200 
CHRIST. 
of a sufficiently distinct species, but often the long and short pinna- are found on 
the same plant. The frond is often terminated by a single simple pinna, but some- 
times it is pinnatifid. The pinnae are slightly petioled, somewhat hastate and 
slightly cordate at the base, slightly lobed toward the base, but nearly always 
with some strongly elongated and unequal lobes toward the apex which is 
abruptly truncate. The stipe is always slender and flexuous, about 8 cm. long, 
the frond about 10 cm. long, the lateral pinnae 5 to 7 on each side, 4 cm. long, 
2.5 cm. wide, the terminal one 5 to 10 cm. long. The sori are small, very 
irregular, sometimes few, sometimes very numerous often occupying only the 
terminal part of the frond. 
Var. acrostichoides (J. Sm.) Nephr odium acrostiehoides J. Sm. in Hook. 
Journ. Bot. 3 (1841) 411; Christ Ann. Jard. Bot. Buitenz. 1 5 1 (1898) 130. 
The sterile frond is more or less 'that of D. diversiloba, but the fertile frond 
is very long stipitate and the pinnae are strongly reduced in width, approaching 
those of Gymnopteris and Egenolfia. Two subvarieties are distinguishable: 
Subvar. rhombea, n. subvar. 
Frondis fertilis stipite debili flexuoso valde elongato, lamina 7 cm. 
longa, pinnis 5 utrinque, apice frondis elongato lobato acuminato, pinnis 
rhomboideo-lanceolatis nsque ad linearibus, subpetiolatis, basi truncatis, 
obtusis, crenulatis, 8-4 mm. latis, soris confertis aut seriatis ant omnio 
confluentibns, areola nna. 
Sterile pinnae with the form of those of D. diversiloba, the frond with the 
stipe 12 cm. long, the fertile frond, including the stipe 25 cm. long, the stipe 
being about 18 cm. long. 
Luzon, without locality (149 Cuming); Province of Rizal, Bosoboso (1084 
Ramos) July, 1906: Province of Bataan, Mount Mariveles (3130 Merrill) Oc- 
tober, 1903; (Copeland) August, 1904; (6153 Leiberg) July, 1904: Province of 
Tayabas (Infanta) (784 Whitford) September, 1904. Mindanao, District of 
Davao (503 Copeland) March, 1904. 
Philippines and Celebes. 
• Subvar. lanceola n. subvar. 
Differt a praecedente pinnis sterilibns lanceolatis marginefere integris 
apice obtusis aut acutiusculis, apice frondis valde elongato fere caudato, 
areola nna liuic inde duabus. 
Luzon, Province of Bataan, Mount Mariveles (250 Copeland) January, 1904: 
Province of Rizal (140 Foxworthy) January, 1906. Negros, Gimagaan River 
(1600 Whitford) May, 1906. Mindanao, Province of Zamboanga ( Copeland ) 
1905. 
A specimen from San Ramon ( Copeland ) April, 1905, offers the maximum 
reduction, the fertile pinnae being reduced to a width of 2 mm., and the sori 
accordingly having the appearance of a string of beads as is the case in specimens 
from Celebes leg. Sarasin. 
20. Dryopteris acromanes n. sp. 
Rhizomate brevi crasso radicoso, foliis fasciculatis, stipite rufo-aut 
plumbeo-stramineo, tenui, 15 ad 30 cm. longo, fere nudo, fronde oblongo- 
acuminata, 17 cm. longa, 9 cm. lata, pinnata, pinnis ca. 7 utrinque 
infra apiceme longatum lobatum, petiolulatis, basi lata truncata sed 
