TONQUIN FEENS. *00 



li-2 ft. long, 4-5 in. broad, moderately firm in texture, green on 

 both surfaces, glabrous except on the midrib of the pinnae. Pinna 

 very numerous, sessile, lanceolate, subentire ; central 2-2£ in. 

 long, \ in. broad ; lower gradually shorter. Veins very distinct, 

 erecto-patent, forked. Sori very numerous, submarginal, terminal 

 on the veins. Indusium semiorbicular, glabrous. — Near D. 

 Hookeriana. >■ 



1790. D. marginalia Baker. 



46. ,, var. D. calvescens Wall. 



1016. D. rhomboidea Wall. 



73, 79, 1874, 1875. D. Spelunc® Baker, forms. 



40, 105. D. tenuifolia Sw. 



122, 125, 1954, 1972. Lindsay a flabdlulata Dryand. 



1962. Adianlum lunulatum Burm. 



134, 1964. Adiantum Balansse, n. sp. — Kootstock erect. 

 Stipes tufted, castaneous, | ft. long, with a few small brown linear 

 paleae towards the base. Frond lanceolate, simply pinnate, a foot 

 long, above 2 in. broad, moderately firm in texture, bright green 

 and glabrous on both surfaces; rachis and petioles narrowly 

 winged. Pinna quadrate, the lower deflexed, the upper spreading 

 horizontally, the largest fin. broad, entire on the lower and inflexed 

 inner margin, slightly toothed and soriferous on the upper and 

 outer. Veins fine, flabellate. Sori numerous, l-12th to l-8th in. 

 long. Indusium narrow, glabrous. — Near A. Mettenii Kulm. In 

 1964 the pinna are smaller, thinner, and more deeply toothed than 

 hi 134, but it is doubtless another form of the same species. ^ 



135, 1957, 1958. A. caudatum L. 

 1966. A. Capillus-veneris L. 

 133, 1953. A.flabelhdatumh. 

 129. Cheilanthes mysurensis Wall. 

 126. C. tenuifolia Sw. 



57. Pellaa nitidula Baker. 



Ill, 113, 1969. Pteris longifolia L. 



107, 1955. P. cretica L., forms. 



(16*), 1970. Pteris dissitifolia, n.sp.— Stipe pale brown, 

 naked, l|-2 ft. long. Frond subdeltoid, bipinnate, 1£ ft- lon g> a 

 foot broad, green on both surfaces, glabrous. Pinnae few, lanceo- 

 late, erecto-patent, the lowest the largest, forked at the base, their 

 rachises winged throughout ; final segments distant, lanceolate, 

 ascending, £ in. broad, the lower 2-3 in. long, decurrent at the 

 base. Veins distinct, erecto-patent, deeply forked. Sori con- 

 tinuous along both margins of the segments and their decurrent 

 Indusium narrow, glabrous. — Allied to P. longipinnula Wall. 



54. P. quadriaurita Retz., var. P. aspericaidis Wall. v 



1978. P. Grevilleana Wall. 



60. P. biaunta L. 



1959. P. incisa Thunb., var. P. aurita Bhmie. 



1884. Lomaria adnata Blume. 



141. Blechnum orientate L. 



175, 1974. Ceratopteris thalictroides Brong. 



69. Asplenium nidus L. 



t^ 



