. The Indiana weed book. Weeds. 68 THE INDIANA WEED BOOK. Polygonum convolvulus L. ) Black Bindweed. Wild Buckwheat. ( Fig. 35. Showing the flower and fruit. (After Small.) Stem twining or trailing, 6 inches-3 feet long, roughish,J the joints naked; leaves ovate or arrow-shaped, pointed, long- stemmed, 1-3 inches long. Flowers in loose axillary clus- ters, greenish-white, drooping;;; calyx 5-parted, adhering close- ly to the achene which is 3-angled, black, granular, dull- pointed, I inch long. (Figs. 6, a; 35.) Common in lowlands, es- pecially in corn- and wheat- fields, where it often
. The Indiana weed book. Weeds. 68 THE INDIANA WEED BOOK. Polygonum convolvulus L. ) Black Bindweed. Wild Buckwheat. ( Fig. 35. Showing the flower and fruit. (After Small.) Stem twining or trailing, 6 inches-3 feet long, roughish,J the joints naked; leaves ovate or arrow-shaped, pointed, long- stemmed, 1-3 inches long. Flowers in loose axillary clus- ters, greenish-white, drooping;;; calyx 5-parted, adhering close- ly to the achene which is 3-angled, black, granular, dull- pointed, I inch long. (Figs. 6, a; 35.) Common in lowlands, es- pecially in corn- and wheat- fields, where it often twines about and pulls down the stalks or weeds. June-Sept. The leaves and seeds are similar to those of buck- wheat and the plant is dis- tributed widely by overflow of the flood plains and by birds and the droppings of cattle. Rem- edies: mowing and burning before* the seeds ripen; thorough cul- tivation with hoed crops; sowing clean seed; early fall plowing and harrowing to induce the seeds to sprout before winter. 24. Polygonum scandbns L. Climb- ing False Buckwheat. Bind- weed. (P. N. 3.) Stem climbing, 2-25 feet long, rather stout, branched. Leaves heart- shaped, pointed, 1-6 inches long. Flow- ers greenish yellow, in numerous inter- rupted leafy panicles; Calyx 5-parted, the three outer segments strongly keeled and in fruit winged. Seeds black, triangular, 1/6 inch long, blunt, smooth, shining. Common in moist soil, along fence-rows, borders of thickets and cultivated fields, climbing high over fences, shrubs, brush piles, etc. July-Oct. The seeds are often Fig'36' Sh{mitEt(Afto,Smau1three'Bidcd. 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 Blatchley, W. S. (Willis Stanley), 1859-1940. Indianapolis, The Nature publishing company
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectweeds, bookyear1912
