266 TONQUIN FERNS. 



long, about a foot broad, bipinnatifid, witb a broad wing to the main 

 racbis reaching nearly or quite down to the base. Lower pinnae 

 tbe largest, deltoid, much produced on the lower side ; central pinnae 

 lanceolate, equilateral, 1^-2 in. broad, deeply pinnatifid, with ovate 

 or ovate -lanceolate arcuate secondary segments. Veins anasto- 

 mosing copiously in hexagonal areolae. Sori copious, scattered, 

 minute, irregular in form. Iudusium minute, glabrous, fugacious. — 

 In habit between cicutarium and decurrens. >■ 



87. N. variolosum Baker. 



53. N. decurrens Baker. 



21, 49, 82, 85, 1800. N. cicutarium Baker, forms. 



37. Nephrolepis cordifolia Presl. 



43. N. exaltata Schott. 



1809, 1810. N. acuta Presl. 



1823. N. ramosa Moore. 



149. Oleandra Cumingii J. Smith. 



1868. Polypodium punctatum Thunb. 



1885. P. urophyllum Wall, var. uniseriale. — Sori uniserial 

 between the main veins. 



(64*), 47. Polypodium (Gonioptekis) megacuspe, n. sp. — 

 Rootstock wide-creeping, § in. diani. ; palea3 small, lanceolate, 

 dense, membranous, brown. Stipes distant, naked, stramineous, 

 15-18 in. long. Frond oblong, simply pinnate, a foot long, half as 

 broad, thin, green and glabrous on both surfaces ; racbis naked, 

 stramineous. Pinnae about 11, sessile, entire, oblong, with a very 

 large cusp, 4-5 in. long, 1|-1|- in. broad. Main veins arcuate, 

 very distinct, parallel, about ^ in. apart. Sori 10-12 between the 

 midrib and margin, uniserial between the main veins. — Near P. 

 urophyllum. J- 



1878. P. subdigitatum Blume. 



1822. P. amcenum Wall. 



1936. P. rostratum Hook. 



1935. P. superficial* Blume. 



(305*), 148. Polypodium (Phymaiodes) tonkinense, n. sp. — 

 Rootstock slender, short-creeping ; paleae lanceolate, dark brown. 

 Stipes scarcely any. Frond oblanceolate, subcoriaceous, glabrous, 

 entire, 5-6 in. long, under an inch broad above the middle, 

 narrowed thence gradually to the base. Veins in copious hexagonal 

 areolae with free included veinlets. Sori copious, scattered irregularly, 

 confined to the upper half or third of the frond. — Near the Philip- 

 pine P. tenuilose, Kunze. f 



1926. P. membranaceum Don. 



1949. P. Pkymatodes L. 



1880. P. dilatatum Wall. 



140. P. Fortunei Kunze. 



161, 162. P. adnascens Sw. 



1931, 1933. P. rarium (Blume). 



1930. P. floccigerum Mett. 



156, 157. P. acrosticJwides Forst. 



1882. Gymnogramme javanica Blume. 



65, 66. G. Wriyhtii Hook. 



