Helminthostachys. | OXLVIÍ. FILICES. 691 
Segments lanceolate, 3 to 5 in. long, 1 to 1 in. broad, entire or denticu- 
late, more or less decurrent and confluent at the base. Veins sip Sali 
simple or forked, parallel mg diverging from the midrib, all fre 
the peduncle at ye as jolig above the barren lamina. Clusters of 
Spore-cases short and crowded, each cluster usually terminating in a 
crestlike oy ee cael spore-cases ?)—Bedd. Ferns 38. Ind. t. 
69; F. Muell. Frag 
Que land. ROGA. Bay, F Hill, Dallaehy ; Port Denison and Daintree 
Es Fitzalan ; Rockhampton, Thoz 
Trise IT. ManarrIE5.— Fronds cireinate in vernation. Spore-cases 
without any perfect ring, opening in 2 valves or in a ep gemis po 
sessile or united, in 2 rows, in sori forming marginal lobes t 
rhachis or segments, or placed on their under surface. 
4, LYGODIUM, Swartz. 
Climbing ferns, with long twining stems. Fronds pinnately or in 
species not Australian dichotomously divided, inserted on the common 
m in divaricate pairs, usually on a very short common stalk or 
a 
eM 
(D 
A tropical genus widely spread over the New as well as the Old World. Of the 
three Australian € $ed lay a wide range in the Old World, the third is only 
in the Pacific Isla 
Frond, the petiole. 
n : ae B aet Pinnules articulate on the p E eae 
Fronds simply pinnate or the lower pinne again i pinn innate. 
Pinnules articulate on the petiole. “Veins often 
anustomosin 
Fronds more or less ss bipinnate. Pinnules not articulate, eeu 
often decurrent on the petiole. Veinsall free . « 3, L. japonicum. 
m d reticulatum. 
l. S. scandens, Swartz; Hook. and Bak. Syn. Filic. 437.—Ste 
rather slender, but twining and climbing to i considerable extent, 
o more, from cordate-ovate to oblong-lanceolate or hastate, 
varying fr i l ften shortly lobed at the base, and 
VS I 
i dis t Esential an. Sori m Pages the » margin of 
pinnules sue to the barren ones, | sometimes all very eher Mir i 
Ó pairs of spore-cases, sometimes in the same specimen 
