160 A TEXT-BOOK OF GRASSES 
palea, and a fertile floret, the latter all hyaline. The 
staminate spikelets are in pairs on a slender rachis. The 
spikelet consists of 2 coriaceous glumes and 2 florets with 
stamens, the lemmas and paleas being hyaline. Besides 
the terminal inflorescence there are usually in the axils 
of the leaves others that may be reduced to a single spike. 
One species, 7’. dactyloides L., a coarse perennial found 
through eastern and southern United States, is an excel- 
lent forage grass, sometimes called gama-grass. A few 
other species are found in Mexico. 
201. Euchlena Schrad—Teo- 
sinte. The staminate flowers are 
in a terminal panicle while the 
pistillate are in spikes in the axils 
of the leaves. The staminate 
spikelets are similar to those of 
Tripsacum. The spike of pistillate 
spikelets breaks up at maturity 
into rhomboidal seed-like joints. 
The styles are very long and 
protrude from the top of the 
inclosing leaf-sheath. The best 
known species is E. mexicana 
Schrad. (Fig. 11), a native of 
Bite canen cis, Moree. The + Con 
a Distillate inflorescence, X ¥4 resembling corn, cultivated in the 
ee by, Sec. Bull southern United States as a for- 
age plant, chiefly for green fodder. 
There are 1 or 2 other species in Mexieo and Central 
America. A hybrid between Euchlena and Tripsacum is 
described by Collins and Kempton. The pollen was fur- 
nished by a variety of Euchlena from Durango, Mexico 
(Journ. Wash. Acad. Sci. 4: 114. 1914). 
