147 
Instead of resisting desiccation, as do all the other species, this one yields readily, 
and endures it, without losing- its pinnoe, and ])roinptly recovers. Accordingly, it 
is the only one to dry readily in the press. It is probable that several distinct 
])lants are still grouped under N. cordifolia. 
Nephrolepis acutifolia (Desv.) Christ. 
Mindanao, Cotabato, in mangroves, Copeland' 1413; Surigao, Bolster. 
Africa, Malaya, Australia. 
HU MATA Cav. 
Humata immersa Mett. var. nana Copel. n. var. 
Stipitibus 5-10 cm. altis, fiHi'ormibus; fronde 5-10 cm. alia, bipinnata, 
pinnis obtnsis, pinnulis rotundatis, soris grand ibus. 
Luzon, Benguet, Baguio, Copeland 1830. Ad saxa sub Pinis. 
Elmer 0004 is intermediate between this apparently rather stable dwarf and the 
type. 
Humata parvula (Wall.) J. Sm. 
Mindanao, San Ramon. Copeland 1005. 
iMalaya. 
DAVALLIA Sm. 
,/^Davallia brevipes Copeland n. sp. 
IJhizomate repcnte, jialeis lan'ccolatis 6 mm. longis, fnscis, apicibus 
maTginil)usqne albidis, ap])ressis deiisissime ol)tecto; stipitibus remotis, 
ca. 17 mm. altis, glabris, angnste alatis; Ironde deltoidea, 10 cm. alia, 
ti cm. lata, quadripinnata ; rbacbilms supra furcato-alatis, glabris; piuiiis 
iutimis paulo detlexis, late ovatis, falcatis; supei'ioribus adsceudentibus, 
plerumque rectis, auguste ovatis, obliquis; pinnulis minntis, eiineatis, 
ad costas in segmentis angustissimis, lougosnbulatis, coriaceis, glabris 
divisis; jisendo-venis nnllis; soris lieinicylindraceis, marginalibus, utro- 
bicjue cornu longo. (Tab. 2.) 
Mindanao, Zamboanga, San Ramon, Copeland 1062. In coronis .arborium, 
alt. 500 m. 
In all respects a most distinct species. Owing to its inaccessible habitat it is 
not often seen, and on fallen boughs is rarely fertile. The hair-like ti[>s of 
the numerous segments give it an almost hirsute appearance. The segments 
curl upward very pronq)tly with loss of water. 
y/Oavallia embolostegia Copeland n. sp. 
Ebizomate ca. 7 mm. crasso, paleis ferrngineis lirnunescentibus lineari- 
Inis 8 mm. longis dense vestito ; stipitibus remotis, 30-50 on. altis, validis, 
supra sulcatis, glabris, nitidis; fronde deltoidea, 60-100 cm. alta, acu- 
minata, glaberrima, 4-vel 5-pinnatilida; pinnis et pinnlis^ iutimis longe 
acnminatis, deltoideo-ovatis, superioribns angustioribus ; rhachibus penul- 
tiniis alatis; pinnulis nltimis olilongis vel lanceolatis, serratis vel ineisis, 
vix coriaceis, venulis intercalatis carentibus; soribns cylindraeeis niargi- 
nalibus, dentibus excelsis; iudusiis valde rostratis. (Tab. 3.) 
Luzon, Lepanto, Bagnen, 1,900 m. s. m., Copeland 1914, ad truncos epiphytica; 
Bengno't, Baguio, Elmer (1005; Bataan, monte Mariveles, Merrill 3715, Borden 
1343; Tayabas, monte Banajao, Whitford 1010. 
