90 URTICACEAE (NETTLE FAMILY) 



be grubbed out. When tillage is impracticable, close and per- 

 sistent cutting will prevent seeding and starve the roots. 



FALSE NETTLE 



Boehmbria cylindrica, Willd. 



Native. Perennial. Propagates by seeds. 



Time of bloom : July to September. 



Seed-time : September until cut off by frost. 



Range: Quebec and Ontario to Minnesota, southward to Florida 



and Kansas. 

 Habitat : Moist soil ; waste places. 



Stems six inches to two feet or more in height, erect, round, 

 smooth or sometimes slightly hairy, simple or with few branches. 

 Leaves long ovate to lance-shaped, 

 pointed, three-nerved, sharply toothed, 

 much resembling those of the nettles 

 but without stinging hairs ; petioles 

 long, slender, smooth. Flowers may 

 be dioecious or the two kinds inter- 

 mixed on the same plant, more often 

 the latter, but in either case they are 

 in densely crowded, elongated, axillary 

 spikes, often leafy at the tips ; the 

 sterile ones very like those of the 

 True Nettle, but the fertile ones having 

 an urn-shaped persistent calyx en- 

 closing the ovary, and later enfolding 

 the ripened achenes. (Fig. 51.) 



Means of control the same as for 

 common Nettles. As they are with- 

 out stings, small areas may be readily 

 hand-pulled. 



FIG. Sl.-False Nettle (Boek- 



meria cylindrica). X I Rbmex Patientia, L. 



Introduced. Perennial. Propagates by seeds. 

 Time of bloom : June to August. 

 Seed-time: July to September. 



