10 flat recevtacle, forming echenes at 
oe Alismataceae (p. 
b Ovary one in each flower, forming either a 
/O berry or a capsule at maturity 
@ Ovary superior; perianth segments mostly alike 
and petaloids; sometimes the outer series 
Iz ey rarely both; stamens 6, rarely 4 
JO Flowers in umbels Amaryllidaceae (pe 
!O Flowers in racemes, spikes or solitary, 
[4 not in umbels 
\"2 Leaves 3, broad and net-veined, borne in a 
Iu whorl at the summit of the stem; flowers 
solitary in the whorl Trilliaceae (pe 
1'2 Leaves and flowers not as described, the 
former basal or alternate uvon the stem, 
bo( tne latter in racemes, panicles or spikes, 
or solitary in the axils Liliaceae (pe 
98 Ovary inferior; pverianth segments in 2 unlike 
}2 series or dissimilar 
}O Flowers regular; stamens 3 Iridaceae (pe 
/O Flowers irregular; stamens 1 (or 2) variously 
joined with the style to form an erect . 
[4 a Orchidacese (P. 
) 
