282 GOPELAND. 
Pteris nana Christ in C'Uristeiiseu Index Fii. 603, var. quinquefoliata Copel. 
var. nov. 
A typo statura majore, pinnis lateralibus ad baseos fissis dif ei-t. 
S. China. Matthew 18, 1907. 
Twice the size of Christ's plant, and thus differing from it in the direction of 
the parent species, P. cretica, from which the species remains easily distinguish- 
able. One dwarf frond is trifoliolate, and one large one has a simple intermediate 
pinna on one side. 
Pteris insignis Mett. 
MattheiD 5; Tai Mo Shan, 700 m alt. 
Pteris decrescens Christ Ac. Geog. Bot. (1906) 244. 
Matthew id, Kwangtung Prov. Described from Kouy Cheou. 
Pteris grevllleana Wall. 
Matthew 55. Fokien Prov., apparently a rare fern in China. 
Pteris dimorpha Copel. sp. nov. 
pemmltas 
leis niinutis castaneis apice coronato; stipitibus deorsuin rubidis, sursiixn 
stramineis, supremo anguste alatis, frondis sterilis 12-15 cm, fertilis 
20-35 cm altis; fronde sterile tripartita, glabra, papyracea, laete viride; 
pinnis lateralibus ovatis, faleatis, profunda incisis; segmentis utroque ca. 
5, proximis, oblongis, obtusis, argute serratis, segmento basale non libcro 
-nee non itemm lobato; pinna impare 12-15 cm alta, late lanceolata, 
sensim acuminata, segmentis utroque latere ca. 10, inframedialibus max- 
imis, inferioribus reductis, ad insertionem pinnarum parium decurren- 
tibus; fronde fertile 10-15 cm alta, more P. creticae pinnata, pinnis 
utroque 2, inferiore fissa altera simplice, 6 mm latis, decurrentibus ; 
indusio angiisto, continuo, atro-griseo. 
Kwangtung Prov., China, ad ripas. Matthew 20. 
A very striking species, whose sterile fronds look like miniature P. tripartita, 
while the fertile suggests P. ensiformis and P. heteromorpha. The dimorphism 
extends even to the grouudplan of the fronds. 
Vittaria caricina Christ. 
Kemp, Kwangtung Prov. Known only from the original collection in Kouy 
Cheou. 
w 
r 
Vittaria filipes Christ Ac. Geog. Bot. (1907) 150. 
Matthew 8, Dunn 3762, both from Fokien Province. Dr. Christ has kindly 
compared Dr. Matthew's fern with the type. Both of these collections contain 
forked fronds. Dr. Matthew notes that the fronds shrunk by one-third in drying. 
Vittaria flexuosa Fee, or near it. 
Matthew 49, Tai Mo Shan, 750 m alt. The fronds are 5 mm wide. This 
species was described from India: its range is uncertain. 
Polypodium niponicum Mett. 
Dunn SS15. This species was originally described from immature specimens 
and the diagnosis very exactly fits young fronds in this collection. 
