CATALOGUE OE EERES. 
75 
### Sporangia oval or oblong , sessile , opening vertically 
and longitudinally ; apex striated , the striae forming a 
more or less complete ring , which is sometimes nearly 
obsolete. 
Tribe IX. SCHIZMI, J. Sm. 
Sporangia oval or oblong, opening on the exterior side, pro- 
duced on contracted racemes, or on terminal or marginal spiculse- 
form appendices, or the fertile frond is wholly contracted, or sub- 
contracted ; apical ring complete. 
112. LYGODIUM, Sw. 
(Ilydroglossum, JVilld.) 
Vernation uniserial, distant and sarmentose, or contiguous 
and csespitose. Fronds scandent, twining, extending to an inde- 
finite length ; pinnae conjugate, palmate-lobed, pinnatifid, or pin- 
nate. Veins forked, free, extending beyond the margin, forming 
sporangiferous spiculse composed of two rows of imbricate, indu- 
siate cysts, each cyst containing an oval resupinate sporangium 
attached by its inner side, opening longitudinally on its outer 
side. 
1. la. palmatum, Sw. ; Schk. Fit. t. 140. — North America. 
2. la. flexuosum, Sw. Ophioglossum flexuosum, Linn. Lyg o- 
dium dichotomum, Sw. ; Hoo/c. et Girev. Ic. Fit. t. 55. — 
East Indies and Malayan Archipelago. 
3. la. scandens, Sw. — East Indies. 
4. la. Japonicum, Sw. Ophioglossum Japonicum, Sw. — China 
and Japan. 
5. la. articulatum, A. Fich. in Voy. d' Astrolabe , t. 15. — New 
Zealand. 
113. LYGODICTYOH, J. Sm. 
(Lygodii sp., SchJc. Hydroglossi sp., Willd.; Presl.) 
Vernation and general habit as in Lygodium , differing in the 
venation being reticulated. 
