FEBNS OP THE MALAY-ASIATIC REGION. O 



base gradually narrowed to a broad petiole, subcoriaceous, green, margin 

 crisped when dried, areolae with a secondary interior network; stipe of 

 fertile segment far exceeding the sterile, commonly 10 cm high, "spike'' 

 narrow, 2.5 cm long, mucronate, sporangia 40 on a side. 



Timor. 



The preceding- 7 species constitute with us the subgenus Eu-ophioglossum ; 

 there is no general agreement as to the limitations of the species in this group. 

 Besides those here enumerated, Christensen cites 0. parvifolium Grew & Hook., 

 from Malacca and India; it is not improbably a form of O.pedunculosum, as 

 stated by Matsumura and llayata. There seems to be another species in Minda- 

 nao, but my material does not justify describing it. 0. macrorhisvm K/.e., a 

 South American plant, lias been ascribed doubtfully to the Philippines. 



8. Ophioglossum intermedium Hooker. (Plate I, A.) 



Rhizome terrestrial and on rotten logs; stipe erect, about 10 cm high. 

 merging into the blade; sterile blade about 10 cm high, oblanceolate. 

 entire or lobed near the apex, obtuse veins reticulate without free in- 

 cluded veinlets; fertile segment arising from the sterile and equaling 

 or somewhat overtopping it. 



Borneo, Java, Mindoro, New Guinea. 



9. Ophioglossum pendulum L. 



Rhizome epiphytic, giving rise to a number of pendent fronds; stipe 

 ii]) to 10 cm long, merging into the blade; sterile blade 20 to 100 or 

 even 150 cm long, 2 to 6 cm broad, simple or more often forked, usually 

 sinuate, fleshy-coriaceous but drying thin, veins reticulate with large 

 areoles and no included veinlets; fertile segments one or often a pair. 

 springing from below the middle of the sterile blade, short-stalked, with 

 a fleshy spike 3 to 10 cm or more long. 



Mauritius to India. Formosa, Yakushima. New South Wales, and Hawaii. 



It). Ophioglossum simplex Ridley. 



Terrestrial, rhizome short and tuberous, with few roots; fertile fronds 

 solitary, or two together, slender, flattened, with a blunt apex, 10 to 20 

 cm long, 3 mm wide, dark green; sterile division represented by a very 

 small lateral process, or quite absent; fertile portion of frond about 3 

 cm long, with a stipe of less than this length above the sterile rudiment. 



Sumatra, Sink, wet forests on the Kelantan River. 



± BOTRYCHIUM Swart/. 



Frond pinnate in plan, in most species several times pinnate and 

 deltoid, the fertile segment as much branched as the sterile, or more so; 

 sporangia globose, not immersed, opening by a transverse slit. A genus 



