1911] CHRIST—FILICES WILSONIANAE 353 
Polystichum Wilsoni H. Christ, n. sp.—Rhizomate crasso 
obliquo radicoso atrobrunneo, squamis magnis ovato-acutis scario- 
sis dilute brunneis margine saepe laceratis 6 mm. longis vestito, 
stipitibus subfasciculatis, 17 cm. longis, luteo-stramineis, 2 mm. 
crassis, iisdem squamis sparsis, et insuper cum rachi squamis 
lanceolato-linearibus et subulatis longis albidis setisque vestitis. 
Lamina.45 cm. longa 10 cm. lata acuminata, versus basin sensim 
angustata, pinnis infimis remotis valde abbreviatis et deflexis. 
Lamina bipinnata, pinnis ca. 35 utrinque alternis sessilibus approxi- 
Matis, 5 cm. longis basi 16 mm. latis acuminatis, basi subinaequali- 
Us i.e., pinnula basali anteriore reducta, pinnulis confertis ca. 15 
utrinque, obliquis, sessilibus, oblongis acutis, inaequalibus, postice 
minus, antice creberrime et profunde biserrato-aristatis, dentibus 
angustis pectinatis, soris medialibus brunneis confluentibus, 
indusio inconspicuo fugaci orbiculari minuto, o.5 mm. lato nigro- 
umbonato. Facie superiore pilis longissimis lucentibus parce, 
facie inferiore cum costa costulisque setis longis subulatis albican- 
tibus pilisque abunde vestita. Textura herbacea, colore luteo- 
Virente. 
HaB.—Woodlands, Mupin, 4000-6000 ft., August 1908, no. 261 
4. 
Inter P. aculeatum (Polypodium L.) Schott et P. Bakerianum (Aspidium 
Atkins.) Diels intermedium. 
Polystichum deversum H. Christ, n. sp.—Rhizomate brevi 
“ecto, squamis latis ovalibus acutis scariosis brunneis vestito. 
Stipitibus fasciculatis 4 cm. longis, iisdem squamis et minoribus 
laceratis vestitis, sulcatis, 1.5 mm. crassis. Lamina 33 cm. longa, 
3 cm. lata acuminata, versus basin sensim angustata, lineari- 
lanceolata, pinnata, rachi straminea, squamis castaneis fasciculatis 
laceratis variegata, pinnis ca. 45 utrinque, pectinato-confertis, 
Petiolulatis, deflexo-reversis, inaequalibus, 11 mm. longis, basi 6 
mm. latis, thombeo-trigonis, basi posteriore cuneato-abscissis, 
anteriore acute auriculatis subintegris aut minute crenulatis, nervis 
confertis ramosis subflabellatis, soris medialibus, remotis, rotundis, 
a. 5 utrinque. Facie superiore subglabra, inferiore squamis acutis 
adpressis ochroleucis tecta, margine breviter ciliato. Textura firme 
Papyracea, colore supra laete virente, subtus pallidiore lutescente. 
