202 



MEMOIRS OF THE NEW YORK BOTANICAL GARDEN [Vol. 8, No. 3 



Kota-kota District: Nchisi Mountain, common on banks of streams in rain- 

 forest, 1-1.5 m. high, leaves arched and spreading from short erect caudex, 10-15 

 cm. high, 1500 m., July 28, 1946, 17012. Cholo District: Cholo Mountain, one 

 clump in a rain-forest gulley, 2 m. high, 1200 m., Sept. 23, 1946, 17752. Pan- 

 tropical with a few geographic variants. 



Diplazium arborescens (Bory) Sw. Syn., Fil. 92. 1806. 



Cholo District: Cholo Mountain, occasional in rain-forest gullies, 180-250 

 cm. high, leaves few, erect from a short stout caudex, petiole 50-60 cm. long, 

 1200 m., Sept. 23, 1946, 17758. Also in San Thome and Mascarenes. 



Dryopteris bergiana (Schlechtend.) Kuntze, Rev. Gen. PI. 2: 812. 1891. 

 Lastrea bergiana (Schlechtend.) Moore, Ind. Fil. 86. 1858. 



North Nyasa District: Nyika Plateau, gregarious on wet banks of a grass- 

 land stream, leaves pendent, hanging over the water, 2300 m., Aug. 14, 1946, 

 17219. Mlanje District: Mlanje Mountain; Luchenya Plateau, common in forest 

 openings, more or less 1 m. high, 1820 m., July 1, 1946, 1656€; ibid., one example 

 in forest undergrowth, 80 cm. high, leaves several, arched, rhizome erect, 1890 m., 

 July 7, 1946, 16711; ibid., leaves dimorphous, the fertile more erect, and usually 

 much longer than the sterile, common on edges of streams in dense forest shade, 

 80-120 cm. high, rhizome erect, 1890 m., July 7, 1946, 16712. Tropical and 

 South Africa, Madagascar. 



Dryopteris dentata (Forsk.) C. Chr. Vid. Selsk. Skr. 6: 24. 1920. 



Cyclosorus dentatus (Forsk.) Ching, Bull. Fan. Mem. Inst. Biol. Bot. 8: 206. 1938. 



Kota-kota District: Nchisi Mountain, common ground fern in rain-forests, 60-70 

 cm. high, 1400 m., July 30, 1946, 17045; ibid., frequent on banks of streams in 

 rain-forest, about 1 m. high, leaves several, erect from a thick erect rhizome, 

 1500 m., July 28, 1946, 16999. An aggregate species, as generally understood, oc- 

 curring throughout tropical and subtropical Africa, Asia, and America. 



Dryopteris kilemensis (Kuhn) Kuntze, Rev. Gen. PI. 2: 813. 1891. 

 Dryopteris lastii (Bak.) C. Chr. Ind. Fil. 274. 1905. 



North Nyasa District: Nyika Plateau, montane forest undergrowth, 80-150 cm. 

 high, 2350 m., Aug. 17, 1946, 17285. Mlanje District: Mlanje Mountain; Luchenya 

 Plateau, common locally in forest undergrowths, 80-120 cm. high, leaves several, 

 arched and spreading from a short erect stalk, 1890 m., July 7, 1946, 16707. 

 Tropical east Africa. 



Dryopteris lanuginosa (Willd. ex Kaulf.) C. Chr. Ind. Fil. 273. 1905. 



Ct&nitis lanuginosa (Willd. ex Kaulf.) Copel. Gen. Fil. 124. 1947. 



Kota-kota District: Nchisi Mountain, common in wet gullies in rain-forest, 80- 

 150 cm. high, leaves arched, 1550 m., July 30, 1946, 17040. Cholo District: 

 Cholo Mountain, occasional in rain-forest gullies, 1.5-1.8 m. high, leaves few, 

 arched and spreading from a stout caudex, 20-30 cm. high, 1200 m., Sept. 23, 

 1946, 17757. Also in west and South Africa and Mascarenes. 



Dryopteris oligantha (Desv.) C. Chr. Ind. Fil. Suppl. 3: 93. 1934. 



Dryopteris inaequalis (Schlechtend.) Kuntze, Rev. Gen. PI. 2: 813. 1891. 



Zomba District: Zomba* Plateau, rain-forest undergrowth, uncommon, 70-80 

 cm. high, rhachis horizontal, leaves few, arched, 1400 m., May 28, 1946, 16055. 

 Throughout tropical and South Africa. 



Dryopteris prismatica (Desv.) C. Chr. Dansk Bot. Ark. 7: 202. 1932. 

 Dryopteris caudiculata (Sieb.) C. Chr. Dansk Bot. Ark. 7: 50. 1932. 

 Cylosorus prismaticus (Desv.) Ching, Bull. Fan Mem. Inst. Biol. Bot. 10: 248. 1941. 



