A Study of the Fertile Hybrids Produced by 
Crossing Teosinté and Maize. 
(WITH PLATE XXII.) 
By Joun W. HarsHBErGER, Pu. D. 
This study is presented as an appendix to the monograph 
on maize, which appeared in “‘ Contributions from the Botan- 
ical Laboratory, University of Pennsylvania” (Vol. I, No. 2, 
p. 75): 
Professor A. Dugés sent in 1888 to the Cambridge Botan- 
ical Garden several maize plants which he had collected at 
Novo Leon, Mexico. Seeds from these plants were sown at 
that garden, and the plants which resulted were studied by the 
late Sereno Watson.! Small ears and kernels of the second 
generation were procured from Cambridge, Mass., and planted 
in Philadelphia. The flowers and fruits obtained from the 
plants thus grown were described and figured in the mono- 
graph mentioned above. Later, inquiry was made of Dr. 
Dugés concerning his discovery, and the following letter in 
French, dated September 22, 1895, and mailed from Guana- 
juato was received: 
“The maize, which Dr. Sereno Watson named Zea canina 
from the examples which I sent him, is known in Mexico as 
‘maiz de coyote’ (Lupus /atrans), ‘teosinte,’ ‘asesé’ or ‘ café 
de Tabasco.’ We consider it to be Euchlena luxurians, Euch- 
lena mexicana or Reana luxurians. Yt appears that it has 
been cultivated in Europe and also in Mexico, where it has 
been grown by Professor José C. Segura, director of the 
School of Agriculture, City of Mexico. This botanist dis- 
covered at the end of three years of careful cultivation in 
good soil, that it changed to Zea mays, and if abandoned to 
1 Watson, Proceedings American Academy of Arts and Sciences, xxvi, p. 158. 
(231) 
