FEBNg OF THE MALAY-ASIATIC REGION. 19 



:i. Lygodium scandens (L.) S\v. 



Dwarf-branch hairy, about 5 mm long, with a small terminal hud 

 buried in crinite hairlike brown scales; pinna? usually 10-15 cm long, 

 [►innate: pinnules 3 to 5 on a side, alternate, simple, deltoid-lanceolate, 

 acute or obtuse, minutely crenulate, cordate or truncate at the base and 

 articulate to a very narrowly winged stalk about 5 mm long: terminal 

 pinnule usually palmately lobed : fertile pinnules usually smaller and 

 rounder than the sterile. From both India and New Guinea 1 have 

 mixtures of sterile pinna' of this species with fertile ones of /,. fiexuosum. 



Africa to Polynesia, north to Formosa and southern China. 



4. Lygodium polystachyum Wall. 



K'achises hairy: dwarf-branch almost obsolete, with a small scaly ter- 

 minal bud; pinna 1 about 20 cm long, pinnate; pinnules short-stalked. 

 3-5 cm long, deltoid-lanceolate, regularly pinnatifid more than halfway 

 to the costa into oblong, rounded segments, thinly herbaceous, glandular- 

 hairy on the veins; fertile segments contracted, each to one spike. 



Birma and the Malay Peninsula. 



5. Lygodium fiexuosum (L.) Sw. 



Dwarf-branch to '! mm long; pinnae pinnate, 80 cm more or less long, 

 often hairy throughout, rachis usually very narrowly winged; lower pin- 

 nules long-stalked, upper ones almost sessile, stalks winged: pinnules 

 entire and narrowly deltoid-lanceolate, or with basal lobes on one side or 

 both (usual form), or pinnate with one pinnule on each side and each 

 of them with a short, broad lobe on the basal side; ultimate pinnules or 

 divisions usually :5 to 7 cm long, sometimes longer, lanceolate, usually 

 acute or acuminate, truncate or cordate at base, the sterile margin finely 

 serrate. 



This is the most variable species of Lygodium. Hooker and Baker in Synopsis 

 Filienm state thai />. mlieifolium is a "form with small neat long-stalked seg- 

 ments." 1 can not distinguish the "/v. aalicifolium Pr." collected at Chittagong 

 by Hooker and Thompson from typical /-. fiexuosum, 



Queensland to India, southern China, and Luzon. 



0. Lygodium mearnsii Copel. Philip. Journ. Sci. Hot. 3 (1008) :i7. 



Dwarf-branch 5 to !) mm long; sterile pinna 1 15 cm more or less long, 

 often wider than long; pinnules 'I or 3 on a side, the lowest with a stalk 

 1 cm or more long, pinnate, rachis winged : pinnules u usually 1 on a side, 

 lobed on each side at the base, and the lobe on the lower side in its turn 

 lobed on one side, terminal segments lanceolate, mostly obtuse, crcnate- 

 serrate into broad, shallow, denticulate teeth, herbaceous, glabrous; suc- 

 ceeding pinnules smaller and more simple: fertile pinnules smaller, 

 broader, and less cut. the spikes broad and Hat. 



Batanes Islands. 



