9G 18. DAVALLIA, §§§§ EUDAVALLIA. 



Australia, Madagascar, Angola, Fernando Po, Johanna Island. — Very near D. soUda, 

 Both vary much in division, but they are universally regai-ded as distinct. The best 

 character for this seems to be the presence of numerous intermediate spurious venules 

 between the veins proper, as in various species of Tricho manes. D. coniifolia is quite 

 intermediate between J), data and the type. D. patens, Swz. (Hk. Sp. Fil. 1. p. 167), must 

 probably also be referred here, and D. Jlaccida, J. Smith, is a tender, finely-cut form. 

 The oldest name for the species is Adiantum denticulatum, Burm. 



41. D. c/jz/>7;j///a, Blume, not Forster ; rhizome thick, fibrillose ; st. 4-G in. 1., 

 erect, firm ; fr. 12-15 in. 1., 6-9 in. br., deltoid-lanceolate, tripinnatifid ; main 

 rachis hardly at all w^inged; pinnl. of the lowest pinnse lanceolate, 1^ in. 1., \ in. 

 br. ; scgm. narrow^, mucronate, sharply toothed ; texture coriaceous ; veins not im- 

 mersed, one or two carried into each tooth ; sori small, submarginal, half-cup- 

 shaped, with the sharp mucro of the tooth extending beyond them. — D. elegans, 

 /3, pulchra, Hk. Sp. l.p. 165. t. 43. A. D. corniculata, Moore, Ind. Fil. 2. p. 292. 



Hab. Java and Malayan Peninsula. — Still more coriaceous than D. elegans, with more 

 finely-divided segments, very small sori, and sharp teeth protruded considerably beyond 

 them. Forster's eprphylla is our elata. 



42. D. divaricata, Blume ; rhizome creeping, stout, clothed with linear ferru- 

 ginous scales ; st. firm, erect, 6-12 in. I. ; fr. 2-3 ft. 1., tripinnatifid ; lower pinnce 

 often 12 in. 1., by 6 in. br. ; segm. deltoid, cut down to the rachis in the lower part, 

 witli linear-oblong sharply-toothed lobes ; texture coriaceous ; veins uniform, 

 not conspicuous ; sori half-cupshaped, placed obliquely as regards the central 

 veins in the teeth at some distance from the edge. — Hk. Sp. l.p. 167. D. poly- 

 antha, Hk. Sp. l.p. 168. t. 59. A. 



Hab. Khasya and Mishmee, N. India, Malayjin Peninsula, Honkong, and Java. — 

 Best distinguished from solida and elegans by the position of the sori. 



43. D. maiiritiana, Hk. ; rhizome stout, wide-creeping, densely fibrillose ; st. 

 6-8 in. 1., stout, erect ; fr. 1-2 ft. 1., 12-15 in. br., deltoid, quadripinnatifid ; 

 main rachis very slightly winged above ; ultimate pinnl. 3-4 in. 1,, 2 in. br., 

 lanceolate-deltoid, cut down to the rachis in tlie lower part, with deeply inciso- 

 pinnatifid lobes ; texture coriaceous ; sori copious, marginal, placed in the teeth 

 of the ultimate segments ; invol. semicylindrical. — Hk. Sp. 1. p. 164. t. 55. B. 



Hab. Mauritius. — Probably a mere variety of elegans. 



44. D. Griffithiana, Hk. ; rhizome stout, clothed densely with pale-brown or 

 whitish linear scales ; st. erect, wiry, 4-6 in. 1. ; fr. 9-12 in. 1., 4-8 in. br., 

 deltoid, tri- or quadripinnatifid ; pinnl. of the lower pinnse lanceolate-deltoid, 

 2-3 in. 1., 1 in. or more br, ; lower segm. toothed on the barren frond, cut down 

 nearly to the rachis in the fertile one ; texture coriaceous ; sori very large (1 lin. 

 br.), cupshaped, submarginal or marginal, with the teeth projecting beyond 

 i\\%m.—Hk. Sp. 1. p. 168. t. 49. B. 



Hab. Himalayas of Khasya, Assam, Bootan, &c., Malayan Peninsula and China 

 (Amoy, Chusan, Formosa).— Distinguishable from all the other species of the group by 

 its large broadly-cupshaped sori. 



45. D. pyxidata, Cav. ; rhizome stout, creeping, densely clothed with pale- 

 brown linear scales ; st. strong, erect, 4-6 in. 1. ; fr. 9-18 in. 1., 6-9 in. br., 

 deltoid, tri- or quadripinnatifid ; pinnl. of the lower pinnae lanceolate, 2-3 in. 1., 

 1 in. br., with deltoid or oblong scgm., the lowest of which are cut down nearly 

 to tiie racliis ; texture coriaceous ; sori deeply half-cupshaped in the teeth, with a 

 broad space outside them, which projects like a horn beyond them. — Hk. Sp. 

 Fil. l.p. 110. t. 65. C. 



Hab. New South Wales.— Very near D. canariensis in habit and texture, but some- 

 what more finely cut and veined. 



