EXPLAXATIOy OF PLATE I. 



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

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

 flower more magnified. — (5) C. ervthrorhizos, a spikelet magnified ; tlie 

 lower scales and flowers have fallen, showing tlie small internal scales of 

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

 rhachis detached ; (6) a separate one, more enlarged ; ( 7 ) a flower ; (8) an 

 achene, cut in two. — (9) C. dentatus, a piece of the rliachis of a s|)ike 

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

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



DULICHIUM. — (1) Upper part of a plant of I), spatliaceum ; (2) part of a 

 spikelet somewhat enlarged; (3) piece of rhacliis, 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 rhachis, enlarged; (3) the same, more enlarged and open; 

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



