Polygonum arenastrum Jord. ex Boreau
Family: Polygonaceae
oval-leaf knotweed,  more...
[Polygonum aequale Lindm.,  more]
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Biopix  
Freely branching, homophyllous annual, prostrate and commonly mat-forming; lvs bluish-green, broadly elliptic to oval-oblong, obtuse or rounded, 5-20 נ3-9 mm, often deciduous in late season; ocreae 3-6 mm, bifid, eventually lacerate; mature perianth 1.8-2.6 mm, divided to about the middle, the segments with white to pink margins and flat, obtuse or rounded tip; achenes 1.5-2.3 mm, shortly included to shortly exserted, dark brown, striate- papillate, late season ones to 4 mm, olivaceous, smooth; 2n=40. Abundant weed of dooryards, sidewalks, and streets, native of Europe, now widespread in temperate N. Amer. (P. aviculare, misapplied)

Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.

©The New York Botanical Garden. All rights reserved. Used by permission.
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Barry Breckling  
Polygonum arenastrum image
Barry Breckling  
Polygonum arenastrum image
Biopix  
Polygonum arenastrum image
Biopix  
Polygonum arenastrum image
Barry Breckling  
Polygonum arenastrum image
Barry Breckling  
Polygonum arenastrum image
Biopix  
Polygonum arenastrum image
Barry Breckling  
Polygonum arenastrum image
Barry Breckling  
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