166 



114 



Fig. 20. D. lonchodes (Eat.) O. Ktze. Pinna X *U; two seg- 

 ments from tlie underside and one from the upperside, X l'/^. 



Type from Cuba orient. Monte Verde, Wright nr. 1007, 1008 (B, S, W) — 

 Specimens from the same region (Vicinity of Baracoa) were collected by Pollard, 

 E. and W. Palmer nr. 239 (W). 



Closely allied to the two preceding species, distinguished by its rigid, grey 

 frond, which upwards is suddenly narrowed into a long pinnatifid apex. Scales of 

 rhizome dark-caslaneous, rigid. Pubescence mainly as in D. L' Herminieri, still the 



costæ beneath are lacking the 

 short hairs, and the upperside 

 hairy on the costæ only. Pinnae 

 sessile with an equal, cuneate 

 base, incised '/2 — ^/a of the way 

 to the costa into falcate, obtuse 

 or acute lobes. Veins about 10- 

 jugate occasionally forked, raised 

 on the upperside; the basal ones 

 connivent to the sinus; keel di- 

 stinct. Sori medial, rather small, 

 with a reddish, persistent, slightly 

 setose indusiuni. — The pinnæ 

 are few, 6 — 8 to a side, the lower 

 ones more or less abbreviated; middle ones 10—15 cm long, 2 — 2^/4 cm broad. 



181. Dryopteris densiloba C. Chr. Index 261. 1905. — Fig. 21a. 



Syn. Nephrodiuin Gardnerianiim Bak. Fl. bras. 1^: 474. 1870; Syn. Fil. 496. 

 Dryopteris Gardneriana O. Ktze. Rev. 3: 812. 1891. 

 Dryopteris supralineata Rosenst. in Fedde, Repert. 8: 277. 1910. 



Type from Brazil, Organ Mts., Gardner nr. 190 (Kew!). Other specimens 

 ■were collected near Rio by Glaziou nr. 15760 (B, H) and Ohans (R), and in the 

 state of Sao Paulo, Serro da mar, Wacket nr. 212 (R = D. supralineata Ros.). 



D. densiloba is apparently a rare species, closely related to D. L'Herminieri, 

 resembling it in size, colour and pubescence. It is of a thinner texture and without 

 aërophore; lower pinnæ not conspicuously reduced, reflexed, the upper ones with 

 a characteristic upcurved apex; pinnæ less incised, the often very close, acute seg- 

 ments being connected by a wing 3—5 mm broad; the keel distinct but not 

 reaching the costa. Veins 9—16 to a side; sori medial or a little above the middle 

 of the vein; indusiuni persistent, shortly pilose (not glabrous as described by 

 Baker). — The basal .segments of the lower pinnæ are much reduced. 



182. Dryopteris incana (Christ) C. Chr. Ind. 272. 1905. 

 Syn. Aspidium incanum Christ, Hedwigia 44: 367. 1905. 



Type from Amazonas: Puritisal, Juruâ Miry, Rio Jurua, E. Ule. Herb. 

 Bras. Amazonas Exp. nr. 5763 (C!). 



