3 io 
KEYS TO THE FERNS OF BORNEO 
24. H. semifissum Copel. 
Sarawak (Mts. Merinjak and Trekan). 
Endemic. 
25. H. serrulatum (Pr.) C. Chr. 
Dutch Borneo, Kinabalu. 
Malacca, Philippines, New Guinea. 
Kinabalu specimens are smaller than typical ones. 
H. Pveslii (v. d. B.) Ros. may belong here. 
26. H. FRATERNUM HARR. 
Mt. Kinabalu (coll. Miss Gibbs; not in our 
collections). 
Pa nay. 
27. H. Reinwardti v. d. B. 
Dutch Borneo. 
Java, Tidore, Sumatra. 
28. H. sabinifolium Baker. 
Dutch Borneo, North Borneo. 
Java, Sumatra. 
29. H. Neesii (Blume) Hooker. 
Reported from all parts of Borneo. 
Malaya, Ceylon. 
30. H. denticulatum Sw. 
Dutch Borneo, Kinabalu. 
Malaya to India. 
Rosenstock distinguishes a var. complanata (sic) in 
Dutch Borneo. 
Miss Gibbs distinguishes one Kinabalu plant as H . 
aculeatum Racib. The name does not seem valid to me, 
whatever the plant may be. 
There has been so much confusion among the 
preceding two species that occurrence and range are 
altogether doubtful. 
31. H. BRACHYGLOSSUM A. Br. 
Sarawak. 
Java. 
