328 82 



Gal. Mém. Foug. Mex. 78 tab. 22. 1842 belongs to D. pteri folia rather than to D. rudis, 

 and judging from the bad figure it agrees in pubescence better with the former. 

 Still D. pterifolia is not found north of Panama, while D. rudis is a common 

 species in Mexico, at least in the region (Mirador) where Galeotti found A. pilosa. 

 (Conf. Liebmann: Mexicos Bregner, in Vid. Selsk. Skr. Kjobenhavn V: 1. 205. 1849). 

 I, therefore, think it better to reduce A. pilosa to a synonym of D. rudis. A greater 

 part of the figures in the work of Martens & Galeotti must for identification of 

 species be critically used. 



79. Dryopteris macradenia (Sod.) C. Chr. Ind. 276. 1905. 



Syn. Nephrodium macradenium Sodiro, Recensio 47. 1883; Cr. vase. quit. 

 242. 1893. 



Type from Ecuador, leg. Sodiro (HC). 



Ample. Stem 60—80 cm. long, more than 1 cm. thick, finely and deciduously 

 hairy. Rachis like costæ and veins on both sides rather densely but very shortly 

 pubescent, texture rigidly papyraceous, colour brown, 2—3 pairs of reduced, auri- 

 culiform pinnæ, middle pinnæ VI-2 dem. long by 2 cm. broad, lanceolate with a 

 large aerophore at their base. Segn^ents close, patent, acute, the basal ones some- 

 times a little enlarged. Veins indistinct, about 15 to a side; sori near the margin; 

 indusium not seen, according to Sodiro it is glandulose. 



80. Dryopteris horrens Hieron. Hedwigia 46: 341 tab. 6 fig. 14. 1907. 



Type from Ecuador: prope La Boca del Mundo Nuevo, 2600 m. leg. Stiibel 

 n.338 (HB!). 



A peculiar species. Only in the mature frond does the crenate revolute margin 

 cover the sori. 



81. Dryopteris mertensioides sp. nov. — [Fig. 50]. 



Costa Rica: Navarro, 1400 m., leg. C. Wercklé 1905 (HC). 



Eudryopteris rhizomate? Stipitibus validis, 3— 4 dem. longis, superne bisulcatis, 

 sparse pubeseentibus, niox glabris, fusco-stramineis, ad basin fuscescentibus et 

 squamis 1 dem. longis, deciduis vestitis. Lamina laneeolata, 1 m. vel ultra longa, 

 2^3 — 3 dem. lata, ad basin abrupte attenuata, versus apicem acuminatum pinna- 

 tifidum sensim deerescente, coriacea, pallide viridi, supra glabra vel ad costas setis 

 paucis sparse instrueta subtus ad costas costulasque pilis longis albidis patentibus 

 hirta, eglandulosa, marginibus pilis longis dense ciliatis, bipinnatifida ; rachibus 

 stramineis, sparse pubeseentibus, mox glabratis. Pinnis numerosis, patentibus, sub- 

 approximatis, suboppositis, inferioribus 5— 6 jugis valde reductis, infimis glanduli- 

 formibus (Typus IV), maximis 12—15 em. longis, vix 2 cm. latis, lineari-oblongis, 

 sessilibus, acuminatis, ad basin aerophoro squamis longis atro-brunneis, deciduis 

 dense vestito instruetis, inaequalibus. Laeiniis numerosis, integris, patentibus ala 

 1 mm. lata connectis, anterioribus 8 mm. longis, posterioribus ad 12 mm. longis, 



