I. FIL1CES. 
347 
B. Sori naked, without any involucre. 
Sori separate, globose, rarely oblong 22. Polypodium. 
Sori linear or oblong, usually confluent, often in branching lines . 23. Gymnogramme. 
Sori continuous near the margin, sometimes partially covered by 
the recurved edge of the frond 24. Nothochl^na. 
Tribe V. Osmundeae. Capsules much larger than in the preceding sections , distinct, 
clustered on the back of the frond, forming irregular sori, voithout involucre, sessile or 
shortly stalked, 2-valoed vertically, with a short, transversely striate, lateral or sub- 
terminal areola. 
Frond opaque, coriaceous 25. Todka. 
Frond translucent, membranous 26. Leptopteris. 
II. Capsules in spikelets or panicles, or confluent into lobed or many-celled 
masses. 
Tribe VI. Sehizaeacese. Capsules distichously arranged on spikelets , ovoid, sessile, 
attached by their sides, with radiating stria from their crown. 
Spikelets projecting from the margins of fertile flahellate pinnse. 
Stipes scandent 27. Lygodium. 
Spikelets distichous, pinnately arranged at the top of a simple stipes 
or of the flattened branches of a flahellate frond 28. Schiz^ja. 
Tribe VII. Capsules on the back of the pinna, very coriaceous, connate into a 
2,-valved, oblong or linear lobed sons, with no ring or reticulations. 
Fronds very large, 2-pinnate 29. Marattia. 
Tribe VIII. Ophioglossese. Capsules globose, coriaceous, 2-valved, separate or con- 
fluent in a spike, or on the branches of a compound panicle, which is borne on a stipes and 
is apart from the frond . — Vernation not circinate. 
Frond ovate, simple. Capsules on a simple terminal spike . . . 30. Ophioglossum. 
Frond pinnate or 2- or 3-pinnate. Capsules on a pinnate, or 2- or 
3-pinnately-branched panicle 31. Botrychium. 
1. GLEICHEHIA, Smith. 
Rhizome wiry, rigid, creeping. — 'Stipes erect, often tall and slender. 
Frond dichotomously branched, with a terminal bud at each fork ; branches 
sometimes whorled, simple forked or pinnate. Pinnae pinnatifid ; segments 
flat or concave, sometimes so much so as to form an involucre. Sori of 1-6 
sessile capsules, which burst longitudinally, and are girt by a complete ob- 
lique ring. 
A considerable tropical' and southern genus of Ferns, not found in Europe or temperate 
North America, and only in subtropical and tropical Asia. 
1. Sori on the tips of the veinlets. Ultimate lobules of pinna small, short, broad. 
Lobules of frond flat or incurved. Sori exposed 1 . G. circinata. 
Lobules of frond pouch-like. Sori concealed in the pouches . . . 2. G. dicarpa. 
2. Sori on the middle or forks of the veinlets. Ultimate segments of pinnae linear. 
Frond rigid, coriaceous ; segments entire, glaucous below . . . 3. Q-. Cunninghamii. 
Frond membranous ; segments serrulate, not glaucous below . . . 4. G. flabellata. 
1. G. circinata, Swartz.- — G. semivestita, Labill. ; — FI. N. Z. ii. 5. 
Rhizome slender, chaffy. Fronds erect, very slender, 1-3 ft. high, dichoto- 
mously branched ; stipes very slender, brown, more or less hairy scaly and 
chaffy or glabrous ; branches very narrow, 6-1 2 in. long, forked and pinnate. 
Pinnae 1^—2 in. long, i n - broad, uniformly pinnatifid to the base, the 
lobules semicircular flat or incurved, shining above, not pouch-shaped as in 
