DAVALLIEJE SCHIZOLOMA. 59 



and obtusely auricled on the upper at the base, subcoriaceous, glabrous; 

 veins inconspicuous, forked, costa wavy; sorus slightly interrupted, or 

 continuous around both sides and the apex. 



E-wi-ig River, Paragua, Merrill 769. 



Malaya. 



(2) S. heterophyllum (Dry.) J. Sm. Rhizome short, creeping, clothed 

 with fine, brown scales; stipes clustered erect, 5 to 15 cm. high, naked, 

 green above; frond 10 to 20 cm. high, pinnate and lanceolate or bipinnate 

 and deltoid; pinnae semiorbicular and fixed by the middle of the straight 

 side with radiate venation and continuous submarginal indusium around 

 the upper side, 'or triangular with indusium along two sides, or trapezoidal 

 with usually continuous indusium along upper and outer sides, outer 

 acropetal angle rounded or acute, margin entire or finely toothed, papyra- 

 ceous, glabrous; veins free except in sorus, or anastomosing more freely. 

 An exceedingly variable fern, some of whose forms are hardly distinguish- 

 able from Lindsaya. 



Luzon, Cuming 275; Mount Mariveles, Copeland 1375, Whitford 1162, 

 Topping 351. 



Mauritius to Honkong and Malaya. 



(22) LINDSAYA Dryander. 



Rhizome short or creeping, stipes not articulate to it; fronds at least 

 pinnate; the lower half of each pinna (or pinnule) almost or quite 

 undeveloped, the "midrib" therefore running along the entire lower margin; 

 sori along or near the upper margin; indusia fixed by the base. Small 

 ferns, terrestrial or epiphytic,, superficially resembling Adiantum. 



I. Veins free. 



2. Fronds once pinnate. 



3. Upper edge of pinnae entire or lobed less 

 tban half way to costa. 

 4. Rhizome stout and scandent. 



5. Simple sori about as deep as 

 broad. 

 6. Upper margin, of pinna 



entire or lobed (1) L. repent 



6. Pinna cleft nearly to 



rachis (2) L. hymenophylloides 



5. Sori narrow. 



6. In an unbroken line (3) L. scandens 



6. In a broken marginal 



line (4) L. pectinata 



6. Submarginal in the lobes.. (5) L. Merrillii 

 4. Rhizome not stout and scandent. 

 5. Pinnae less than 1 cm. long. 



6. Frond very narrowly 



linear (6) L. gracillima 



6. Frond not narrowly linear. 

 7. Stipe flexuous, pin- 

 nae somewhat au- 

 ricled (7) L. ovata 



