EXPLANATION OF PLATE V. 



CLADIUM. (1) Summit of a plant of C. mariscoides ; (2) detached spike- 

 let; (3) same, open, showing a staminate and a perfect flower; (4) the 

 nut-like achene, and (5) the longitudinal section of the same. 



SCLERIA. (G) Summit of a flowering stem of S. retictilaris ; (7) three 

 spikelets from a cluster, the middle one pistillate, the lateral ones stami- 

 nate ; (8) staminate spikelet displaying four male flowers, the filaments 

 of two of them having lost their anthers ; (9) pistillate spikelet display- 

 ing a single pistillate flower; (10) achene with the 3-lobed double cup 

 underneath. 



CAIIEX. (11) Plant of C. pauciflora ; (12) a staminate flower with its 

 scale; (13) scale, and (14) mature pistillate flower, in its perigynium; 

 (15) cross-section of perigynium and of the contained achene ; ( 16 ) achene 

 on its stalk, style and stigmas. (17) C. Jcmcsii, upper part of flowering 

 plant; (18) the spike enlarged; (19) a stamiuate flower audits scale; 

 (20) pistillate flower in its perigynium ; (21) the same with half the peri- 

 gynium cut away to show the contained achene and style. 



