143 



195 



Species of doubt lu I positiou. 



202. Dryopteris Martini C. Chr. Index 276. 1905. — Fig. 26. 



Syn. Nephrodium connexum Kuhn; Bak. FI. bras. 1-: 489. 1870; Syn. Fil. 502. 



Type from Cayenne, leg. Martin (B!). 



I have seen only an imperfect specimen of this, which shows it being a very 

 distinct species but of a very doubtful position. It is with the greatest doubt only 

 I place it here under Cyclosoriis; it could as 

 well be referred to Steiropteris. Still it does not 

 resemble at all any species of Steiropteris, while 

 it in general habit closely resembles certain forms 

 of D. oligophylla. It differs from all American 

 species of Cyclosoriis by the presence of a cal- 

 lose aërophore at the base of the pinna? beneath 

 and by the sporangia being deciduously setose. 



Rachis quadrangular, finely puberulous by 

 hamate, deciduous hairs. Pinnæ up to 30 cm F'S- 26. D. Martini c. Chr. Fragment 



1 1 o u J » u from the middle of a pinna, X *li,: sesj- 



lons by 3 cm broad, papyraceous; costæ above ' . ' " 



^ -^ . ' f fj ' meiits X I'li (orig.). 



somewhat strigose, costæ and costulæ beneath 



setose by spreading, stiff, unicellular hairs; scales and glands none. Margins cut 

 about two-thirds of the way down into falcate, acute segments with the edges 

 somewhat revolute. Veins simple, about 16 to a side, those of the lower 4—5 

 pairs connivent to sinus, below which is a narrow, cartilagineous and hairy mem- 

 brane but no keel extending to the costa as in Steiropteris, the lowermost pair of 

 veins generally truly united in the leaf-tissue and sending an excurrent branch to 

 the membrane. Sori inframedial, furnished by a subpersistent, reddish, slightly 

 setose indusium. Sporangia with 1 — 2 short, deciduous hairs. — I have not seen 

 the lower pinnae and can not say whether the basal lower segments are reduced 

 or obsolete as in D. oligophylla. 



Unknown species of ,^' Cyclosorus. 



1. Aspidiuni albicaiile Fée, 8 mém. 102. 1857 — Mexico, Schaffner nr. 245. 



2. Aspidiuni conspersoides Fée, 1. c. 105 — Mexico, Orizaba, Schaffner nr. 335 

 and 463. 



3. Aspidinni pallidum Fourn. Mex. PI. 1: 96. 1872; Dryopteris chlorophylla C. Chr. 

 Ind. 257 — Mexico, Orizaba, Bourgeau nr. 2779 bis. These three are all, I 

 believe, forms of what I have called D. aiigescens var. puberula. 



4. Aspidiuin Orizabae Fée, 1. c. 104 ; Dryopteris Orizabae C. Chr. 281 — Mexico, 

 Orizaba, Schaffner nr. 464. Probably D. oligophylla var. pallescens. 



5. Aspidiuni pauper Fée, 1. c. 103 — Martinique, Mil. Rivoire. A small form of 

 D. patens'? 



6. Nephrodium oppositum Fée 1. c. 108 — Martinique, Mile. Rivoire. Probably 

 D. mollis. 



