4 
AROIDEZ. 295 
thickened connective, the cells discrete or contiguous, free or 
buried in the connective and opening usually by a terminal pore ; 
rarely by a longitudinal slit; pollen globose or ellipsoid, powdery 
or conglomerate. Ovary sessile, 1-3-celled, style short or long, 
stigma discoid or lobed ; ovules 1 or more in each cell, variously 
inserted. Fruit of many small free or connate berries or drupes 
adnate to the spadix. Seeds in each drupe or berry 1 or few, 
usually embedded in pulp; albumen copious scanty or none, 
embryo axile, or in exalbuminous genera thick and with the 
plumule in a lateral slit.—Species about 1,000, mostly in tropical 
regions of both hemispheres. 
Flowers 1-sexual, monecious, rarely (Arisema 
often) dicecious :— 
Water or marsh plants; Jeaves entire ; 
barren appendage none; ovules ortho- 
tropous :— 
Floating, stemless, aquatic herbs; leaves 
sessile, obovate-cuneate, in a rosette- 
like tuft ; base stoloniferous 3 stake. RA. 
Submerged or marsh plants; leaves 
tufted from a buried creeping root- 
stock ‘ ‘ : ‘ ‘ . 2, CRYPTOCORYNE. 
Terrestrial herbs :— 
Leaves and scapes rising directly from a 
tuber-like hypogeal corm, the leaves 
usually more or less lobed. 
Spadix with a barren terminal append- 
age :— 
Male flowers stipitate ; flowers often 
diwcious; leaves variously lobed ; 
ovules orthotropous . ‘ . 3. ARISAMA, 
Male flowers sessile or nearly so; 
flowers always moncecious :— 
Flowers preceding the solitary leaf ; 
males and females remote ; neu- 
ters present above the females ; 
leaves pedatipartite; edges of 
spathe connate below; ovules 
orthotropous . ° : . 4, SavRoMatum, 
