27 79 /g-/^«^ 



(uJ i L I B R A 

 25. Stigmatopteris prasina (Bak.) C. Chr. comb. nov. l^ 



Syn. Polypodiiim punctatiim Spruce, Hk. spec. fil. 4: 262, 1862. 



Poly podium prasiimm Bak. Syn. Fil. 312, 1867; ?Sod. Cr. vase. quit. 292 



Dryopteris prasina C. Chr. Index 285, 1905. 

 Type from Peru, Tarapoto, Mt. Guayrapurima, leg. Spruce nr. 4719 (Kew!, 

 also RB). I consider Spruce nr. 4719 the type-number of this species, to which the 

 first name of the plant, Pol. pundatum Spruce, was given by Spruce; his nr. 5714 

 from Chimborazo (Kew, R B) belong to St. ichtiosma. S. prasina is fully bipinnate; 

 the lower pinnulæ are free but broadly adnate to costa, lobed nearly half of the 

 way down to the midrib into square or rectangular, entire or faintly serrated lobes; 

 veins pinnate in the lobes, 3 — 4 to a side, simple. Sori about medial, without an 

 indusium-like scale as in S. ichtiosma. — Plant very large, up to 2 m. high; stipe 

 at base with many squarrose scales, which are up to 3 cm. long. Rachis, costæ 

 and costulæ beneath richly flbrillose by reddish scales. Pinnæ 35 cm. or more 

 long, lanceolate, short-stalked, 6 cm. broad at the middle; pinnulæ about 4 cm. 

 long, 1 cm. broad. Lamina thin, grass-green, paler beneath, very distinctly pellu- 

 cido-punctate. 



A specimen from Ecuador, Andes of Quito, Sodiro (B) may be specifically 

 different. It is Pol. prasinum Sod. Cr. vase. quit. 292. It is much larger than the 

 Peruvian type and less scaly. The pinnæ are distinctly stalked, the pinnules ses- 

 sile, 10 cm. long by 2 cm. broad, incised -'/i of the way down to the midrib into 

 obtuse, serrulate segments. Veins in about 5 pairs to a segment, as a rule forked 

 near the middle, the anterior branch very short and soriferous. In texture, colour 

 and immersed glands the specimen agrees with S. prasina. 



Group 2. Peltochlaena. (Species 26—28) ')• 



26. Dryopteris varians (Fée) O. Ktze. Rev. 3: 814, 1891; C. Chr. Ind. 299. 



Fig. 2 c. 



Syn. Nephrodinm varians Fée, 11 mém. 88 tab. 24 fig. 2, 1866. 



Type from Trinidad, leg. Germain (Herb. Mus. Paris!). — Bot. Gard. Herb. 

 Trin. nr. 1225 (W); Aripo-Savannah „im schattigen Walde an Bäume kletternd", 

 Othmer nr. 116 (Herb. Monac, C, CG). British Guiana, Essequebo, Appun nr. 

 27 (B, RB). 



This is a most distinct species. Leaves somewhat dimorphous, the sterile 

 ones being considerably broader than the fertile ones, about 10 cm. long by 2 cm. 

 wide, short-stalked, truncate at the upper base but scai'cely anricled, cuneate at the 

 lower one, the margins subentire or répand or broadly serrulate, always sharply 

 serrate towards the apex. Fertile leaves with pinnæ scarcely more than 1 cm. 

 broad, very variable in cutting, being from almost entire (the serrated apex ex- 



') Tlie species of this group I liave not named Stigmatopteris but use the names of Index Filicum. 



11* 



