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. — (6) Summit of a flowering stem of S. reticularis; (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-lolied double cup 

 underneatli. 



CAREX. — (11) Plant of C. j^auciflora ; (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. Jamesii, upper part of flowering 

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

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

 gynium cut aAvay to show the contained achene and style. 



