ee ay ss 
AGRICULTURAL SPECIES OF BENT GRASSES. YS} 
absence from domestic seed of seeds characterictic of imported seed 
-and the absence from imported seed of seeds characteristic of domes- 
tic seed, afford additional evidence of the origin of the seed in ques- 
tion. It was by the presence of certain kinds of seeds and by the 
absence of others that the 27 samples of imported redtop seed were 
~®determined to be of American origin. 
Se 3 
Panicum sp.(P.lanuginosum? 
Linum virginianun 
aS 
Koellia flexuosa Plantago rugelii Legouzia perfoliata Rudbeckia. hirta 
Fic. 10.—Seeds characteristic of American-grown redtop seed and Rhode Island bent seed (enlarged and 
natural size): 1, Panic grass (Panicum sp.); 2, timothy (Phleum pratense); 3, Fimbristylis laxa; 4, Fim- 
- bristylis autumnalis; 5, club rush (Scirpus sp.); 6, sedges ( Carex spp.); 7, peppergrass (Lepidium virgini- 
cum); 8, peppergrass (Lepidium apeialum); 9, cinquefoil (Potentilla monspeliensis); 10, wild yellow flax 
(Linum virginianum); 11, rattlebox (Ludwigia alternifolia); 12, bugleweed (Lycopus virginicus); 13, moun- 
tain mint ( Koellia fleruwosa); 14, black-seeded plantain (Plantago rugelii); 15, Venus’s-looking-glass (Le- 
gouzia perfoliata); 16, black-eyed Susan (Rudbeckia hirta). 
Some of the lots of seed imported as South German mixed bent 
consisted largely of redtop, and in some instances this redtop seed is 
strongly suspected of being American seed that had been added to 
the bent seed. ‘This is consistent with the fact that 18 of the 27 
samples of imported American-grown redtop seed were brought to 
this country as South German mixed-bent seed under some trade 
name in common use, only 4 of the total number being entered as 
redtop seed. 
