DAVALLIE^E OLEANDRA. 49 



(2) O. neriiformis Cav. Rhizome woody, mostly erect, branching, 

 clothed with appressed scales; stipe articulate below the middle that 

 is, longer than the outgrowth of the rhizome that bears it fronds scattered 

 or clustered, 20 to 40 cm. high, 2 cm. broad, narrowed gradually toward 

 both ends, usually subcoriaceous and glabrous; indusium oblique, large 

 enough to cover sorus. This species is construed as including PresFs 

 0. mollis, with pubescent fronds, and 0. macrocarpa, with large sori and 

 ciliate margin. 



Luzon, Xee, Cuining 94, 60 in part; Baguio, Elmer 6286; Davao, War- 

 burg 14186. 

 Pantropic. 



(3) O. Whitmeei Baker. Rhizome wide-creeping, 2 mm. thick, densely 

 beset with squarrose palese 4 mm. long; stipes (including both parts) 

 about 4 cm. high, articulate about the middle; fronds 20 to 30 cm. high, 

 one-tenth as broad, acuminate, narrowed to the base, slightly repand, 

 membranous, glabrous except for fine short hairs along the margin, and 

 narrow scales 2 mm. long standing horizontally from the costa, the latter 

 sometimes deciduous; sori large, almost orbicular, indusium membranous. 



Mount Apo, DeVore and Hoover 364; Copelcmd 1055. 

 Samoa, Celebes. 



(4) O. Cumingii J. Sm. Rhizome creeping, 2 mm. thick, densely clothed 

 with appressed lanceolate-subulate scales; stipe (including both parts) 

 about 5 cm. high, articulate below the middle; frond 20 to 30 cm. high, 

 one-tenth as broad, lanceolate, acuminate, contracted rather abruptly at 

 the base, subentire, with narrowly cartilaginous margin? papyraceous, costa 

 and both surfaces slightly pubescent; indusium rough. 



Luzon, Cuming 60 in part; Baguio, Elmer 6513. 

 India, southern China. 



(14) HUMATA'Cavanilles. 



Rhizome creeping, scaly, the stipes articulate to it; sori terminal, at 

 the margin or somewhat remote from it; indusium reniform or more 

 elongate, fixed by its broad base. Mostly small epiphytic ferns, resembling 

 Davallia, from which they are distinguished by the free sides of the 

 (usually broader) indusium. 



"L.Euhumata; indusium thin. 

 2. Sterile frond entire. 



3. Fertile frond entire (1) H. angustata 



3. Fertile frond lobed <2) H. heterophylla 



2. Sterile frond pinnatifld or pinnate. 



3. Lowest segments not greatly enlarged (3) H. gaimar.diana 



3. Lowest segments or pinnae very large. ^ 



4. Not more than bipinnatifid (4) H. repens 



4. At least tripinnatifld. 



5. Sori on the teeth of the seg- 



f (5) H. vestita 



mentS - 1(6) H. Cumingii 



5. Sori almost covering segments (7) H. botrychioides 



24036 4 



