Cannabis 



Urticaceae 



397 



50 



Map 810 



Humulus amen'canus Nutt. 



50 



Map 811 



Cannabis sativa L. 



~N 



Map 812 



Urtica procera Muhl. 



N. S. to Wyo., southw. to Fla. and Ariz. The western hop is sometimes 

 considered to be specifically distinct but is usually treated as a variety of 

 Humulus americanus. 



1973. CANNABIS [Tourn.] L. 



1. Cannabis sativa L. Common Hemp. Map 811. This species yields 

 a strong fibre which is extensively used for cordage. It was formerly sown 

 in northern Indiana for its fibre. The seed of this plant are much used 

 in commercial bird foods, and this accounts for its escape in all parts of 

 the state. The plant grows 6-10 feet high and produces an abundance of 

 seed; it might well be grown for winter food for birds, and people who 

 provide feed for birds during the winter months should be interested in 

 sowing enough hemp to produce a few sheaves of it to be used for this 

 purpose. Hemp is also the source of the narcotic hashish or marihuana, 

 and growing it in Indiana is now prohibited. 



This species prefers a moist, rich soil but I have found it in almost 

 all kinds of soils and locations. It is usually found in waste places, along 

 roadsides, streams and railroads, and infrequently in fallow fields and 

 open woods. In the Kankakee region it is frequent in low ground along 

 fences and on ditch banks. 



Nat. of Asia; naturalized from N. B. to Minn., southw. to Ga. and Kans. 



65. URTICACEAE Reichenb. Nettle Family 



Leaves opposite. 



Flowers in axillary panicles. 



Plants with stinging hairs, the whole plant more or less pubescent, generally 8-15 

 dm high; leaves generally with more than 15 pairs of teeth; achenes inclosed 



by the calyx 1974. Urtica, p. 398. 



Plants without stinging hairs, the whole plant glabrous, generally 3-7 dm high; 

 leaves generally with fewer than 15 pairs of teeth; achenes longer than the 



calyx 1984. Pilea, p. 399. 



Flowers in single, axillary spikes, these with or without axillary glomerules; plants 

 without stinging hairs, more or less pubescent throughout; achenes more or less 

 uncinate-pubescent 1990. Boehmeria, p. 400. 



