KYLLINGA.—(1) Plant of K. pumila; (2) one-flowered spikelet on a piece of the rhachis, enlarged; (3) the same, more enlarged and open; (4) achene; and (5) section of same magnified.

EXPLANATION OF PLATE II.

HEMICARPHA.—(1) Plant of H. subsquarrosa, natural size; (2) a spikelet enlarged, with its bract; (3) magnified scale of the same; (5) a flower, with its single stamen and minute internal scale, magnified; (6) achene, magnified.

LIPOCARPHA.—(1) Upper part of plants of L. maculata, with spikelets; (2) diagram of a flower, representing the ovary between the two internal scales, a single stamen, the scale of the spikelet on one side, and the axis of the spikelet on the other; (3) scale of spikelet detached; (4) a flower with its two inner scales; (5) achene, magnified.

FUIRENA.—(1) Upper portion of plant of F. squarrosa, var. pumila; (2) scale of spike enclosing a flower; (3) open scale of same; (4) flower; (5) one of the scales and one of the bristles of the perianth; (6) achene, and (7) section of same.

EXPLANATION OF PLATE III.