to the Genera.) XXI.—MONCGECIA. 137 
§Leaves and scapes arising from a short caudex Pye a 
hypogeal rhizome or if arising direct from a tuber 
geal corm the leaves peltate and undivided; 2 ae wider 
than the anther-cells ; flowers and leaves present together :— 
[p. 136] 
Leaves peltate ; stamens monadelpho 
Spadix with a barren appendage ; m8 adesté at its base to 
the spathe: 
Ovules fev: basal 1004. Alocasia. 
Ovules many, parie 1005. Colocasia. 
Spadix without an a premier ovules et parietal :— 
Spadix quite free from the spathe ......1006. Remusatia, 
Spadix at base and female part of inorsene partially 
adnate to the spathe 007. Steudnera. 
sites not ey spadix without a 2 appendage ; 
stamens 2-4, fr 1008. Aglaonema. 
sittin. i sata by a spathe; if with a spathe then 
not spicate :—[p. 
§| Leaves sae apa parallel; nearly all aquatic or marsh 
plants :—! p, 140 
Ovary ‘aieiade carpels connate; perianth 2-seriate, 3 outer 
segments calycine, 3 inner petaloid ; stamens 6 or 9, free; floating 
aquatics sees Pei HOWE a I Wek ee 889. Hydrocharis. 
Ovary super 
Carpels me or mo 
Tufted patie in dies radical leaves ; flowers whorled on 
erect scapes, conspicuous; perianth 2-seriate with 3 segments 
in each series; carpels many; seeds basilar erect; PT, 
9 or more, free 1017 it 
Creeping submerged aquatics with a gai: ster 
leaves; flowers minute, axillary; perianth 0; carpels 2-9, 
usually only 4 ripening ; seeds a stamen ees 
1022. Zanichellia. 
Carpel solitary or, if 2 or more, carpels connate; flowers 
minute :-— 
Flowers axillary ; creeping submerged aquatics with linea: 
opposite, alternate or whorled leaves; perianth of ain 
flower double, outer whorl tubular, 4-fid, inner hyaline; of 
female single hyaline or 0; carpel solitary ; stamen sami 
Flowers in terminal spikes or spikelets or heads; leaves 
radical tufted or distichous or 3-stichous along the stem; 
