568 RoBINSON: PTERIDOPHYTA OF THE FP AWAIIAN ISLANDS 
Separate lobes of _ margin 
reflexed as 
Leafstalks dies. eens 
Leafstalks brownish, dull. 
istinct in sinus 
of leaf. 
Sori crowded. 
Indusium opening outward. 
Pinnae strongly developed on an- 
terior side 
Sori transverse on the ex- 
panded tips of free or anas- 
tomosing veins, segments 
a 
slightly developed on pos- 
terior side. 
Pinnae developed on both sides of 
the midrib, though not 
uall 
equally. 
Indusium attached only at the 
base; pinnae jointed to the 
midrib. 
Indusium attached on three 
sides. 
Ultimate segments cune- 
ate. 
Ultimate segments not 
cuneate but toothed or 
lobed 
Indusium absent; sporangia sunken in a marginal 
groove. 
Sori dorsal, with or without indusia. 
Indusium partly inferior, hood-shaped. 
Indusium superior or wantin 
ndusium wantin 
Sporangia istlowing the veins. 
Under surface covered with a waxy 
powder. 
Under surface not covered with a 
waxy powder. 
Sporangia in definite, roundish sori. 
Leaves non-articulate. 
Leaves articulate 
Veins free 
Veins FAA with free 
cluded veinlets. 
Lal 
Lal 
6. 
oO. 
Adiantum. 
ypolepis. 
. Schizostege. 
Diellia. 
Odontoloma. 
. Nephrolepis. 
. Odontosoria. 
13. Microlepia. 
nn 
‘ Vittaria. 
. Filix. 
. Ceropteris. 
17. Coniogramme. 
. Dryopteris (in part). 
. Polypodium. 
