BUCKWHEAT FAMILY 



12. Polygonum Careyi Olney. Can 

 Persicaria. (Fig. 1329.) 



Polygonum Careyi Olney, Proc. Providence Franklin 

 Soc. i: 29. 1847. 



Annual, rough-glandular throughout, stem 

 erect, i-3 tall, simple or sparingly branched 

 above. Leaves oblong-lanceolate or linear-lanceo- 

 late, the uppermost nearly linear, 2 / -n / long, 

 short-petioled or nearly sessile, acuminate at both 

 ends, hispid on the midrib, ciliatc, sparingly punc- 

 tate; ocreae cylindric, sparsely hispid, fringed with 

 long bristles; racemes several, narrow, terminal, 

 loosely-flowered, drooping, I '-2^' long; calyx pur- 

 plish ; stamens 5 or sometimes 8; style 2-parted to be- 

 low the middle; achene lenticular, broadly ovoid or 

 obovoid, i#"-i>" long, short-pointed, thick, 

 smooth and shining. 



In marshes, Ontario to Rhode Island, New Jersey 

 and Pennsylvania. Ascends to 2000 ft. in Pennsylva- 

 nia. Also in Michigan. July-Sept. 





13. Polygonum setaceum Haldxv. 

 Bristly Persicaria. (Fig. 1330.) 



Polygonum sttacfiim Haldw. ; KI1. Hot S. C. & Ga. 



1:455. 1817. 



Perennial, glabrous or strigose- pubescent 

 above, stem 2-4 high, erect, simple or spar- 

 ingly branched; leaves lanceolate or oblong- 

 lanceolate, 2 / -9 / long, mostly short-petioled, 

 acuminate at both ends, ciliate, inconspicuously 

 punctate; ocreae cylindric, long, strigose, 

 fringed with very long bristles; racemes few, 

 terminal, i'-2%' long, erect, linear-oblong, 

 sometimes geminate, rather loosely flowered; 

 calyx white or pink; stamens 8; style 3-parted 

 to below the middle; achene 3-angled, oblong or 

 obovoid, short, thick-pointed, #"-2" long, 

 minutely reticulated and rather dull, or smooth 

 and shining. 



hi swamps, southern Missouri to Louisiana, east 

 to North Carolina and Florida. June-Sept 



14. Polygonum Opelousanum Riddell. 

 Opelousas Persicaria. ( Fig. 1331.) 



Polygonum. Opelousanum Riddell; Small, Bull. 

 Torr. Club, 19: 354. 1892. 



Perennial, glabrous or nearly so throughout, 

 stem slender, erect or ascending, sparingly or 

 considerably branched, i-3 tall, becoming 

 woody below. Leaves linear or linear-lanceo- 

 late, iJ^'-S' long, sessile, ciliate; ocreae cylin- 

 dric, strigose, fringed with long bristles; spicate 

 racemes panicled, erect, often geminate, #'-2' 

 long, not densely flowered; calyx white, pedi- 

 celled, s-parted to below the middle; stamens 8 

 or fewer, included; style deeply 3-parted; achene 

 3-angled or rarely 4-angled, broadly ovoid or 

 obovoid, }" long, black, smooth and shining. 



Missouri to Louisiana, Texas and Mexico. July- 

 Sept. 



36 



