XII, c, 1 Copeland: New Species Borneo Ferns 57 
anastomosantibus ; soris submarginalibus, contiguis, indusio 
glabro. 
Mount Kinabalu, Lobang, Topping 1766. 
As is true of Dryopteris extensa, the position of the sori is sometimes 
evident on the upper surface. 
DRYOPTERIS LITHOPHYLLA sp. nov. 
D. alpestris gregis D. cucullata, robustior, rigide coriacea, 
glabra; rhizomate ut videtur brevi-repente, 5 mm crasso; stipi- 
tibus approximatis, validis, 20 ad 25 cm altis, lignosis, basi 
atropurpureis, sursum fusco-stramineis, glabris, ubique pseudo- 
pinnis usque ad tuberculas abrupte reductis donatis; fronde 25 
ad 30 cm alto, ca. 10 cm lata, acuminata, rhachi et costis superne 
velutinis exceptis glaberrima ; pinnis proximis, subsessilibus 
subfalcatis, erecto-patentibus, usque ad 8 cm longis et 15 mm 
latis, acuminatis, basin versus infimis angustatis, aliis truncatis, 
profunde dentatis, dentibus oblique deltoideis, acutis; venis con- 
spicuis, ca. 10-paribus quarum 4 anastomosantibus ; soris media- 
libus, indusio parvo glabro, fusco. 
Mount Kinabalu, Maraiparai Spur, Topping 1850i, 
Like Gleichenia crassifolia in texture. 
MESOCHLAENA R. Brown 
MESOCHLAENA TOPPINGII sp. nov. 
M. polycarpae similis, pilis rhachidis longioribus et pinnis in- 
ferioribus triangulari-hastatis imbricatis distincta ; stipite usque 
ad pinnas infimas reductas 5 cm alto, paleis pilosis linearibus 
fuscis 10 ad 15 mm longis vestito ; parte inferiore frondis lineare, 
35 ad 55 cm alto, pinnis ibidem hastato-triangularibus, sursum 2 
cm longis, 2.5 cm latis lobis lateralibus recurvatis, late imbricatis ; 
fronde vera 45 ad 60 cm alto, 25 ad 30 cm lata, pinnata, rhachi 
pilis albis 1.5 vel 2 ad 2.5 mm longis vestita ; pinnis fere horizon- 
talibus, sessilibus, 12 ad 15 cm longis, sterilibus 2 cm, fertilibus 
10 ad 15 mm latis, acuminatis, basi subhastato-truncatis, ad 
mediam laminam pinnatilobatis lobis obtusis, lamina papyracea, 
superne ad costas subadpresso-pilosis, ad venulas pilis sparsis 
longis ornatis, inter venulas nudis, inferne costis venis et ve- 
nulis pilosis, lamina inter venulas glandulifera ; venulis ca. 9, 
quarum 2 vel 3 anastamosantibus ; indusio elliptico, praecipue 
ad lineam medialem obscuram dense minute piloso, marginem 
versus pallido, ad marginem ipsum densissime glandulis minutis 
obsito. 
Kinabalu neighborhood, between Keung and Kibayo, Topping 1902. 
Mesochlaerm polycarpa has a much less conspicuous development of the 
