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KEYS TO THE FERNS OF BORNEO 
e*. Pinnae entire or crenate 27. A.confcrtum. 
d 1 . Terminal pinna not very different 
from others 29. A. pallidum. 
b 5 . Frond pinnatifid or pinnate at base 30. A. porphyrorachis. 
£>6. Frond merely toothed 31. A . subserratum. 
Veins anastomosing. 
b. Frond bipinnate 9. A. esculentum. 
£> r . Frbnd pinnate, pinnae cut or lobed 15. A. accedens. 
bz. Frond pinnate, pinnae entire or serrate. 
c. Pinnae broadly lanceolate. 
d. Rachis stramineous 32. A . fraxinifolium. 
d 1. Rachis ebeneous 35. A.Cumingii. 
a. Pinnae ovate, or frond simple and 
cordate. 
d. Pinnae 6 to 10 pairs 33. A. pariens. 
dl. Pinnae few if any 34. A . cor difolium. 
1. A. biseriale (Baker) comb. nov. 
Aspleniuiii biseriale Baker, Trans. Linn. Soc. Bot. 
11 4 (1894) 252. 
Kinabalu, alt. about 1000 m. 
Specimens collected by Mrs. Clemens and by Mr. 
Topping are intermediate between A. japonicnm and 
A. Petersenii, which are not very distinct species. The 
stipe is densely chaffy-hairy, rachis less so, base of costa 
slightly so and lamina glabrous. This is too stout a 
plant, particularly as to the rhizome, well to be called 
A. grammitoides. 
2. A. macrocarpum (BL) Bedd. 
Kinabalu (Paka cave and Maraiparai spur). 
Java, Philippines, India, China, Japan. 
3. A. Clemensee Copel. n. sp. 
Summit of Kinabalu. 
Endemic, but similar to other derivatives of 
A. nigripes in Celebes and Luzon. 
4. A. atropurpureum Copel. n. sp. 
Kinabalu, Paka cave to summit. 
Endemic. 
There is another quadripinnatifid Athyrium of which 
Mrs. Clemens has collected fragments on the lower slopes 
of Kinabalu. 
