KEY TO PLANTS. 
flowers on the same spadix (but some- 
times separated by a flowerless interval) 
and without a perianth, rarely flowers 
dicecious, in this ease leaves broad and 
divided and anthers dehiscing at the top. 
Leaves usually broad. Avroideae. 
(6) Flowers dicecious, more rarely moncecious, 
in the latter case male and female 
flowers on different spadices (which, 
however, sometimes touch one another, 
but are separated by their spathes, at 
least when young), and provided with a 
perianth of several scales or hairs. 
Leaves narrow, sessile, undivided, 
parallel-veined. Anthers dehiscing by 
longitudinal slits. a 
9 (a) Herbs with an erect or floating stem. 
Margin of the leaves entire, without 
prickles. Perianth consisting of scales 
or hairs. Ovules 1-2, pendulous. Em- 
bryo large. Typhaceae. 
(6) Shrubs or trees, rarely stemless or creeping 
herbs. Margin of the leaves nearly 
always serrate or prickly. Perianth and 
bracts wanting. Ovules solitary and 
ascending or numerous. Embryo very 
small, Flowers dicecious. Pandaneae. 
