84 FILICES. [Cyclophorus. 
Fil. (1829) t. 93; A. Cunn. Precur. (1836) n. 178; Raoul Choix (1846) 37 ; 
Hook. f. Fl. Nov. Zel. ii (1855) 44. N. bicolor Kaulf. Enum. Fil. (1824) 128. 
KERMADEC IsLANDS, NortH AnD SoutH Istanps, Stewart Is~tanp, CHATHAM 
Istanps: Abundant throughout. Sea-level to 3500 ft. 
Plentiful in eastern Australia, also found in Norfolk Island and several of the Pacific 
islands. | 
33. GLEICHENIA Smith. 
Rhizome long, creeping, rigid and wiry, often clothed with chaffy 
scales. Stipes tall, erect or scrambling, usually rather slender. Fronds 
once or several times dichotomously forked, usually with a terminal bud 
in the fork, the divisions often spreading in a horizontal plane, ultimate 
branches pinnately divided. Segments of the pinnae rather small and 
broadly ovate or suborbicular, or larger and oblong to linear-lanceolate. 
Veins free. Sori dorsal, placed on the fork or at the tip of an exterior 
veinlet, of 2-12 sporangia. Indusium wanting. Sporangia sessile, splitting 
vertically, completely surrounded by a broad transverse ring. 
Species between 50 and 60, chiefly tropical, but one species extends as far north as 
Japan, and 5 are found in New Zealand. Of these, 1 is widely spread in hot countries, 
3 extend to Australia and New Caledonia, the remaining 1 is endemic, 
* EUGLEICHENIA. Segments of the pinnae small, suborbicular. Sori solitary at the 
apex of a veinlet. 
Segments of the pinnae flat or slightly recurved. Sporangia 2-4, 
near the upper inner angle a * oa .. I, G, etreimata. 
Segments of the pinnae with their margins incurved almost to 
the rhachis, hence pouch-shaped. Sporangia usually 2 .- 2. G. dicarpa. 
** MERTENSIA. Segments of the pinnae linear or linear-oblong, much larger than in 
the previous section. Sori near the middle or at the fork of a veinlet. 
+ No accessory pinnae at the base of the lower forks of the frond. 
Fronds umbrella-shaped, rigid and coriaceous. Segments of the 
pinnae entire, glaucous beneath. Sporangia 2-5 “% .. 3 G. Cunninghami. 
Fronds fan-shaped, submembranous. Segments of the pinnae 
serrulate, green on both surfaces. Sporangia 3-5  .. .. A. G. flabellata. 
tt A pair of spreading or deflexed accessory pinnae at the base of the lower 
forks of the frond. 
Fronds repeatedly dichotomous, the ultimate branches ending 
in a pair of pinnae 3-12 in. long, Pinnulés lanceolate, obtuse, 
glaucous beneath. Sporangia 6-12 ne s .. & G. linearis. 
A. , Cite 
1. G. eireinata Swartz Syn. Fil. (1806) 165.—Very variable in size 
and mode of growth, sometimes stiff, ereet, 1-3 ft. high ; sometimes weak 
and scrambling among other vegetation and attaining a length of 3-5 ft. 
or more. Rhizome long, slender, wiry, often much branched, more or 
less clothed with reddish-brown fimbriate scales. Stipes smooth, slender, 
cylindrical, glabrous or more or less densely scaly and woolly. Fronds 
usually repeatedly dichotomous and proliferous from the lower axils ; 
branches zigzag, spreading, often interlaced ; rhachides generally clothed 
with rusty-red stellate hairs often mixed with fimbriate scales, rarely 
glabrous. Pinnae numerous along the branches, spreading, 4-2 in. long, 
4; in. broad, narrow-linear, uniformly pinnatifid to the base. Segments 
