27 



273 



2. Dryopteris Stierii (Ros.) C. Chr. Ind. 664. 1906 — [Fig.3|. 



Syn. Gymnogramme Slierii Rosenstock, Festschrift Albert von Bamberg 64, 

 Gotha 1905. 



Type from Brazil: Prov. Rio Grande do Sul, S. Cruz, leg. A. Stier & C. Jür- 

 gens n. 175 (HR!). 



A Brazilian representative of D. concinna, which it resembles in having setose 

 sporangia and in its short, narrow pinnæ, but it is of a thinner texture, is consi- 

 derably snialler and wants the characteristic short pubescence on the rachis of 

 D. concinna: it is besides nearly quite glabrous. In texture and in its closely 

 placed segments it somewhat resembles D. Lorentzii, but it is smaller, eglandulose 

 and with all the veins simple. Dr. Rosenstock referred it first to § Leptogramma, 

 to which the species has no near affinity. The exindusiate sori can be a litlle 

 elongated, but such subgymnogrammoid sori may be found in many species of 

 true Enriryopteris, and the fact that the sporangia are pilose does not indicate 

 any alliance with § Leptogramma, the most species of this group having glabrous 

 sporangia. 



Fig. 4. D. Lorentzii (Hier.) ('.. Chr. Krom the tjpe specimen. 



3. Dryopteris Lorentzii (Hier.) C. Chr. Ind. 276. 1905 — [Fig. 4]. 



Syn. Aspidium Lorentzii Hieron. Engl. Jahrb. 22: 368. 1896. 



Type specimen from Argentina: Las Penas, leg. P. G. Lorentz n. 4 (HB!). 

 Other specimens from the same country: Estancia S. Teodoro, Th. Stuckert n. 2351 

 (HC). — Sierra Chica de Cordoba, Hieronymus (HB). 



Near to D. argentina, characterized by its closely placed and broad segments 

 and by its very thin, nearly pellucid lamina. Veins 5 -8, not rarely furcate. In- 

 dusium small, ciliate. 



4. Dryopteris argentina (Hier.) C. Chr. Ind. 253. 1905. 



Syn. Aspidium argentinum Hieron. Engl. Jahrb. 22: 367. 1896. 



Type specimen from Argentina (HB!). 



Specimens examined: 



Argentina: Quebrada de Choya, F. Schickendaniz n. 357 (HB) — (jrope San 



•MV 



