KEYS TO THE FERNS OF BORNEO 
303 
2 . LYGODIUM Swartz. 
a. Half-pinnae forked. 
b. Fertile segments like sterile 
bi. Fertile segments contracted 
a*. Half-pinnae pinnate. 
b. Leaflets not articulate 
fc*. Leaflets articulate to stalks 
I. L. BORNEENSE V. A. V. R. 
Dutch Borneo (Mt. Uja). 
Local. 
1. L. borneensc. 
2. L. circinnatum. 
3. L. flexuosum. 
4. L. scandens. 
The same collection is apparently responsible for 
reports of L. digitatum and L. semihastatum from Borneo. 
Var. Sarnavindce v. A. v. R. is from Samarinda; it 
has larger leaflets. 
2. L. circinnatum (Burm.) Sw. 
Common. 
Malaya to India and Queensland. 
3. L. FLEXUOSUM (L.) Sw. 
Common. 
Malaya to China and Queensland. 
4. L. SCANDENS (L.) Sw. 
Common. 
Palseotropical. 
The last two species have been confused. The very 
common one in Sarawak is L. flexuosum. 
FAM. V. GLEICHENIACB^I. 
GLEICHENIA Smith. 
a. 
Segments round and very small 
EUGLEICHENIA. 
a* 
Segments oblong to linear, larger 
DICRANOPTERIS 
Subgenus I. EUGLEICHENIA . 
a. 
Scales up to 1 mm long, very lacerate 
i. C. circinnata. 
a*. 
Largest scales 1.5—2 mm. long 
2. G. vulcunica. 
I. 
G. CIRCINNATA SwtZ. 
Kinabalu, Dutch Borneo. 
Malaya to New Zealand. 
Baker described a rather naked form with long 
pinnae, from Kinabalu, as var. bovneensis. 
