145 



197 



The figure quoted aliove gives a good iilustralion of Ihe comnioii form of lliis 

 characteristic species, which scarcely can l)e confounded with any other Mexican 

 Dryopteris. hi general hahil it resemhles forms of D. nornialis or of D. augescens, 

 but its generally less cut pinnæ, pluricellular hairs, linear to oblong, exindusiate 

 sori and setose sporangia mark it at once. Veins simple, 3 6 to a side, the two 

 basal ones running to sinus. Galeotti's and Liebmann's specimens belong to a 

 small form having the most pinnæ confluent at base and scarcely incised more 

 than halfway down to the costa, the lower ones often distinctly reduced. This 

 form occurs at altitudes of 2 — 3000 m, while the 

 species at lower altitudes grows considerably larger. 

 I have seen specimens measuring 30 cm in length 

 (lamina only) and 20 cm in breadth and having 

 the pinnæ incised two-thirds of the way down. 

 Such large forms are exactly intermediate between 

 the typical form and the var. procurrens. — D. 

 pilosa seems to be confined to Southern Mexico; 

 I have seen the following specimens; 



ChinanUa, Depart. Puebla, Lieiimann (H) — Puebia, Arskne 

 (RB, CC) - Jalisco, ne;ir Guadalajara, .')()0n', Pringle 

 nr 2.589 (B, S, Wi, 934(; (W) — Morelos. Sierra de 

 Tepoxtlan 750Ü', Pringle nr. 112«5 (B, H, W) — 

 Jalisco, at Rio Blanco, Rose and Painter nr. T.'iO'i 

 (W) — Mexico, Schmitz nr. 367 (B). 



Fig. 27. D. pilosa (M. et. G.) C. Chr. 



var. procurrens (Fée) liak, — Pinna 



X '(.=.; segments X l'lj. 



var. procurrens (Fée) Bak. Syn. Fil. 

 515. 1874. — Fig. 27. 

 Syn. Gymnogramme procurrens Fée, 8. mém. 

 78. 1857. 

 Gymnogramme pilosa var. major Fourii. Mex. pi. 1: 73. 1872. 

 Dryopteris pseiido-totta Christ, Bull, l'herb. Boiss. II. 7 : 415. 1907. 

 DitTers from the type by its broad (2— 2' i cm) pinnæ, which are deeply 

 cut, most of them free at base, the lower ones not reduced, often shortly petiolate. 

 Veins 6 — 10 to a side, often furcate, somewhat prominent beneath. 



- Forêt de la déserta Vieja, Hourgeau nr. !I21 (H, S) — Ixtacciluiatl, Purpus nr. 1003 (W) - Oaxaca, 

 Cerr.) San Felipe, Gonzalez et Conzatti nr. 711 (W) - Chiapas, S. Cristobal, G. Mukch 

 nr. .') and '2'.i (C . 



'204. Dryopteris dasyphylla C. Chr. Ind. 260. 1905. 



Syn. Gymnoyramma villosa Link, Hort. Berol. 2: 51. 1833; Fil. sp. 137. 



Based on plants cultivated in Hort. Berol. I have seen Link's type specimens 

 (B) and several others, but all from cultivated plants. In handbooks of ferns it is 

 said to be a Brazilian species, but I have never seen a specimen from Brazil. Link, 

 however, says (in Fil. sp. 137): "Hab. in provincia Caracas, Brasilia'.'" It has, I 

 think, never been stated, where the species grows wild. 



1). K. U. Vidensk, Sclsli. SUr., 7. Række, iialiiivKleiisU. os iii;iUu'm. Aid. X. 2. 26 



