Xanthium strumarium var. glabratum (DC.) Cronquist

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03200115
HERBARIUM OF THE UNIVERSITY OF MICHIGAN
Photoperiodic Responses of Races of Xanthium strumarium
Xanthium strumarium L., complex
Grown in greenhouses of the University of Michigan Botanical Gardens,
Dixboro, Washtenaw County, Michigan.
Specimen prepared 26 0 C t. , 19 6^4-by W. E. Alexander and B. G. Kang
No. I4.2I
Seed originally collected ~J Jan# ?	at	111.	Union	Co	.
cross Mississippi R. from Cape Grirarflesn, Mo.
by
Don Fnrrar
and assigned seed lot no.
6;-29
This plant is from the fir S ti
generation derived from the above seed.
Photoperiodic responses of this race are reported under strain no. 60	by
P. M. Ray and W. E. Alexander, Amer. Jour. Bot., Vol. 53, pp. ¿10 f	1966.
03200115