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EXPLANATION OF PLATES. 
kelet showing back of the first and third glumes ; 6, a spikelet 
in fruit, showing the first and third glumes and the broad win g-like 
margins of the palea of the third glume; f, the same as e, seen from 
the other side; g, dorsal view of the fourth glume in fruit. 
PLATE 11.—Izophorus pringlei: a, mature spikelet showing dorsal views of the first 
and third glumes and the broad wing-like expansions (al) of the palea 
of the third glume; b, the same seen from the other side; e, palea of 
the third glume at maturity; d, dorsal view of fourth glume. 
PLATE III.— Paspalum scabriusculum : a, a portion of the axis of one of the racemes 
earing six spikelets; b, a spikelet showing back of the second or 
flowering glume; c, spikelet showing back of the empty glume; d, the 
empty glume. 
PLATE IV.— Panicum biglandulare: a, spikelet seen from the side; b, the same, show- 
ing the first and third glumes, upon the latter the two glands are indi- 
same, showing the palea partly surrounded by ihe glume, and the 
stigmas. 
PLATE V.—Ichnanthus lanceolatus: a, spikelet from the side; b, spikelet showing 
base of the first and back of the third glumes; e, fourth or flowering 
glume; d,spikelet with the first glume removed, the third glume 
partly inclosed by the second; f, base of flowering glume. 
