Xanthium strumarium var. canadense (Mill.) Torr. & A.Gray

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NEW YORK BOTANICAL GARDEN
03199951
Photoperiodic responses of this race are reported under strain no. 2/	by
P. M. Ray and W. E. Alexander, Amer. Jour. Bot., Vol. S3, pjff. 810 ,	1966.
HERBARIUM OF THE UNIVERSITY OF MICHIGAN
Photoperiodic Responses of Races of Xanthium strumarium
Xanthium strumarium L., complex ( see annotation by Doris
Love)
Grown in greenhouses of the University of Michigan Botanical Gardens,
Dixboro, Washtenaw County, Michigan.
Specimen prepared 25 Sept. , 19 6 ^ by W. E. Alexander and B. G. Kang
No. lg
Seed originally collected	at	Shore	Of	Lake Erie
at end of Huron River Dr. , ^ mi. E. of Rockwood,
by	Wayne	Co. , Mich.
Edward Voss, collector. (4-11016 in Voss collect-
and assigned seed lot no. ion at Univ. of Mich. Herbarium.)
62-s
This plant is from the first generation derived from the above seed.
03199951