Mackenzie: Notes on Carex 443 



Bracts not elongate; scales one half length of body of perigynia ; culm-angles 



strongly serrulate. 



C. cephiiloidea. 



Some of the bracts elongate; scales equaling body of perigynia or longer; culm- 

 angles roughened beneath head only. 

 Scales equaling body of perigynia ; beak as long as body of perigynia. 



C. agglomerate. 

 Scales equaling or exceeding perigynia; beak shorter than body of perigynia. 



C. Muklmbergii, 



Carex agglomerata is the plant referred to Carex cephaloidea at 

 page 52 of the Manual of the Flora of Jackson County, Missouri. 

 The type-specimen was collected by B. F. Bush at Courtney, 

 Jackson County, Missouri, no. 1718, on May 25, 1902, at which 

 place it is rather common in the woods along the Missouri River 

 bluffs, where it was also collected by myself on May 23, 1896. 

 The same species has been collected by E. S. Steele near Wash- 

 ington, D. C, June 5, 1901. It doubtless occurs in the interme- 

 diate territory, but the almost total absence of collectors in that 

 region easily accounts for its non-appearance in collections. 



