. Elements of botany. Botany. 72 KEY AND FLOKA 6. P. dumetorum L. False Bfckwukat, Perennial. Stems slen- fler, twining, branched, 2-10 ft. long. Leaves ovate, taper-pointed, heart-sliaped to lialberd-shaped at the base, long-petioled. Stipules cylindrical, truncate. Flowers in axillary, more or less compound and leafy racemes. Calyx greenish-white, the outer lobes winged and form- ing a margin on the pedicel. Stamens 8. Stigmas )j. Akene 3-angled, black, smooth, and shining. Margins of fields and thickets* III. FAGOPYRUM Hill iSmootli annual herbs, witli more or less triangular leaves ; the s
. Elements of botany. Botany. 72 KEY AND FLOKA 6. P. dumetorum L. False Bfckwukat, Perennial. Stems slen- fler, twining, branched, 2-10 ft. long. Leaves ovate, taper-pointed, heart-sliaped to lialberd-shaped at the base, long-petioled. Stipules cylindrical, truncate. Flowers in axillary, more or less compound and leafy racemes. Calyx greenish-white, the outer lobes winged and form- ing a margin on the pedicel. Stamens 8. Stigmas )j. Akene 3-angled, black, smooth, and shining. Margins of fields and thickets* III. FAGOPYRUM Hill iSmootli annual herbs, witli more or less triangular leaves ; the sheathing stipules cylindrical or funnel-shaped. Flowers bisexual, white, greenish or tinged witli rose color, in terminal or axillary, often panicled, racemes. Calyx petal-like (Fig. 14), 5-parted. Stameus 8. Styles 3, with knobbed stigmas. Akene 3-angled, much longer than the persistent calyx (Fig. 1-t).. Fig. 14. Buckwheat {Fa', section of flower ; C, fruit. (.\U .somewhat magnilied.) (.\fter Marcbanfl) 1. F. esculentum ^tceiich. Annual, nearlv smooth. Leaves halbenl-sliaped, l-o in. Imig. Flowers white or nearly so, with 8 yllow nectar-bearing glands between the stamens. Old fields and thickets, escaped from cultivation. Introduced from Europe or west- ern Asia. 26. CHENOPODIACE^. Goosefoot Family Herbs or shrubs. Leaves simple, alternate, without stipules. Flowers small, actiiiomor[)hic, either bisexual or more or less monoecious or dicEcious. Calyx free from the ovary. Corolla wanting. Stamens usually 5, opposite the sepals. Styles or stigmas generally 2. Fruit with 1 seed, usually inclosed in a small, liladdery sac, sometimes an 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 Bergen, Joseph Y. (Joseph Young), 1851-1917. Boston, Ginn
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