FERNS OF SOUTIIERN CHINA. 281 
Plagiogyria tenuifoiia Copel. sp. nov. 
Stipitibus frondis sterilis 15 cm fertilis 25 cm altis rhachibn sque 
glabris brunneo-stramineis, acute trigonis; fronde sterile oblonga, 16-20 
cm longa, 8-9 cm lata^ vix ad rhachidem in pinnulis adnatis partita; 
pinnulis medialibus 4—4.5 cin longis, 8 mm latis^ acutis, apicem versus 
grosse obtuse serratis^ sinubus angustis interpositis, pinnulis inferioribus 
paullo reductis, infimis valde deflexis, glabris, herbaceis; fronde fertile 
ca. 10 cm alta, pinnis utrinque ca. 12, 2-2.5 cm longis, inferioribus 
stipitatis, rhachidem versus haud hastatis; annulis non interruptis. 
Ma On Shan, 450 m. s. m. Matthew 51. 
A species of the adnata group, recognizable by the moderately reduced lower 
pinnae and thin, rather soft, lamina. P. adnata of Java [teste Blunie), and the 
Philippines, has a four-cornered stipe and rachis, but the plant so called by 
Beddome is said to have them triangular in section. A single fertile frond sent 
by Mr. Kemp may be this species. It has 14 pairs of pinnsc, many of which are 
unequally decurrent on their pedicels. 
Plagiogyria Dunnii Copel. sp. nov. 
Stipite frondis sterilis 20-25 cm alto glabro; ad basin aerophoris 
paucis donato, brunneo-bialato, rhachidcque acute carinatis; fronde 40 
cm alta, 10 cm lata, acuminata, fere ad rhachidem pinnatifida; pinnis 
medialibus 5 cm longis, 5 mm latis, plerumque rectis, acuminatis, apices 
versus serrulatis, glabris, tenuibus, sinubus latitudine pinnas saepe super- 
antibus separatis, inferioribus plus minus diminutis, paullo deflexis, 
supracurrentibus ; fronde fertile 25 cm alta, pinnis pede sterile adnatis, 
utroque latere plusquam 35, infra mediam frondem 5 cm longis sursum 
sensim decrescentibus. 
Ad montem Yenping, 900 m. s. m. Dunn 3934. 
Another species of the adnata group, recognizable by its thin, soft fronds, and 
narrow, widely separated pinnte, the lowest moderately reduced, the sharply keeled 
rachis, and the adnate sterile bases of the fertile pinnules. P. Henryi, the only 
species unknown to me, is said to have the stipe and costa convex beneath, the 
segments broader, and the lowest abruptly reduced to auricles. 
Pellaea nitldula (Wall.) Baker. 
Matthew 28, Kwangtung Prov.: Dunn 3917, Fokien Prov., Ye Shap To, deep 
gorge, alt. 600 m. 
Tliis fern has much the appearance of a Dori/opterts. It was collected in Yun- 
nan bv Delavav. 
Cheilanthes Fordii Baker. 
Fokien Prov., Dunn 3925. 
This species was described by Biiker from Cant<in, and so far as I know 
has never been reported elsewhere. I have the same plant from Formosa, deter- 
mined as C. mysurensis Wall., and the two are certainly very alike, ily C. 
Boltoni of Mindanao may also be too near it, but so far as the single collection 
shows is more slender, with less cut pinnules, and a more iir<tiiounced pale-broAvn, 
double wing on the rachis. O. Fordii was put into the subgenus Adiantopsis by 
Baker, and is called A. Fordii by Christensen. G. Fordii, C. mysuremis, and 
C. Boltoni belong together; but I do not believe that they and Adiantopsis 
radiata have a common immediate origin, in ChcUnnthes or elsewhere. 
