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Polygonum striatulum
Also called Texas Knotweed
Polygonum striatulum, the striped knotweed or Texas knotweed, is endemic to the U.S. state of Texas but cultivated as an ornamental elsewhere. It occurs there in sterile prairies, granitic soils, and in places that are seasonally moist, at elevations of 100–700 m (330–2,300 ft).
Polygonum striatulum is a perennial herb that spreads by means of underground rhizomes. Leaves are lanceolate, up to 35 mm (1.4 in) long, the leaves in the upper part of the plant decidedly larger than those closer to the ground. Inflorescences are at the top of the plant and also at the tips of branches, each with 2–6 white to pinkish flowers.
Leathery knotweed · Knotweed · Polygonum albanicum · Polygonum amgense · European knotweed · Oval-leaf knotweed · Austin's Knotweed · Prostrate knotweed · Narrowleaf knotweed · Bidwell's knotweed · Bolander's knotweed · Northern Knotgrass
Text excerpted from the Wikipedia article Polygonum striatulum by its contributors, under CC BY-SA 4.0; the excerpts are shared under the same licence.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.
