I (i2 O N Y CH IUM .
sori are soon confluent, and the free margin of the two indusia
wrap over the midrib, and the sori eventually covers th e
whole disc, as in th e Acrostichums. I t is distinguished from
Loma ria in the sporangia being seated in th e immediate axis
of the indusium, (in which respec t it resembles P te r is ,) whilst
in Loma ria the receptacle is broad, and occupies a great
portion of the space between the midrib and the axis of the
indusium.
I
