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OFFICE OF INVESTIGATIONS IN ForEST PATHOLOGY, 
Bureau of Plant Industry, Washington, D. C. 
BUTOMUS UMBELLATUS ON THE ST. LAWRENCE RIVER. 
CLARENCE H. KNOWLTON. 
WuiLeE collecting plants along the St. Lawrence River at Ste. 
Angéle de Laval, opposite Three Rivers. Quebec, the last day of July, 
Mr. Edward B. Chamberlain and I were much surprised to find 
in the swampy land near the shore a striking endogenous plant that 
neither of us had seen nor heard of before. Good specimens were a 
meter tall, with an umbel of large pink flowers, veined with darker 
red. At the base was a short horizontal rootstock with a large 
cluster of ensiform leaves. 
We soon discovered that the plant did not fit the ordinary key to 
the endogens, for the flower had three colored sepals, three larger 
petals, nine stamens, and six separate carpels. 
Later investigation at the Gray Herbarium showed us that this 
handsome plant was Butomus umbellatus L. of the small family 
