426 “ GENERA OF FERNS. 
lepis with Humata, and setting aside habit, it becomes diffi- 
cult to point out atechnical character that will readily distin- 
guish them, and which is particularly the case with Humata 
Gaimardiana, the sori of which are seated a little within the 
margin as in Nephrolepis, while in habit it agrees with the 
other species of Humata, and on the whole evidently has 
more affinity with Davallia, than with genera in Aspidiee. 
104. LEUCOSTEGIA, Presl, J. Sm. 
(Davalliz sp. Auct.) 
Veins forked ; venules direct, equal, their apices free and 
sporangiferous ; indusium orbicular or oblong, scariose, equal 
with the indusiiform margin, its sides free; sori round, often 
solitary in each lacinie. 
Fronds flabellato-multipartite, or tripinnatifid, lacinie narrow, 
linear-lanceolate, or obtuse, their apices usually bifid, with the 
sori seated in the sinus; indusium attached by its base ; 
sporangia vertical, sporules oblong-reniform. 
Species. 1. L. parvula, (Wall.) 2. L. falcinella, (Presl.) 
. L. pulchra, (Don.) 4. L. cherophylla, (Wall.) 5. L. 
ligulata, (Wall.) 6. L. immersa, Presi. (Davallia, Wall.) 
5. L. hirsuta, J. Sm. 8. L. affinis, J. Sm. 
Illust. Hook. et Grev. Ic. Fil. t. 138. Hook. Gen. Fil. t. 62. 
Obs. The divided fronds, having the sori situated in the 
sinus of the lacinie, together with the scariose indusium, , 
will be sufficient to distinguish this genus from the pre- 
ceding. 
105. MICROLEPIA, Presl, J. Sin. 
(Davallize sp. Auct. Cibotii sp. Presl.) 
Veins forked or pinnate; venules direct, their apices free 
and sporangiferous ; special indusium attached by its base 
and sides widening outwards, its free margin truncate or 
rounded, constituting round or vertical oblong superficial 
sori; receptacle elevated ; sporangia spreading. 
Fronds pinnate or bi-pinnately multifid, smooth or villose, 
