232 Harshberger—A Study of the Fertile Hybrids 
itself under adverse conditions it reverted to Zea canina, that 
is, the same plant had a wild and a cultivated state.”’ 
Some time elapsed after the receipt of the above letter, 
when one was addressed to Professor Segura, who replied in 
Spanish under date of July 2, 1896: 
“Tn reply to your letter the manifest which I sent you with 
the bags of the seeds explained, that one bag contained seeds 
of asesé (Euchlena mexicana), another, seeds obtained by 
hybridizing Euchlena mexicana with common maize. In 
consequence, that which you term Zea canina Watson is not 
distinct, but a hybrid of asesé and maize. To obtain this 
product, which is known in Guanajuato as ‘maiz de coyote,’ 
you must sow three grains of Euchlena, and at a distance to. 
prevent crowding of the plants, three kernels of maize. Asa 
result of this sowing in the month of July, the teosinté 
commences to form its floral peduncles, which should be cut 
off immediately after it appears [emasculation]. In August 
when Indian corn flowers, the teosinté is pollinated with pollen 
of corn.’ The resulting kernels do not show any modifica- 
tion of their form. The succeeding year upon sowing these. 
kernels, a plant of early habit will result showing in the 
small sized ears, qualities produced by the blending of common 
maize and teosinté.”’ 
Later, on visiting Mexico in the summer of 1896, the writer 
procured plants and ears of Luchlena and the hybrids, and 
Professor Segura very kindly gave him permission to publish 
the results of the inquiry, using in addition the information 
which he was so generous as to put at the writer’s disposal. 
It might be stated, before passing to a consideration of the 
1 Jt should be noticed here that the two plants are moneecious and protandrous ; 
the order of flowering at Mexico is as follows according to Professor Segura: 
male flowers of teosinté, then female flowers of that plant and male flowers of 
corn produced synchronously, then female flowers of maize, so that the physio- 
logical adjustments of both plants preclude the use of pollen of Zuchk/ena in the 
fertilization of maize. 
