147 



Instead of resisting desiccation, as do all the other species, this one yields readily, 

 and endures it, without losing its pinnse, and promptly recovers. Accordingly, it 

 is the only one to dry readily in the press. ]t is probable that several distinct 

 plants are still grouped under N. cordifolia. 



Nephrolepis acutifolia (Desv.) Christ. 



Mindanao, Cotabato, in mangroves, Copeland 1413; Surigao, Holster. 

 Africa, Malaya, Australia. 



HUM ATA Cav. 



Humata immersa Mett. var. nana (opel. n. var. 



Stipitibus 5-10 cm. altis, filiformibus; fronde 5-10 em. alta, bipinnata, 

 pinnis obtusis, pinnulis rotundatis, soris grandibus. 



Luzon, Benguet, Bagnio, Copeland 1830. Ad saxa sub Pinis. 

 Elmer 6G04 is intermediate between this apparently rather stable dwarf and the 

 type. 



Humata parvula (Wall.) J. Sm. 

 Mindanao, San Ramon, Copeland 1GG5. 

 Malaya. 



DAVALLIA Sm. 



Davallia brevipes Copeland n. sp. 



libizomate repente, paleis lanccolatis G mm, longis, fuscis, apicibus 

 marginibusque albidis, appressis densissime obtccto; stipitibus remotis, 

 ca. 17 mm. altis, glabris, anguste alatis; fronde deltoidea, 10 cm. alta, 

 6 cm. lata, quadripinnata; rhachibus supra furcato-alatis, glabris; pinnis 

 infimis paulo deflexis, late ovatis, falcatis; superioribus adscendentibus, 

 plerumque rectis, anguste ovatis, obliquis; pinnulis minutis, cuneatis, 

 ad costas in segmentis angustissimis, longosubulatis, coriaceis, glabris 

 divisis; pseudo-venis nullis; soris bemicylindraceis, marginalibus, utro- 

 bique cornu longo. (Tab. 2.) 



Mindanao, Zamboanga, San I'amon, Copeland 1662. 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 tips of 

 the numerous segments give it an almost hirsute appearance. The segments 

 curl upward very promptly with loss of water. 



Davallia embolostegia Copeland n. sp. 



libizomate ca. 7 mm. crasso, paleis ferrugineis brunnescentibus lineari- 

 bus 8 mm. longis dense vestito; stipitibus remotis, 30-50 cm. altis, validis, 

 supra sulcatis, glabris, nitidis; fronde deltoidea, 60-100 cm. alta, acu- 

 minata, glaberrima, 4-vel 5-pinnatifida; pinnis et pinulis 1 infimis longc 

 aenminatis, deltoideo-ovatis, superioribus angustioribus ; rbachibus penul- 

 timis alatis; pinnulis ultimis oblongis vel lanccolatis, serratis vel incisis, 

 vix coriaceis, venulis intercalatis carentibus; soribus cylindraceis margi- 

 nalibus, dentibus excelsis; indusiis valdc rostratis. (Tab. 3.) 



Luzon, Lepanto, Bagnen, 1,000 m. s. m., Copeland 1914, ad truncos epiphytica; 

 Benguet, Bagnio, Elmer 6005 ; ' Bataan, monte Mariveles, Merrill 371.'), Borden 

 1343; Tayabas, monte Banajao, Whitford 1010. 



