11)1) 



firm and solid, 3-7 cm. lon^, 2.5-5 cm. lliick; spores lilcul-hiiff* 

 or pale pinkish buff* in mass, ellipsoid, smooth, 6-« X 45-5 

 microns; cystidia none. 



Collected on the ground in dry ifrassland at 'rolland, Mldora, 

 Sulphide, Nedcrland, Rollinsvillc, Plainview, Pine (Jlade, 

 Pactolus, and Crescent, Colorado. Alt. 6,000-9,000 ft. June to 

 September. Edible. 



The plant is easily recognized by its size, firmness, and the 

 habit of forming fairy rings.* It is worthy of note that the 

 spores from these specimens are not pure white in mass as stated 

 in the original description. 

 Pknnsylvania State College 



A NEW HYBRID CAREX FROM THE MIDDLE 

 WESTERN STATES 



By Ira W. Clokey 



While collecting specimens of Carex impressa (Wright) Mac- 

 kenzie in Macon Co., Illinois, in 1915, a clump of a peculiar form 

 of Carex was found. On investigation these plants were found to 

 combine characteristics of both Carex impressa (WVight) Mac- 

 kenzie and Carex lanuginosa Michx. Owdng to this combination 

 of characteristics and to the almost sterile condition of the plants 

 the hybrid origin was indicated. The plants seemed to prop- 

 agate entirely by numerous very tough rootstocks that were 

 4-6 incties under ground. Mr. K. K. Mackenzie kindly exam- 

 ined specimens and description of these plants and found them 

 to be an exact match for three specimens from Indiana which he 

 had described but never published. Mr. Mackenzie had 

 reached the same conclusion as to the hybrid origin and had 

 selected the same parents. 



Carex impressa (Wright) Mackenzie X Carex lanuginosa Michx. 



hyb. nov. 



Grows in small clamps from a stout rootstock; the fertile 

 culms from 5-8 dm. tall, stout, erect, sharph- angled, smooth or 

 minutely rough on the angles above. Leaves 4-7 mm. wide, flat 



* RidgAvay, Robert. Color standards and color nomenclature. 1912. 



