282 
COPELAND. 
Pteris nana Christ in Christensen Index Fil. 603, var. qu inquefol iata Copel. 
var. nov. 
A typo statura majore, pinnis lateralibus ad baseos fissis differt. 
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 insign is Mett. 
Matthew 5, Tai Mo Shan, 700 m alt. 
Pteris decrescens Christ Ac. Geog. Bot. (1906) 244. 
Matthew 19, Kwangtung Prov. Described from Kouy Cheou. 
Pteris grevilleana Wall. 
Matthew 55. Fokien Prov., apparently a rare fern in China. 
Pteris dimorpha Copel. sp. nov. 
Rhizomate adscendente 4 mm c-rasso, radices permultas emittente, pa- 
leis mimitis castaneis apice coronato ; stipitibus deorsum rubidis, sursum 
stramineis, supremo anguste alatis, frondis sterilis 12-15 cm, fertilis 
20-25 cm altis; fronde sterile tripartita, glabra, papyracea, laete virjde ; 
pinnis lateralibus ovatis, falcatis, profunde incisis; segmentis utroque ca. 
5, proximis, oblongis, obtusis, argute serratis, segmento basale non libero 
nec non iterum 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 angusto, 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 groundplan of the fronds. 
Vittaria caricina Christ. 
Kemp. Kwangtung Prov. Known only from the original collection in Kouy 
Cheou. 
Vittaria filipes Christ Ac. Geog. Bot. (1907) 150. 
Matthew 8, Dunn 3162, 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-tliird in drying. 
Vittaria flexuosa Fee, or near it. 
Matthew i/9, 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 3815. This species was originally described from immature specimens 
and the diagnosis very exactly fits young fronds in this collection. 
