KEYS TO THE FERNS OF BORNEO 
311 
2. TRICHOMANES Linnaeus. 
a. Frond more or less entire, minute, with 
oblique false veins 1. HEMIPHLEBIUM. 
a*-. Frond cut, but not pinnately, minute, with¬ 
out false veins 2. GONOCORMUS. 
112. Frond pinnately cut, false veins present, 
small ferns. 
b. Frond not glaucous 3. DlDYMOGLOSSUM. 
b 1. Frond glaucous 4. PLEUROMANES 
a 3 . Frond pinnate, without false veins, not 
cut to the costa into very narrow segments. 
b. Pinnae equal, broad, obtuse, either sub¬ 
entire or cut part way to the costa 
between the coarse veins, which thus 
protrude as narrow segments, texture 
firm; rhizome stout, erect 6. CEPHALOMANES. 
6l Texture softer, pinnae usually unequal, 
and always differently cut or rhizome 
creeping ' 5 . EUTR1CHOMANES - 
tf 4 . Frond pinnate, without false veins, cut to 
the costa into capillary segments 7. LEPTOMANES. 
Subgenus I. HEMIPHLEBIUM. 
a. Frond cordate-orbicular 1. T. Motleyi. 
at. Frond not cordate-orbicular. 
b. Frond about 5 mm. long 2. T. beccariamcm. 
b*. Frond 15 mm. long or more 3, T. sublimbatum. 
1. T. MOTLEYI V. d. B. 
Labuan, Sarawak. 
Malaya to India, Formosa and Queensland. 
2. T. beccarianum Cesati. 
Sarawak. 
Local. 
3. T. SUBLIMBATUM K. Mull. 
Sarawak. 
Malaya to Khasia and New Guinea. 
Subgenus II. GONOCORMUS . 
a. Margin not ciliate. 
b. Rac'nis of well developed plants bearing 
a succession of part-fronds. 
c. Part-fronds round, lobes regular 4. T.minutum , 
c*. Lobes very irregular in length. 
d. Cell-wails irregularly thickened 5. T.pvoliferum 
c 
