294 ONAGRACEAE (EVENING PRIMROSE FAMILY) 



slim petiole; when growing in mucky ground, they are smaller, 

 nearly sessile, blunt-pointed, and reddish. Flowers axillary, sessile, 

 solitary, scarcely a tenth of an inch broad ; they have a top-shaped 

 calyx with four pointed triangular lobes, and sometimes four small 

 reddish petals, though these are often wanting, particularly in 

 floating plants ; stamens four and stigma four-parted ; ovary 

 four-celled. Capsule four-sided and four-celled, flat at the top, 

 containing many very fine, wrinkled, brown seeds. 



Means of control 



Only by digging or hand-pulling can this obnoxious little plant 

 be removed, and the work needs to be done early, before the first 

 development of seed. 



GREAT WILLOW-HERB 



Epildbium angustifdlium, L. 

 (Chamcenerion angustifolium, Scop.) 



Other English names: Fireweed, Spiked 



Willow-herb. 



Native. Perennial. Propagates by seeds. 

 Time of bloom: July to August. 

 Seed-time: August to September. 

 Range: Labrador to Alaska, southward to 



North Carolina and Kansas, in the Rocky 



Mountains to Arizona, and on the Pacific 



Coast to California. 

 Habitat : Low grounds and thickets ; land 



that has been newly cleared or burnt over. 



Stem two to six or more feet in height, 

 somewhat woody, rather stout, erect, simple 

 or branched from the base, usually reddish, 

 smooth or sometimes finely hairy above. 

 Leaves alternate, narrow lance-shaped, thin, 

 entire or minutely toothed, pale beneath, 

 with very short petioles and pinnate veins 

 united in marginal loops. Flowers in large 

 terminal racemes, purple, magenta, pink, or 

 sometimes white, very showy; petals four, 

 rounded and entire, with twice as many sta- 

 angustifolium). x ?. mens and an elongated pink style with four- 



