Igtt] 
CHRIST—FILICES WILSONIANAE 
35* 
in the same region, Mupin, cliffs 5000 ft., August 1908, no. 2613 (Herb. 
Harvard Univ.). 
I owe to the kindness of Mademoiselle CHARLOTTE TERNETZ, Ph.D., of 
Basel, the drawings of the enlarged details of this plant. 
Polystichum leucochlamys H. Christ, n. sp.—Rhizomate brevi, 
pollicis crassitie, radicoso, 
cum stipite rachique squa- 
mis magnis patentibus 
Ovato-acuminatis 4 mm. 
longis brunneis longe fim- 
briato-ciliatis, in rachi 
sensim diminutis et angus- 
tatis, fasciculatis et lacera- 
tis tecto; foliis fasciculatis, 
stipite 8-12 cm. longo, 
viridi aut stramineo 2 mm. 
crasso. Lamina lanceolato- 
caudata, ad basin angustata, 
rachi debili et arcuata prae- 
dita, 30 cm. longa 4.5 cm. 
lata, apice nuda elongata et 
gemma vivipara instructa, 
pinnata, pinnis 30-40 utrin- 
que, approximatis sive ad- 
modum distantibus, infimis 
diminutis et reflexis, caeteris 
patentibus lanceolato- 
falcatis obtusis rarius acutis, 
Subsessilibus, 2 cm. longis, 
asi o.5 cm. latis, basi 
imaequalibus, postice cune- 
atis, antice acute auriculatis, 
Crenatis aut decumbenti- 
Serratis, nervis valde obli- 
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ia 
2 
. Fic. 1.—Sorolepidium glaciale Christ: 4, 
larger pinnule, showing circular attachment of 
sorus (somewhat too strongly marked), X53 
b, portion of a pinnule (x, end of sorus nervule; 
sporangium stalks still remaining; 2, 
nerve), X15; ¢, large scale, X10; 
scale, X10. 
quis, soris rotundis, marginalibus, uniseriatis margini anteriori 
Msertis, indusiis maximis, 2 mm. diametro, scarioso-hyalinis, 
imbricatis, bullatis, albidis, diaphanis, umbilicatis, margine minu 
