36 COPELAND. 
I do not know P, pentaphyllum except by the deseriptionj by which I do not 
see how to refer any of these specimens to it. P. insigne BI., which I have 
collected in Negros, is quite distinct. 
DRYOSTACHYUM J. Smith. 
Dryostachyum pilosum J. Sm. 
A jjlant collected at Camp Keithley by Mrs. Clemens has the apex vegetative, 
but several pairs of intermediate pinme partly or completely fertile, their surface 
only moderately reduced. 
DRYNARIA (Bory) J. Sm. 
Drynaria descensa Copeland sp. nova. 
Species D. qaercifoliae affinis; rhizomate 5-10 cm. crasso, paleis pel- 
tatis eaduco-aristulatis armato, apice mammif orme ; frondibus conchoi- 
deis siccis, duris, bruniieis v^l infra griseo-nitidis, 5-10 cm. longis, 
ovatis, leviter crenato-Iobatis, cordatis lobis basalibus imbricatis; frond- 
ibus fertilibus 40-60 cm. longis, Pegmentis infimis diminutis et ad pe- 
tiolum usque pedem alatum decurrentibus, segmentis majoribus 10-20 
cm. longis, 12-25 nun. latis, crenatis, acuminatis, costam versus paullo 
angustatis, ala angusta ca. 4 em. longa connexis, papyraceo-coriaceis, 
glabris; venatione sorisque ut D. quercifoUae. 
Luzon, Prov. Nueva Ecija, 100 m. s, m., ad terram repens, interdum ad 
truncos arbuscularum 1-2 m. scandens, Copeland 20G1; Rizal, Guerrero 3, frons 
fertilis. 
A plant well characterized by the small humus-collecting scale-leaves, and the 
segments of the normal frond narrowed toward the base and separated by twice 
their own breadth. The reduction of the scale-frond with the assumption of the 
terrestrial habit occurs also in D. Delavayi, D. reducta, and D. sinica, Chinese 
species in another section of the genus.* 
LYGODIUM Swartz. 
Lygodium Matthew! Copel. sp. nova. 
Lygodium maximum rhacliidibus volubilibus 5 mm crassis, alte (9 m) 
scandentibus, pinnis^ sessilibus; pinnis^^ ultra 50 cm longis, ubique gla- 
bris vel venis ad baseos pinnularum infra pubescentibus ; pinnulis utroque 
latere 1-2, petiolulis 1.5-2.5 cm longis, vix vel hand articulatis, inaequila- 
teraliter cordatis, in segmentis 2-3 20 cm longis fureatis; pinnula termi- 
nale cordato-cuneata, in segmentis ca. 6 patentibus 20-30 cm longis 
3^ cm latis acuminatis profunde palmata, serrulata, herbacea; venulis 
anastomosantibus, fronde fertile invisa. 
Mount Maquiling, 3C0 m. s. m., C. G. Matthew. 
The Philippine relative of this giant, /.. Merrilli Copeh, Philip. Journ Sci 2 
Bot. (1907), 14G, has pinnae ii 25-30 cm. long, pinnules truncate, segments about 
1.5 cm. wide, and but 2-A segments of the terminal pinnule. 
^ Christ, in Bull. See. Bot. France 22, Mem. 1 {1905} 23. 
