10 
rs 
. Spikelets in groups of two to six at each point of the main axis, 
less. (Cathestecum may be looked for here 
Tribe III. osterpaminm. (See page 25.) 
4. capri “aie off singly from the althmate branches at the 
5 
On 
. Flowering glumes of the perfect flower membranaceous and (in 
American species) awned. 
ribe IV. rristeciInem. (See page 30.) 
; Flow ering glumes of the perfect flower cartilaginous, farsi 
us and awnless or (in Eriochlea) with a short, 
straight awn -....-.--.- Tribe V. panicem. (See page 30.) 
or 
Tripe I.—MAY DE. 
Spikelets unisexual, the staminate forming a part of the inflo- 
rescence with the pistillate, or each in a separate inflorescence on 
the same plant; flowering glumes hyaline or much less firm in 
texture than the outer ones; axis of the female spikelet usually 
articulated. 
- A small tribe, numbering only sixteen species classed 
in seven genera. They are nearly all natives of the 
Tropics, abil in the Old World. Indian corn, or 
maize, is our best-known example of the Maydex. - 
KEY TO THE GENERA OF THE MAYDES. 
— 
3 Staminate spikelets in an upper, pistillate in a lower and dis- 
inet 
: Staminate spikelets above, the pistillate below in the same 
inflorescence TrrpsacuM 
i 
2 arts se age fclasy tesiatod, enveloped in bread, leaf-like 
minate spikes numerous in terminal pani- 
bo 
3 
: Pistillate spikes usually reduced to a single OS staminate 
spikes solitary 4. Corx 
ye 
‘ chereae sem axillary, fasciculate, distinct, igo of each 
eNO gg .' EvcHLaNA 
: Pistillate ata axillary, grown together, forming a compound 
spike with a much thickened, continuous 2 Zea 
ow 
de 
