SPICILIGIUM FILICUM PHILIPPIC ENSIUM. 
157 
POLYSTICHUM Roth. 
Polystichum, of the essentially Chinese group of P. auriculatum, is well repre- 
sented in the Philippines. The first form known was Phegopteris nervosa Fee, 
Mem. 6. 13. Tab. 2. Fig. i ), which I do not hesitate to reduce as a variety of 
Polystichum deltodon. The rich Chinese material that I have at my disposition 
has convinced me that there are but slightly marked differences by which the 
Philippine plant can be distinguished. 
18. Polystichum deltodon (Bak.) Diels in Nat. Pflanzenfam. I 4 (1899) 
191. Aspidium deltodon Baker in Gard. Chron. 14: 494. 
Var. nervosum (F4e Gen. 244; Mem. 6: 13. Tab. 2. Fig. J f , Phegopteris) . 
Differt a typo montis Omi, Chinae occid., leg. Faber 1045 statura 
majori, pinnis magis nnmerosis (usque ad 50 utrinque) minus acutis. 
Luzon, Province of Bataan, Mount Mariveles (Loher) November, 1894, alt. 
1,400 m.; Province of Benguet, Baguio (5916 Elmer) March, 1904. 
19. Polystichum Copelandi n. sp. 
Rhizomate eaespitoso . foliis fasciculatis, stipite tenui 2.5 cm. longo 
cum rhachi squamis subulatis nigris parce vestito, viridi, fronde lanceolato- 
lineari, basi non attenuata, acuminata, usque ad 20 cm. longa, 2 cm. lata, 
pinnata pinnis densissime imbricatis inferioribus deflexis ca. 50 utrinque 
rhombeo-acutiusculis marginibus parallels 1 cm. longis basi fere 0.5 cm. 
latis, postice cuneatis, antice truncatis acute auriculatis, postice integris 
antice minute dentatis dentibus ca. 10 haud aristatis, nervis furcatis, 
soris postice deficientibus antice ca. 6, 1 mm. a margine remotis minutis 
uniseriatis rufis impressis, indusio minuto fugaci rotundo umbonato. 
Textura herbacea, faciebus calvis, colore flavoviridi, opaco. 
Luzon, District of Bontoc, Sagada (1901 Copelcmd) November, 1905, alt. 
1,600 m. 
Very near the small group of P. hecatopteron Diels, and strongly resembling 
P. Dielsii Christ in Bull. Acad. Mans. (1906) 238, from which it differs in its 
smaller size, its short stipe, the pinnae not obtuse but pointed, the teeth more 
pronounced and the sori less marginal. 
20. Polystichum obliquum (Don) Moore Ind. (1858) 87. Aspidium obli- 
quum Don Prodr. 3. A. caespitosum Wall. Cat. No. 367. 
Var. Luzonicum n. var. 
Stipite debili 17 cm. longo, fronde 25 cm. longa 5.5 cm. lata, pinnis 
imbricatis oblongo-rhomboideis 3 cm. longis basi 12 mm. latis acutis 
acute auriculatis, margine fere integro sed dentibus parvis dejicientibus 
aristatis ciliato, soris biseriatis sed antice pluribus (ca. 10) medialibus 
minutis. Nervis occultis, textura herbacea, opaca. 
Luzon, Province of Benguet, Trinidad (1812 Copeland) October, 1905, alt. 
1,200 m. 
Very close to the plant from China, India, Annam (leg. Cadiere) and of Japan, 
but larger, the teeth very faint, scarcely visible but nevertheless aristate. 
