142 AMERICAN MIDLAND NATURALIST 



mm. high. Male bracts white, broad, obtuse, entire. Female 

 bracts white, the outer with a brown spot, narrow, acute, entire. 

 This species is easily differentiated from its allies by the 

 characteristic outline as well as pubescence of its leaves, and by 

 its tall, few-headed staminate plants. Its home is the high, rolling 

 prairie, and it was collected by the writer in a grassy cut, on 

 both sides lined in profusion with Eleagnus argentea, 3 or 4 feet 

 high, on the upper middle plateau of Butte, Benson County, the 

 type specimen dated June i, 19 13. 



Chamaesyce glyptosperma var. integrata var. nov. 

 Marginibus foliorum integris. 

 Plant with entire leaf margins. 



Collected at Leeds, Benson County, by the writer, on Aug. 

 20, 1906. 



Amarella theiantha var. lactea var. nov. 



Corolla albido-flavescens. 



Corolla ochroleucous. In the type the color of the tube is 

 a bright sulphur-yellow, and of the lobes white. 



In low gravelly prairie, at Towner, McHenry County. 



Amarella theiantha var. livida var. nov. 

 Lobi corollae obscure lividi. 

 Corolla lobes of a dull bluish color. 



On the lower end of hillsides, occasionally at Butte, Benson 

 County. 



Epilobium adenocaulon var. pseudocoloratum var. nov. 



Caulis in aestate posteriore suboles basilares subsessiles 

 evolvens; folia ampla, membranacea, lanceolata, serrulata, con- 

 spicue petiolata; petioli alati. 



Stem developing subsessile basal rosettes during the latter 

 half of the summer; leaves large, membranous, lanceolate, serru- 

 late, distinctly perioled; petiole winged. 



In a cold bog along a rill in the woodland encircling Pleasant 

 Lake, Benson County, August 14, 191 1. 



Cirsium nebraskense var. formidolosum var. nov. 



Spinae foliorum 7 mm. longae et lobi profundi. 

 Leaf spines 7 mm. long, even stouter than the spines of C. 

 ochrocentrum. Leaves as in var. discissum, which is the prevalent 



