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SPICILirrlTJM FILICUM PITIUT^PIP^ENSIUM. 157 
POLYSTICHUM Uoth. 
• PolysHchum, of the essentially Cliinese group of P. auriculatum, is well repvo- 
sented in the Philippines. The first form known was rhcyopicns nervosa Fee, 
Mem. 6, 13. Tah. 2. Fig. 4> wJiich I do not hesitate to reduce as a vari.ety of 
Pulystichum deltodon. Tlie rieh Chinese material that I have at my disposition 
has convinced me that there are but slightly marked difTcrences .by which tlie 
Philippine plant can he distin<^uishcd. 
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18. Polystichum deltodon (Bak.) IMels in Kat. Pflanzcnfam. 1* (IS!)!)) 
191. Aspidinm deltodon Baker in Hard. Chron. 14: 494. 
Var. nervosum (F6e Gen. 244; Mem. 6: ];J. Tah. 2. Fig. //, Phegoptcris) . 
DilTert a tjpo montis (5mi, Cliinae occid., leg. Fahei' 1045 statiira 
majori^ pinnis magis iiuiiierosis (usque ad 50 utrinque) minus acutis.. 
Luzon, Province of Bataan, Mount Mariveles {Loher) November, 1S04, alt. 
1,400 m.; Province of Benf,^uet, Baguio (51)10 Elmer) March, 1904. 
10. Polystichum Copelandi n. sp. 
Ehizoniate caespitoso foliis fasciciilatis, stip'itc tenui 2.5 cm. longo 
cum rliachi squamis subulatis nigris parcc vostito, viridi^ fronde lanceolato- 
lineari, basi non attenuata, acuminata^ usque ad 20 cm. longa, 2 cm. lata, 
pinnata pinnis dojisissimc imbrieatis inferloribus deflexis ca. 50 utrinque 
rhombeo-acutiuseulis marginibus parallelis 1 em. longis basi fere 0.5 cm. 
latisj postice cuneatis, antice truneatis acute auriculatis, postice integris 
antice minute dentatis dentJbus ca. 10 liaud aristatis, nervis furcatis, 
soris postice deficientibns antice ca. 6, 1 mm. a margine remotis minutis 
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uniseriatis rufis impressis^ indusio mimito fugaci rotundo umbonato. 
Textura herbacea, faciebus ealvis, colore fla\oviridi, opaco. 
Luzon, District of Bontoc, Sagada ( 1901 Copeland) November, 1!)05, alt. 
1,000 ra. 
Very near the small group of P. hecatopteron Diels, and strongly resembling 
P. bielsii Christ in Bull. Acad. Mans. (190(>) 2.'?S, from which it didcrs in its 
smaller size, its short stipe, the pinna; not obtuse but pointed, the teeth more 
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pronounced and the sori less marginal. 
20. Polystichum obliquum (Don) Moore Ind. (1858) 87- Afipi'dhim ohli- 
quum Don Prodr. 3. A. caespifosum Wall. Cat. No. 307. 
Var. Luzonicum n. var. 
^ Stipite debili 17 cm. longo, fronde 25 cm. longa 5.5 cm. lata, pinnis 
imbrieatis oblongo-rliomboideis 3 em. longis basi 12 mm. latis acutis 
f acute auriculatis, margine fere integro sed denti])us parvis dejicicntibus 
aristatis ciliato, soris biseriatis sed antice pluribus (ca. 10) medialibus 
minutis. Nervis occultis, textura lierbacca, opaca. 
Luzon, Province of Benguet, Trinidad (1812 Copeland) October, 1005, alt. 
1,200 m. 
Very close to the plant from China, India, Aniiain (leg. Cadiere) and of Japan, 
but larger, the teeth very faint, scarcely visible but nevertheless aristate. 
