82 American Fern Journal 



Dryopteris (Stigmatopteris) cyclocolpa (Christ) C. 

 Chr. Ind. 260. 1905. 



Polypodium cyclocolpon Christ, Bull. Herb. Boiss- 



4: 659. 1896; Bull. Soc. Bot. Belg. 35: 216. 1896. 



Costa Rica: Forets de Tsaki, Talamanca. Tonduz 

 9480. 



A fragment, consisting of a pair of pinnae of the type- 

 coilection, in the U. S. National Herbarium (no. 832908), 

 shows that this species is a genuine Stigmatopteris. 

 Regarding Stigmatopteris as a valid genus, which it 

 certainly is, the species must be called Stigmatopteris 

 cyclocolpa (Christ) C Chr., comb. nov. It is very 

 different from the other Central American species of 

 Stigmatopteris, but is closely related to S. prasina 

 (Bale.) C. Chr., from Peru. The lamina is bipinnate- 

 tripinnatifid; pinnae lanceolate, 25-30 cm. long 8-10 

 cm. broad, fully pinnate in the lower two-thirds. Pin- 

 nulae 4-5 cm. long, 10-12 mm. broad at the base, sessile, 

 the upper broadly adnate and decurrent, acuminate, 

 with a serrate apex, lobed %-% of the way to the mid- 

 rib. Lobes rectangular, 2-4 mm. broad, serrate, espec- 

 ially at the obtuse or truncate apex. Veins mostly 4- 

 jugate in the lobes, simple. Sori supramedial. Leaf 

 grass-green, firmly herbaceous or membranous, dis- 

 tinctly pcllucido-punctate, without hairs, but with some 

 red-brown narrow scales on the lower part of the mid- 

 rib of the pinnae beneath. 



Stigmatopteris cyclocolpa differs from 8. prasina in its 

 much larger pinnae, these with manv free pinnules 

 which are more deeply incised, with serrated lobes. 



In my monograph (page 7!)) I have mentioned under 

 b. prasina a plant from Ecuador collected by Sodiro. 



Ihis is very closely related to 8. cyclocolpa and may be 

 a form of the same species. It differs in its furcate 

 veins, its more deeply, but not so sharply serrated lobes, 

 and its larger pinnule>. 



_ChristMias mentioned Polypodium pratimm Bak. as 



'Bull. Soc. Bot. Belg. .'}.-,: L >17. 1896 



