. The botany of crop plants : a text and reference book. Botany, Economic. HORACES 277 digitate, with five to eleven linear-lanceolate, pointed and serrate leaflets. Hemp is dioecious. The slaminate in- florescences (Fig. 108, A) are in axillary, narrow and loose panicles, the pistillate in erect, leafy spikes, also axillary. The slaminate borne on a slender pedicel subtended by a bracteole; it has five dis- tinct sepals and five short stamens. Each pistillate flower (Fig. 108, B) is sub- tended by a leafy bract, and possesses a single, thin, entire calyx segment, wrapped about the o
. The botany of crop plants : a text and reference book. Botany, Economic. HORACES 277 digitate, with five to eleven linear-lanceolate, pointed and serrate leaflets. Hemp is dioecious. The slaminate in- florescences (Fig. 108, A) are in axillary, narrow and loose panicles, the pistillate in erect, leafy spikes, also axillary. The slaminate borne on a slender pedicel subtended by a bracteole; it has five dis- tinct sepals and five short stamens. Each pistillate flower (Fig. 108, B) is sub- tended by a leafy bract, and possesses a single, thin, entire calyx segment, wrapped about the ovary. The ovary has two thread- like feathery stigmas. Hemp is wind-pollinated. The ovary matures into an ovoid, hard achene. The curved embryo is imbedded in a fleshy endo- sperm. The fruits of hemp are much larger and heavier when grown in a moist habitat than when grown in a dry one. Geographical.—The native home of common hemp is central and western Asia. It has spread, as a result of cultivation, throughout Europe, Asia and America. In many places, it has escaped from cultivation and become a rather troublesome Fig. ioS.—Hemp (Cannabis sativa). A, branch of staminate plant; B, single pistillate flower. (B after Wossidlo.). 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 Robbins, Wilfred William, 1884-1952. Philadelphia : P. Blakiston's Son
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Keywords: ., booka, bookcentury1900, bookdecade1910, booksubjectbotanyeconomic
