74 MEMOIRS FROM THE DEPARTMENT OF BOTANY OF COLUMBIA COLLEGE. 



[Plate 24.] 

 24. Polygonum Careyi Olney. 



Polygonum Careyi Olney, Proc. Prov. Frank. Soc. 1: 29 (1847); A. Gray, Man. 

 386; Meisner in DC. Prodr. 14: 111; Wood, CI. Bk. Ed. 41, 368; Am. Bot. & Fl. 283. 



Annual, pubescent and glandular throughout, usually slender. Stem erect, 6-12 

 dm. tall, simple or sparingly branched above, rough with stiff and glandular 

 hairs, channeled; leaves varying from oblong-lanceolate to linear-lanceolate, 4-27 

 cm. long, .2-4.6 cm. broad, acuminate at both ends, hispid, especially about the 

 midrib, ciliate, sparingly punctate, short-petioled or subsessile, arising from about 

 the middle of the ocreae, the uppermost often nearly linear; ocreae cylindric or 

 funnelform, .8-1.7 cm. long, somewhat hispid, fringed with long bristles; inflorescence 

 paniculate, the ultimate divisions very narrow, spicate racemes ; racemes linear or linear- 

 oblong, 2-6 cm. long, .4-. 7 cm. broad, loosely flowered, drooping; ocreolae continuous, 

 funnelform, oblique, 2-3 mm. long, sparingly hispid, fringed with stout bristles ; pedi- 

 cels at length 3-4 mm. long, somewhat angled; calyx about 2 mm. long, purplish, 

 five-parted to below the middle, the segments strongly nerved and obtuse; stamens 

 five or sometimes eight, included; style two-cleft to the middle, 1-1.5 mm. long, 

 included,; achene lenticular, 2-2.5 mm. long, broadly obovoid, strongly biconvex, short- 

 pointed, black, very smooth and shining. 



Maine to northeastern Pennsylvania and southern New Jersey. 



