136 MEMOIRS FROM THE DEPARTMENT OF BOTANY OF COLUMBIA COLLEGE. 



[Plate 55.J 

 55. Polygonum polygaloides Meisner. 



Polygonum polygaloides Meisner in DC. Prodr. 14: 101 (1856); S. Watson, Bot. 

 Calif. 2: 12. 



Annual, slender, glabrous, light green or straw-colored. Stem erect, 1-2 dm. long, 

 simple or more or less corymbosely branched, slightly flexuovis, obscurely four-angled ; 

 leaves linear or narrowly linear, .5-3 cm. long, .1-2 mm. broad, acute, rather strict, artic- 

 ulated to the ocreae ; ocreae funnelform, 3-5 mm. long, oblique, at first two-parted, soon 

 lacerate ; inflorescence axillary, the clusters several-flowered, confined to the ends of the 

 branches, nearly contiguous and forming a terminal raceme; bracts usually oblong, 

 obtuse, surrounded with scarious wings, more or less imbricated; pedicels 2-2.5 mm. 

 long; calyx 2 mm. long, five-parted to near the base, white or pinkish, the segments 

 lanceolate with a dark rib, the outer ones longer than the inner; stamens eight, in- 

 cluded; style three-parted to below the middle, included; achene triquetrous, ovoid, 

 1-1.5 mm. long. 



Washington and Oregon to Montana. 



