DAVALLIE^E MICROLEPIA. 55 



.(17) MICROLEPIA Presl. 



Rhizome creeping, hairy, stipes not articulate to it (exc. M. ciliata) ; 

 sori near the margin; indusium usually as broad as long, fastened at the 

 base and sides. Terrestrial and epiphytic ferns of various aspect. As 

 construed here, the genus includes Wibelia Bernh. (M. pinnata and its 

 varieties). 



1. Davallodes; fronds seriate, stipes jointed to rhizome (1) M. ciliata 



1. Wibelia; fronds clustered, tracheides present in specialized 



receptacles of sorus (2) M. pinnata 



1. Eumicrolepia ; no tracheides in receptacle, fronds seriate, 

 not jointed to rhizome. 

 2. Indusium as long as broad, or longer. 



3. Pinnules bluntly toothed (3) M. strigosa 



3. Pinnules of lower pinnae incised nearly to 



rachis (4) M. rhomboidea 



2. Indusium broader than long. 

 3. Frond glabrous. 



4. Small, pinnules crenately lobed (5) M. philippinetisis 



4. Large, pinnules cut nearly to rachis (6) M. platyphylla 



3. Frond not glabrous (7) M. Speluncce 



\l) M. ciliata (Hk.). Rhizome creeping, covered with soft, brown 

 hairs; stipe 10 cm. high, firm, erect, pubescent; frond 30 to 45 cm. long, 

 half as broad, ovate-lanceolate, tripinnatifid; pinnae spreading, lanceolate, 

 the central ones the largest, 10 cm. or more long, 2 to 4 cm. broad, cut 

 down to a broadly winged rachis, with oblong pinnules cut about half 

 way down with falcate, mucronate teeth; texture thinly herbaceous, 

 flaccid; rachises and under surface softly hairy; sori 2 to 12 to a pinnule, 

 very small, placed near the center of the teeth near the base. 



Luzon, Cuming 174; Arayat 800 m., Loher. Todaya, Davao, 1,100 m., 

 Copeland 1273. 



(2) M. pinnata Cav. Rhizome creeping, fibrillose; stipe nigrescent and 

 squamulose toward the base, strong, erect, 15 to 25 cm. long; frond 20 

 to 40 cm. long, 10 to 20 cm. wide, with distant linear slightly toothed 

 pinnae 10 to 15 cm. long, 6 to 8 cm. broad; texture coriaceous; sori one 

 to each tooth, small submarginal. 



"Philippines," Nee, Meyen; Luzon, Cuming 139; Mount Mariveles, Loher, 

 Warburg 14183. 



Malaya and Polynesia. 



Warburg's Davao plant is described as epiphytic. The Mariveles speci- 

 mens are terrestrial, with rhizomes so short the fronds are clustered. 



M. pinnata Cav. var. gracilis (Bl.) (Davallia Luzonica Hk.) Lower 

 pinnae tripinnatifid, deltoid: sometimes bipinnate throughout. Interme- 

 diate forms occur. 



Davao, Loher, Warburg 14137; Mount Mariveles, Merrill, 3213; Copeland. 



(3) M. strigosa (Sw.) Presl. Rhizome stout, creeping, pubescent; 

 stipe erect, strong, 15 to 30 cm. high, both it and the rachis pubescent 

 throughout; frond 30 to 100 cm. long, 15 to 30 cm. broad, lanceolate, 

 bipinnatifid; lower pinnae 10 to 20 cm. long, 2 cm. broad, linear-lanceolate, 

 much acuminate, cut down to the rachis with unequal-sided, broadly and 



