SPICILIGIUM FILICUM rHILIPriNRNSIUM. 157 



POLYSTICHUM Rotli. 



Polysiichum. of the essentially Chinese gioup of P. auriculatum, is well lepre- 

 sented in the Philippines. Tlie first form known was 1'hegopteris nervosa F§e, 

 IMeni. 6. 13. Tab. 2. Fig. ^, wliich I do not hesitate to rediice as a variety of 

 Puli/stichum deliodon. The rich Cliinese niaterial that I have at niy disposition 

 has convinced nie that there are but sliglitly niarked ditterences by wliicli thc 

 Pliilippine plant can be distinguished. 



18. Polystichum deltodon (Bak.) Diels in Nat. Pflanzenfam. 1' (1899) 

 191. Aspidium deltodon Baker in Gard. Chron. 14: 494. 



Var. nervosum (Fee Gen. 244; Mem. 6: 13. Tab. 2. Fig. /f, Phegopteris) . 



Differt a tvpo montis Omi, Cliinae occid., leg. Faher 1045 statura 

 majori, pinnis magis nnmerosis (iisque ad 50 utrinque) minus acutis. 



LuzoN, Province of Bataan, IMount Mariveles (Lohcr) November, 1894^ alt. 

 1,400 m.; Province of Benguet, Baguio (591G Elmer) March, 1904. 



19. Polystichum Copeiandi n. sp. 



Eliizomate caespitoso 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 em. longa, 2 cm. lata, 

 pinnata pinnis densissime imbricatis inferioribus deflexis ca. 50 utrinque 

 rhombeo-acutiusculis marginibus parallelis 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 deficieutibus antice ca. 6, 1 mm. a margine remotis minutis 

 uniseriatis rufis impressis, indusio minuto fugaci rotimdo umbonato. 

 Textura herbacea, faciebus calvis, colore flavoviridi, opaco. 



LuzoN, District of Bontoc, Sagada (1901 Copeland) November, 1905, alt. 

 1,600 m. 



Very near the small group of P. hccatopteron Diels, and strongly resembling 

 P. Dielsii Christ in Bull. Acad. Mans. (1900) 238, from whieh it differs in its 

 smaller size, its short stipe, the pinnje not obtuse but pointed, the teeth more 

 pronounced and the sori less marginal. 



20. Polystichum obliquum (Don) Moore Ind. (1858) 87. Aspidium ohli- 

 quum Don Prodr. 3. A. caespitosum Wall. Cat. No. 3G7. 



Var. Luzonicum n. var. 



Stipite debili IT cm. longo, fronde 25 cm. longa 5.5 cm. lata, pinnis 

 imbricatis oblongo-rliomboideis 3 cm. longis basi 12 mm. latis acutis 

 acute auriculatis, margine fere integro sed dentilms parvis dejicientibus 

 aristatis ciliato, soris biseriatis sed antice pluribus (ca. 10) medialibus 

 minutis. Xervis occultis, textura herbacea, opaca. 



LuzoN, Province of Benguet, Trinidad (1812 Copeland) October, 1905, alt. 

 1,200 m. 



Very close to the plant from Cliina, India, Annam (leg. Cadiere) and of Japan, 

 but larger, the teeth very faint, scarcely visible bnt nevertheless aristate. 



