EXPLANATION OF PLATE I. 



CYPERUS. (1) Small plant of C. diandrus; (2) a spikelet magnified ; (3) a 

 piece of the rhaehis with one scale enclosing its flower; (4) a separate 

 flower more magnified. (5) C. erythrorhizos, a spikelet niagnifie'd ; the 

 lower scales and flowers have fallen, showing tin.' small internal scales of 

 the section Papyrus, formed of the winged margins of the joints of the 

 rhaehis detached ; (G) a separate one, more enlarged ; (7) a flower; (8) an 

 acliene, cut in two. (9) C. dentatus, a piece of the rhaehis of a spike 

 with the lower part of one scale, showing how it is decurrent on the joint 

 beneath (cut across) to form scale-like wings. 



DULICHIUM. (1 ) Upper part of a plant of D. spathaceum ; (2) part of a 

 spikelet somewhat enlarged ; (3) piece of rhaehis, and one scale decurrent 

 on the joint beneath ; (4) magnified flower. 



KYLLIXGA. (1) Plant of K. pumila; (2) one-flowered spikelet on a 

 piece of the rhaehis, enlarged; (3) the same, more enlarged and open; 

 (4) acheue; and (5) section of same magnified. 



