W154 



DOUGLAS KNOTWEED 



Poly'gonum dougla'sii 



Flowers small (less than K in. long), 

 whitish or rose-colored, numerous, soli- 

 tary or several in the leaf axils, on 

 short, slender, jointed, soon-drooping 



stalks 



Outer flower parts (sepals) 5, petal- 

 like, erect, persistent; petals lacking; 

 stamens 8. 



"Seeds" (achenes) egg-shaped, 3-an- 

 gled, about % in. long, black, smooth, 

 shining 



Leaves alternate, reverse-lance- 

 shaped to linear-oblong, flat with entire, 

 rolled-under edges, practically stalk- 

 less, their bases jointed and attached 

 to bracts (stipules, or ocreae) 



Stipules sheathing the stem joints, 

 papery, 2-lobed and becoming irregu- 

 larly cut above 



Stems mostly erect, 4 to 21 in...high, 

 jointed, somewhat angled, ascending^ 

 branched from the base 



