644 Piper : Agropyron tenerum and its allies 



Agropyron tenerum ciliatum Scribn. & Smith, U. S. Dept 



Agr. Div. Agrost. Bull. 4: 30. 1897. 



The type of this is from Duluth, Minnesota, collected by Dr. 

 Geo. Vasey, August i, 1880. It is characterized by rather thin 

 and smooth leaf-blades 4-6 mm. broad, and pubescent sheaths. 



The rachilla of this type is quite hairy, but it may here be re- 

 marked that the character of hairy sheaths is not constantly asso- 

 ciated with that of hairy rachilla. Several of the specimens re- 

 ferred to A. ciliatiun by Scribner & Smith on account of the hairy 

 sheaths have appressed-puberulent rachillae. 



The name ciliatiim is preoccupied in A. Richardsouii ciliatum 

 Scribn. & Smith, U. S, Dept. Agr. Div. Agrost. Bull, 4: 29. 

 1897. 



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Agropyron pseudorepens Scribn. & Smith, U. S. Dept. Agr. Div. 

 Agrost. Bull. 4: 30. 1897. 



No type of this species was indicated either in the original 

 publication, or in the herbarium, by its authors. The first cited 

 specimen, and therefore the type, is from Texas, collected by 

 Neally in 1889. This is quite the same as the type of A, tenerwn^ 

 with slightly longer and less involute blades, and a rather loose 

 spike. 



The specimen from which the^^. sgz (U. S. Dept. Agr. Div. 



Agrost Bull. 17 :) was drawn, is Rydberg's 2018 from Kearney, 



Nebraska. This has flat blades, 4-7 mm. broad, and rather stout 



spikes 10-12 cm. long. The rachilla and the callus of this are 

 hirsute. 



Neither of these specimens have rootstocks, nor extra- vaginal 

 innovations, nor, indeed, do any of the specimens cited in the 

 original description. 



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Agropyron pseudorepens magnum Scribn. & Smith, U. S. Dept. 



Agr. Div. Agrost. Bull. 4: 30. 1897. 



The type specimen is Rydberg's 2^01 from Enterprise, Col- 

 orado, collected August 19, 1895, It is characterized by its 

 robust size, 1-1.5 m. high, broad flat leaves, stout spikes and large 

 spikelets. These differences may all be due primarily to vegeta- 



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tive vigor The rachilla is appressed-puberulent. 

 Agropvrox Novae-Angliae Scribn. in Jones, Contr. Bot. Ver- 

 mont 8 : 103. 1903. 



