appear to be definitely alternate or opposite to any of the bracts. (Pig. 6.) Often the intermediate lobe approaches the size of the large lobes, especially in the Upland varieties. It then appears more nearly alternate with the involucral bracts and usually has a nectary at its base, like the other large lobes. In other* cases the nectary is usually absent. ARRANGEMENT OF THE INTRACALICARY OR- GANS. Inside of the calyx of the cotton flower, between the calyx and the petals, a series of small, greenish, oboval or spatulate organs may often be found. (Fig. 7.) The com- plete number of these organs is five and they are arranged in regular alternation with the lobes of the calyx. The size is extremely variable, so that the full number is sel- dom to be seen by the naked eye. Some of them are usu- ally represented by minute rudiments visible under a lens Fig. 5.—Flower of Upland cotton, from the side, showing aS Small tuits 01 nan's at the the position of the small calyx lobe opposite the smallest base of the Calvx. When Very bract. (Xaturalsize.) , , , large they may extend to the margin of the calyx, and in rare cases may project slightly above it. That these organs are arranged in alternation with the lobes of the calyx is rendered the more apparent by the fact that they stand in front of faint transparent lines that mark the sutures between the component parts of the calyx. This was first observed in the Willet's Red Leaf variety of Upland cotton, where the deep-red color of the outside of the catyx makes the transparent lines more distinct. These lines are often very faint, but they seem to be generally present. The intracalicary organs may be free from the calyx to near the
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