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



Pellaea quadripinnata (Forsk.) Prantl, Bot. Jahrb. 3: 420. 1882. 



North Nyasa District: Nyika Plateau, open place in montane forest, 2350 m., 

 Aug. 17, 1946, 17300.* Arabia, east and South Africa, Mascarenes. 



Pellaea swynnertoniana Sim, Ferns S. Afr. ed. 2. 213. 1915. 



Zomba District: Zomba Plateau, one clump in a rock crevice in Brachystegia 

 woodland, 45 cm. high, leaves stiff, grey-green, very brittle, 1500 m., June 4, 

 1946, 16227. Related to P. calomelanos (Sw.) Link but differs by its ivy-leaf- 

 shaped pinnules and brown, not blackish, stipes and rachises. Tanganyika through 

 Rhodesia and Nyasaland to Portuguese East Africa. 



Pityrogramma aurantiaca (Hieron.) C. Chr. Ind» Fil. Suppl. 3: 138. 1934. 



North Nyasa District: Nyika Plateau, one clump in a grassy bog, about 30 cm. 

 high, 2340 m., Aug. 19, 1946, 1733 L Tropical Africa. 



Pteridium aquilinum (L.) Kuhn in Deck. Reisen Ost-Afr. 3*: Bot. 11. 1879. 



North Nyasa District: Nyika Plateau, abundant on grassy edges of bogs and 

 on disturbed ground on open grassland, 60-100 cm. high, killed back by forest, 

 2340 m., Aug. 19, 1946, 17327. All temperate and tropical regions, where it fre- 

 quently constitutes an abnoxious weed. Adopting Tyron's nomenclature (Rhodora 

 43- 1941) the present plants become "P. aquilinum ssp. typicum Tryon var. typi~ 

 cum Tryon." Presumably this should now read "P. a. ssp. aquilinum var. aquili- 

 num.'* Its distribution is said to be Europe, Africa, and islands. 



Pteris quadriaurita Retz. Obs. Bot. 6: 38. 1791. sens lat„ 



Kota-kota District: Nchisi Mountain, common ground fern in primary rain- 

 forest, 1-1.5 m. high, leaves few, rhizome ascending, 1550 m., July 30, 1946, 

 17039. Mlanje District: Mlanje Mountain; Luchenya Plateau, forest undergrowth, 

 180 cm. high, leaves many, arched from a short thick erect caudex, 1890 m., July 

 6, 1946, 16694. Cholo District: Cholo Mountain, a characteristic fern of the rain- 

 forest undergrowth, 1-1.2 m. high, leaves few, arched, rhizome ascending, 1200 

 m., Sept. 24, 1946, 17794. A broad concept of this species "complex is adopted 

 here. In this sense the species is pantropical. 



DA VALLIACEAE 



Arthropteris monocarpa (Cord.) C. Chr. Cat. PI. Madag. Pterid. 32. 1932. 



North Nyasa District: Nyika Plateau, common epiphyte in montane forest, 

 rhizomes climbing, to 2 m. long, leaves distant, 2340 m., Aug. 19, 1946, 17336. 

 Zomba District: Zomba Plateau, very abundant, climbing on trees and creeping on 

 rocks in riverine rain-forest, leaves thin and soft, 30-40 cm. long, 1400 m., May 

 28, 1946, 16050; ibid., abundant on rain-forest floor, 60-80 cm. high, rhizome 

 creeping and branching underground in rain-forest floor, 1450 m., June 3, 1946, 

 16175. Mlanje District: Mlanje Mountain; Luchenya Plateau, locally gregarious in 

 forest undergrowth, 40-60 cm. high, leaves arched, rhizome creeping, 1890 m., 

 July 6, 1946, 16703; ibid., low epiphyte in forest, 30-50 cm. high, 1820 m., July 

 5, 1946, 16672. Throughout tropical east and South Africa and in the Mascarenes; 

 not so common in west Africa. An oblique articulation is present in the lowermost 

 third of the stipe. The sori are solitary on the segments and there are usually no 

 lime-spots on the upper surface of the fronds as in the related A. orientalis 

 (Gmel.) Posth. 



Nephrolepis cordifolia (L.) Pr. Tent. Pterid. 79. 1836. 



N. undulata (Afz. ex Sw.) J. Sm. Bot. Mag. 72: Comp. 35 (bis). 1846. 



Zomba District: Zomba Plateau, local on moist sunny banks of creeks, gre- 

 garious, 50-70 cm. high, leaves erect, pale, tubers produced on rhizomes, 1500 



