90 18. DAVALLIA, §§ LEUCOSTEGIA. 



texture coriaceous ; veins prominent ; son small, placed at the base of the small 

 iisth..~Mett. Fil. Nov. Oal. No. 73. 



Hab. Aneiteum and New Caledonia.— Near D. aJ^pvm, but the teeth of the fertile 

 fronds much sharper. 



9 'D (Hum.) vestita, Blume ; rhizome wide-creeping, densely scaly ; st. 3-4 in. 

 3. rather scaly below ; fr. 4-8 in. 1., 3-4 in. br., deltoid in outUne ; all, except 

 the upper ^nncs, cut down to a narrowly- winged rachis ; barren frond with the 

 seam, of all, except the lower pinnse, blunt, scarcely toothed;, lobes of the 

 fertile pinnse narrower, sharper toothed ; of the lower ones deeply so ; teaAm-e 

 coriaceous ; sm placed on the teeth of the segments.— .£». Sp. 1. p. 156. t. 41. C. 

 D. bipinnatifida, Blume, HI. 1. c. 



Hab. Java and Ceylon. Probably a mere variety oi'pedala. 



10. D. (Hum.) Cumingii,mc. ; rhizome creeping, scaly ; St. 3-4 in. I., both it 

 and the rachis rather scaly ; sterile fr. about 1 in. each way, deltoid-cordate, cut 

 down nearly to the rachis ; upper pinnce blunt, slightly toothed the lower pair 

 deeply pinnatifid b^flK ; texture coriaceous ; fertile fr. 4-5 in. 1., 3 m. br., the 

 sanie shape, but mJH|iore divided; lowest pinnl. deeply pinnatifid with sharply 

 toothed lobes ; sorW^&ced in the teeth of the segments.—/?*. &p. 1. p. 155. 

 t. 45. B. D. longula, Kunze. 



Hab. Philippine Islands. 



11.. D. (Hum.) hotrychioides. Brack. ; rteome wide-creeping, scaly; **. 3-5 in. 

 1., scaly below ; fr. 6-8 in. 1., 3-6 in. br., deltoid in general outline, decidedly 

 dimorphous, the barren ones with a narrowly-winged rachis ; lowest ipinn(s_ cut 

 down nearly to the rachis, with deep' bluntly-toothed segments ; /erfoVe ^"tomcb 

 much more' finely divided ; pinnl. of the lower pinnse cut down to a narrow 

 rs,chis with narrow sharply-toothed segments almost covered with sori. — Brack, 

 t.2&.fig.-i. 



Hab. Aneiteum and Fiji Islands. 



12. D. (Hum.) Imraywna, Hk. ; rhizome wide-creeping, paleaceous ; st. 4-8 in. 

 1., erect, brown or black, naked, polished ; fr. 6-12 in; 1., 4-6 in. br., ovate, once 

 pinnate ; pimice 7 to 16, the largest about 3 in. 1., 1 in. br., lanceolate, with broad 

 blunt teeth, somewhat unequal-sided and obliciuely truncate at the base below ; 

 texture herbaceous, both surfaces naked ; sori placed in the teeth at a short 

 distance from the margin ; invol. rounded, broader than deep, attached by the 

 base oxAy.—Hh. Sp. I. p. 171. t. 49. A. 



Hab. Dominica, Guadeloupe, and Guiana. 



§§ Leucostegia. Inwl. attached as in Humata, biet smaller, narrower, and 

 thinner. Sp. 13-24. Pinnules uniform on the lower and upper side. Fronds 

 various in size and textv/re, with one exception tri- or quadripinniatifid or pinnate, 

 mostly inlcabiting Polynesia and tropical Asia, several extending to the Himalayas, 

 some to New Zealand, but none either to Africa or America, Aerophorus of Moore 

 includes this and Odontoloma, 



13. D. (Leucos.) hymenophylla, Bakev ; rhizome creeping, scarcely scaly ; st. 

 slender, 34 in. in 1. ; fr. flaccid, 6-9 in. 1., 4-6 in. br., deltoid, cut down to the 

 rachis below, but not above ; lower pinnce distant, the lowest pair broadest and 

 most deeply cut on the lower side ; lowest pinnl. reaching down nearly to the 

 rachis, toothed more than halfway down,, with oblong blunt crenate lobes ; 

 texture membranous ; sori few, marginal in the crenations. Aorophorus hymeno- 

 phyllus, Bedd. Fil. Brit. Ind. t. 96. D. Parishil, edit. 1. 



Hab. Limestone rooks, Moulmein, Rev. O, S. Parish, — A very distinct species. 



