NEW BORNEAN FERNS. 
345 
mediam serratis, vix 5 mm latis ; soris prope baseos venularum impositis, 
confertis; indusiis setigeris, cucullatis, diaplianis, sinu clauso, vel in- 
terdum peltatis. 
Sarawak, Bongo Mountain, Feb. 1908, leg. Brooks & Hewitt. 
This is superficially quite like D. canescens var. achrosticlioides, but much more 
glabrous, and with the indusia large and persistent. 
Dryopteris Brooksii Copel. spec. nova. 
D. gregis D. basilaris et D. hizonicae Christ, pinnis valde falcatis, 
indusio nullo vel evanescente distincta. 
Ehizomate ut videtur repente, 6 mm crasso, pedeque stipitis paleis 
nigris vestitis ; stipite viride, basi excepta glabro, sulcato, 40 cm alto ; 
fronde 80 cm alta, 15 cm lata; pinnis utroqne latere ea. 30, infimis 
minutis 6 cm remotis, sequentibus sat remotis, maximis 10 cm longis, 
1, cm latis, acuminatis, auricnlatis, sessilibns basibns trnncatis, falcatis, 
leviter lobatis, herbaceis, glabris; lobis 1-2 mm longis, 3-4 mm latis, 
plerumque trnncatis : venulis ca. 4-jugis, infimis anastomosantibus, aliis 
liberis, simplicibus; soris medialibus, orbicularibus, snbimmersis, supra 
conspicuis, indusiis nullis vel caducis. 
Sarawak, Bidi, April, 1908, leg. C. J . Brooks. 
This somewhat suggests D. arbuscula , but is glabrous, and otherwise distinct 
enough . 
MESOCHLAENA R. Br. 
Mesochlaena larutensis (Bedd.) v. A. v. R. 
Sarawak, Bidi, C. J . Brooks 5. 
This specimen agrees with Beddome’s description, except that the stipe is 
longer and the pinnae broader. 
I have hitherto been disposed to regard M. polycarpa as merely an aberrant 
Dryopteris unworthy of generic separation, but the study of this plant, so distinct 
in minor respects, although having in common the peculiar pubescence of pale*, 
hairs and glands, with the indusium character accentuated, makes it clear that 
Mesochlaena is a small group with many characters, instead of a single peculiar 
species. It therefore seems desirable to continue to maintain the genus as a fixed 
and well-marked offshoot of Dryopteris. The two sides of the indusium are often 
unequal. By definition the genus can not easily be distinguished from Athyrium 
§ Gallipteris, to which it is really not nearly related. 
LOMAGRAMMA J. Sm. 
Lomagramma Brooksii Copel. spec. nova. 
Eliizomate alte scandente, stipiteque 4 cm longo paleaceis; rhaehi 
deorsum paleacea, sursum fere glabra et anguste alata; pinnis sterilibus 
ca. 8 cm longis, 15 mm latis, fere integris, coriaceis, nisi ad costas glabris, 
basibns truncatis, apicibus falcatis breviter acuminatis ; venulis immersis, 
areolis costalibus parvis ; lamina viride, venulis infra rubellis ; pinnis 
fertilibus plus falcatis, ca. 3 mm latis, basibus dilatatis non auriculatis. 
Sarawak, Bongo Mountain, leg. Hewitt cC- Brooks. 
Near L. pteroides var. subcoriacea and L. peralcensis Bedd. In the specimen 
sent me the pinna; are sterile throughout the most of the frond, the apical ones 
