200 
CHRIST. 
of a Hunk-iently distinct species, but often tlic long and sliort pinn^ are found on 
tlie same plant. The frond is often terminated by a single simple pinna, bnt some- 
times it is pinnatifid. The jiinnaj are slightly petioled, somewhat liastate 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 al\\ays slender and llexuous, about 8 cnu long, 
tlie frond about 10 cm. long, the lateral pinnse 5 to 7 on each side, 4 cm. lung, 
2.5 cm. wide, the terminal one 5 to 10 cm. long. Tlie sori arc small, very 
irregular, sometimes few, sometimes very numerous often occupying only the 
terminal part of the frond. • 
Var. acrostichoides (J. fcim.) Ncphrodium ad'osiichoidcs J. Sm. in Hook. 
.Tourn. Bot. 3 (1841) 411; Christ Ann. Jard. Hot. Buitenz. 15' (1808) 130. 
The sterile frond is more or less that of D. diversiloha, but the fertile frond 
is very long stipitate and the pinnu; arc strongly reduced in width, approaching 
those of Uymnopleris and Egcnol/ia. Two subvarieties are distinguishable: 
Subviir. rhombea, n. subvar. 
Froiuliri fertilis stipitu dobili flexuoso valdo cloiigato, laitiiiia 7 cm. 
Innga, pinnis 5 utrinqno, apice frondis elongato 1ol)ato aciiminatoj pinnis 
rhomboideo-lanceolatis usque ad linearibus, subpctiolatis, basi truneatis, 
obtusis, crenulatis, 8-^ nun. latis, soris confertis aut seriatis aut omnio 
confluontibus^ areola una. 
Sterile pinnae with the form of those of D. diversiloha, the frond with the 
stipe 12 cm. long, the fertile frond, including the stipe 25 cm. long, the stipe 
being about 18 em. long. 
tuzoN, without locality (140 Cuming); Province of Kizal, TJosoboso (1084 
Ramos) July, 1000: Province of Bataan, Mount Mariveles (3130 Merrill) Oc- 
tober, 1903; (Copela-nd) August, 1904; (6153 heiherg) July, 1004: Province of 
Tayal)as (Infanta) (7S4 Whit ford) September, 1904. Mindanao, District of 
Davao (503 Copchiud) March, 1904. 
Philippines and Celebes. 
Subvar. lanceola n. subvar. 
Differt a pracccdcnte pinnis stex'ilibuy lanceolatis niargino fere integris 
apice obtusis aut acutiusculisj ^pi*^^ frondis valde elongato fere caudato, 
areola una huie inde duabus. 
Luzon, I*rovince of Bataan, Mount Mariveles (250 Gopeland) January, 1004: 
Province of Rizal (140 Foxworthy) January, 1900. Negros, Giniagaan River 
(IGOO Whitford) May, 1900. Mindanao, Province of Zamboanga {Gopeland) 
1005. 
A specimen from San Ramon {Copcland) April, 1905, offers the maximum 
reduction, the fertile pinna? 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. Sarasln. 
20. Dryopteris acromanes n. sp. 
Rbizomate brevi crasso radicoso, foliis faHcicidatis, ptipite rufo-aut 
plunibeo-straniineo^ tenuis 15 ad 30 em. longo, fere nudo^ fronde oblongo- 
acuniinata, 17 em. longa, D em. lata, ])innata, pinnis ea. 7 utrinque 
infra apiceme longatum lobatuni, petiolulatis, basi lata truneata sed 
c 
