74 



THE INDIANA AVHKD BOOK. 



Fig. 41. (After Vasey.) 



31. AMARANTHUS SPINOSTS L. Spiny 



Ainanintli. lied or Spiny Careless 

 Weed. Sol dier- weed. (A. I. 1.) 

 Stem more branched and spreading. 

 1-4 feet high, often becoming red in age ; 

 leaves with a pair of stiff, sharp spines, 

 i-1 inch long, in the axils. Flowers in 

 both axillary clusters and terminal droop- 

 ing spikes. Seeds round. lens-shai>ed. 

 dark, very small, shining. (Fig. 41.) 



Common in waste places, borders 

 of fields, alleys and roadsides in the 

 southern two-thirds of the State. 

 June-Oct. Occurs especially in and 

 nofir towns and cities along the Ohio 

 and Wabash rivers Remedies the 

 same as for the common pigweeds. 



32. AMARANTHUS BLITOIDES Wats. Pros- 



trate 1'igweed. Low Amaranth. 

 (A. I. 2.) 



Stem prostrate or spreading, pale 

 green, 6-24 inches long: leaves spoon- 

 shai>ed or narrowed below into slender stalks. Flowers of this and the 

 next species hi small axillary clusters which are shorter than the leaf- 

 stalks; bracts awl-shaped, but little longer than the sepals. Fruit a utri'cle 

 opening by a lid as in the other species. Seeds rounded, lens-shaped. 1/16 

 inch in diameter dark brown, shining. 



Frequent along railways and in waste places in cities and 

 towns. June-Oct. Spreading like purslane and often forming 

 mats. Remedies the same 



33. AMARANTHUS GB.ECIZANS L. Tumble-weed. White I'igweed. (A.I.I.) 

 Stem erect, bushy branched, whitish. (!-24 inches tall ; leaves oblong, 

 spoon-shaped, slender stalked. Flowers as in the prostrate pigweed, the 

 bracts much longer than the sepals. Seeds one-half as huge and with a 

 distinct wing-like border. 



Frequent throughout the State along roadsides, railways and in 

 old fields. June-Oct. The leaves fall away in autumn and the 

 branches bend in, forming a globular mass which is broken off and 

 rolled along before the wind, thus widely scattering the seeds. One 

 such weed, 5 feet 7 inches in circumference, was seen in Vigo 

 County. From the Russian thistle, which has similar habits of 

 seed distribution, this true tumble-weed may be known by its much 

 wider leaves and small, round and shining seeds. Remedies the 

 same as for the rough pigweed. 



