3 John Mallory Bates 



range given in Appendix to his Manual, ist ed. I find one 

 sheet in the Seminar Herbarium contributed and named by 

 the late Wm. Clebourne of Omaha, before C. bushii was 

 known. The label reads thus : " Cyperus esculentus L. 

 Sand flats south of Lake Manawa. Aug. 8, 1902." It is 

 a fine specimen of C bushii Britton, but we cannot claim it, 

 as Lake Manawa is wholly in Iowa. Collectors in that part 

 of the state will confer a great favor by hunting for it in 

 similar situations.^ 



5. C. acuminatus Torr. and Hook. Annual ; sand bars and 



other saturated soil. Valentine; Atkinson; Ewing (Bates) ; 

 Minden ; Edgar, Clay Co. ; Lincoln ; Franklin ; Red Cloud ; 

 Loup City, Sherman Co. (Uni.). 



6. C. esculentus L. Perennial ; in sandy soil, wet and dry. 



Kennedy ; Wood Lake, Cherry Co. ; Ewing ; Callaway ; Red 

 Cloud (Bates); Lincoln; Norfolk, Madison Co.; northern 

 Holt Co. (Uni.). 



7. C. erythrorhizos Muhl. Annual ; in wetter soil than the last ; 



not common. Ewing ; Lincoln ; Columbus ; St. Paul 

 (Bates) ; Lincoln; Norfolk; northern Holt Co. (Uni.). 



8. C. engelmanni Steud. Annual ; only in saturated soil. Ken- 



nedy, Cherry Co. (Bates). This rare species is in the 



1 Since writing up Cyperus schweinitzii and C. bushii, I have written to 

 Dr. Rydberg, asking for the data upon which bushii was accredited to 

 Nebraska in Britton's Manual. He kindly reported several sheets from 

 the University collection and my own. I have gone over again all our 

 material and find none, not even the Lake Manawa specimen, that bear 

 out the contention. Ours have all degrees of roughness of culm and leaves, 

 but none " smooth " according to the requirements of both Britton and 

 Small. We have all forms of scale, cuspidate, acuminate and barely acute, 

 chiefly 9-nerved. I am convinced that either this material should be 

 included under one species not more variable than a thousand others, or 

 else that we at least can lay no claim to it. Our specimen from Lake 

 Manawa, Iowa, has lightly scabrous culms above and leaves strongly and 

 finely serrulate and lightly scabrous above ; scales strongly cuspidate, so 

 that it can not come under the description of bushii. We have none with- 

 out some serrulation on the leaves, and only two sheets that are without 

 cuspidate scales. We find on the same plant scales obtuse, acute and 

 cuspidate. 



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