96 18. DAVALLIA, EUDAVALLIA. 



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

 Both vary much in division, but they are universally regarded 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 Trichomanes. D. coniifolia is quite 

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

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



41. D. epiphylla, Blume, not Forster ; rhizome thick, fibrillose ; st. 4-6 in. 1., 

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

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

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

 mersed, one or two carried into each tooth ; sori smalt, suhmarginal, half-cup- 

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

 /3, pulchra, Hk. Sp. I. 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. 



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

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

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

 with 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. 1. p. 167- D. poly- 

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



Hab. Khasya and Mishmee, N. India, Malayan Peninsula, Hongkong, and Java. 

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



43. D. Mauritiana, 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 the 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. Sir William Hooker was latterly disposed to consider this an 

 extreme form of D. solida. 



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 pinnae 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 

 them. 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 pinnse lanceolate, 2-3 in. 1., 

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

 to the rachis ; 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. I. p. 170.?. 55. C. 



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

 what more finely cut and veined. 



