69 CLASS XX. ORDER IT. 



staminate : calyx : corol : seed 1, pedicelled ; the pe- 

 dicels surrounded at the base with long hairs resembling 

 egret. 



Spar gaiiium. Staminate flowers ament roundish : 

 calyx 3-leaved : corol 0. Pistillate flowers calyx 3-lea- 

 ved : corol : stigma 2-cleft ; drupe juiceless, 1 -seeded. 



Zea. Staminate flowers- calyx-glume 2-flowered, 

 awnless : corol glume awnless. Pistillate flowers calyx- 

 glume 2-valved : style 1, filiform, pendulous : seed sol- 

 itary, immersed in an oblong receptacle. 



Carex. Aments imbricate (usually in cylindric spikes.) 

 Staminate flowers calyx"-scales solitary : corol 0. Pistil- 

 late flowers calyx-scales solitary : corol inflated, mon- 

 opetalous, 2-toothed at the apex : stigmas 2 or 3 ; nut 3- 

 sided, inclosed in the permanent corol, which becomes 

 an utriculus-like permanent aril. 



Comptonia Staminate flowers ament cylindric with 

 calyx-scales : corol 2-petalled : filaments 2-forked. Pis- 

 tillate flowers spike or ament ovate, corol 6-petalled 

 styles 2 : nut ovate. 



ORDER IV. TETRAXDKIA. 



Urlica. Staminate flowers calyx 4-leaved : corol : 

 nectary central cyathiform. Pistillate flowers calyx 2- 

 leaved (2-valved :) corol : seed l, glossy. 



Morns. Staminate flowers calyx 4-parted : corol 0. 

 Pistillate flowers calyx 4-leaved : corol : styles 2 : 

 calyx berry-like : seed 1. 



Mnus. \ Staminate flowers ament composed of wedge- 

 form truncate 3-flowered receptacles : calyx a scale : 

 corol 4-parted. Pistillate flowers calyx 2-floweret! 

 scales : corol : seed compressed, ovate, wingless. 



ORDER V. PENTANDRIA. 



Jlnibrosia. Staminate flowers common calyx 1-leav- 

 d : corol 1-petalled, 5-cleft, funnel-form : receptacle na- 

 ked. Pistillate flowers calyx 1 -leaved, entire, theswell- 

 ing part 5-toothed, 1-flowered; corol : nut from the in- 

 durated calyx, 1 -seeded. 



Amaranthus. Staminate flowers calyx 3 or 5-leaved : 

 corol : stamens 3 or 5. Pistillate flowers ra'yx and 

 corol as the staminate : styles 3 : capsule 1-celled, open- 

 JTng transversely : seed 1. 



