20 
COPELAND. 
7. Lygodium japonicum (Thunb.) Swtz. 
Dwarf-branches 2 to 4 mm long; pinnae up to 25 cm long, ancl 15 cm 
broad, usually about two-thirds this size, rachis very narrowly winged ; 
pinnules decreasing upward in size and complexity, the lowest long- 
stalked, pinnate; pinnules 11 1 or 2 on a side, the lower stalked, lobed at 
the base and the lobes often auricled on one side, end segments longest, 
linear, obtuse, herbaceous, usually somewhat hairy, margin finely toothed ; 
fertile pinnae sometimes tripinnate, with small and numerous ultimate 
pinnules of which lateral ones are as broad as long, lamina reduced and 
sometimes almost wanting ; spikes usually 3 or 4 mm long. This also is a 
very variable species. Specimens with partially fertile pinnae are some- 
times hard to distinguish from L. fiexuosum: but as a rule the linear 
sterile segments and strong dimorphism make this species very easily 
recognized. Korean plants have most finely dissected sterile fronds. 
Specimens from India and Java have the sterile segments narrow but too 
short to be linear. The Philippine plants have most ample and least 
compound fertile pinnae. A specimen from Negros has spikes reaching 
a length of 2 cm. 
Japan and Korea to India and Australia. 
8. Lygodium matthewi Copel. Philip. Journ. Sci. Bot. 3 (1908) 36. 
The giant of the genus with rachis 5 mm thick, and pinnae more than 
50 cm long; dwarf branch 0 mm long, with very large terminal bud; 
pinnules 1 or 2 on a side, long-stalked, cordate, dichotomously forked or 
palmate; terminal pinnules cuneate-cordate, dichotomously palmate with 
5 or 6 segments which are 20 to 30 cm long, 3 to 4 cm wide, acuminate, 
irregularly serrate, herbaceous, venation copiously reticulate, fertile 
pinnae unknown. 
Luzon, Mount Maquiling, alt. 300 m. 
9. Lygodium merrilli Copel. Philip. Journ. Sci. Bot. 2 (1907) 146, PI. IV. 
(Plate XII.) 
Rachis 1.5 mm thick, hairy or glabrescent; dwarf-branch 0 mm long; 
pinnae up to 35 cm long : pinnules 2 or 3 on a side, the lower long-stalked, 
forked or rarely dichotomously palmate, decurrent-truncate, terminal 
pinnule forked or rarely twice forked, segments up to 15 cm long and 
17 mm broad, obscurely serrate, membranaceous, glabrous; spikes about 
5 mm long and 1.5 mm broad, on the tips of rather prominent teeth, 
which do not appear in the cut with the original description ; venation 
reticulate. 
Mindoro, alt. 300 m. 
2. SCHI2AEA Smith. 
Rhizome under or on the ground ; fronds crowded, erect, sterile parts 
terete, or simple and grass-like, or dichotomous: sterile segments or spike 
born at the top; sporangia, in a row along each side of the unbranched 
vein, protected by the reflexecl margin. A genus of about 25 species. 
