272 44. NEPHRODIUM, § LASTREA. 



SagenicE, not in general habit, but by its polislied, dark-coloured stem, and by the sori 

 being usually terminal on branch veins. A. zeylaniowm, F^e, is probably this species. 



72. N. (Last.) si/rmaticum. Baker ; st. tufted, 1-2 ft. 1., naked, stramineous ; 

 fr. 3-4 ft. 1., 12-18 in. br. ; pinnw 6-9 in. 1., Ij-lj in. br., cut down to a broadly- 

 winged rachis into slightly-toothed lobes 2-3 lin. br., the lower ones stalked, the 

 lowest not much reduced ; texture subooriaceous ; rachis and both surfaces naked ; 

 'sdnlets V2.-\h on a side, nearly all forked ; swi nearer the edge than the midrib. 

 — Aspid. Willd. N. spectahUej Hk. S;g. 4. jt>. 115. 



Hab. N. India to Ceylon, Philippines, and Malaccas. — There is a form with medial 

 sori, and more distant and fewer (6-8) veinlets. - This also has the sori often terminal on 

 the branch veinlets, and not unfrequently the groups join at the sinus. Willdenow 

 supposed it to be a South American plant, doubtless by mistake, 



73. N. (Last.) Filix-mas, Rich. ; st. tufted, 6 in. or more 1., more or less 

 densely clothed with lanceolate scales ; fr, 2-3 ft. 1., 8-12 in. br. ; pinnae lan- 

 ceolate, 4-6 in. 1., j-1^ in. br., cut down very nearly to the rachis into close, 

 blunt, regular subentire lobes 1^-2 lin. br., lower ones rather shorter than the 

 others ; texture herbaceous ; rachis more or less scaly, under surface naked ; 

 lower veinlets subpinnate ; invol. large, convex. — Hk. Brit. F. t. 16. — (3, N. affine 

 {F. & M. sub Aspid.) ; pinnae not so blunt and with a space between them, 

 narrower and the edge more or less deeply toothed. — y, N. elongatum, Hk. & Gr. ; 

 fr. sometimes 3-4 ft. 1., 2 ft. br., subdeltoid, quadripinnatifid ; lower pinncB 1 ft. 

 or more 1., 4-6 in. br. ; pinnl. close, lanceolate, cut down nearly to the rachis 

 into oblong crenated lobes ; invol. ^-\ lin. br. — Ic. Fil. t. 234. — S, N. cochleatum, 

 Don ; sterile and fertile fr. different, the pinnl. of the former broad-leafy, the 

 lower ones deeply lobed, those of the latter much contracted, the two rows of 

 large sori with prominent convex invol. often 1 lin. br., occupying their whole 

 surface. — Arthrobotrys, Wall. Hk. Sp. 4. p. 116. Dryopteris, Schott. 



Hab. a and /3 throughout Europe and Asia, from Lapland to Japan and the Malay 

 Isles, ascending to the Himalayas to 15,000 ft. ; Madeira, Sandwich Isles ; America, from 

 Greenland along the Bocky Mountains and Andes to Pern, y, Azores, Madeira, Guinea 

 Coast, Cape Colony, Masoaren Isles, Abyssinia, E. Indies, S. United States. S, Hin- 

 dostan and Malaccas. — The extremes as described dififer widely, but we. cannot draw any 

 clear line between them. A. Schimpericmum, camariense, jAidbvidcmmn, and marginatvm, 

 none of them seem clearly separable from y, which might be looked for in group 7. 



**** Pinrus cut nearly or quite down to the rachis into toothed or pinnatifld 

 lobes. Sp. 74-87. 



74. N. (Last.) Preslii, Baker ; st. 6-9 in. 1., slender, deciduously fibrillose ; 

 fr. 6-9 in. 1., 4-5 in. br., lanceolate-deltoid ; ■wp^er pinnae lanceolate, close, lowest 

 pair deltoid, the upper pinnl. 2 lin. br., blunt, entire, the lower ones pinnatifld, 

 with similar lobes and broad uncut centre ; texture subooriaceous ; rachis 

 fibrillose, both swrfaces naked ; smi about 6 to the lower lobes, dorsal on tlie 

 veins, nearer the midrib than the edge. — L. P£opinq«iajP»'e«/ & J. iSm. {in part). 



Hab. Philippines, Cummg, 255. — This agrees in cutting with the small forms of 

 N. membrmiifolmm, but the texture is thicker, and the sori are dorsal, not far from the 

 base of the obscure veinlets. 



75. N. (Last.) Goldieanum, Hk. ; sh tufted, 1 ft. 1., clothed with large dark 

 scales below ; fr. 2-3 ft. 1., 1 ft. or more br., ovate-deltoid ; lower pirmcs 6-9 in. 

 1., 2 in. br., cut down nearly to the rachis into linear-lanceolate subfalcate, 

 slightly-toothed lobes ; rachis and both surfaces naked ; texture herbaceous ; 

 veinlets obscure, forked ; sori in rows near the midrib. — Hk. Sp. 4. p. 121. 

 Hk. & Gr. Ic. t. 102. 



Hab. Canada to Kentucky. — This comes nearest N. Filix-mas, which is not found in 

 the Northern United States. 



