1953] 



PLANTS COLLECTED IN NYAS ALAND 



209 



Loxogramme lance olata (Sw.) Pr. Tent. Pterid. 215. 1836. 

 Polypodium loxogramme Mett. Polypodium 112. 1857. 



North Nyasa District: Nyika Plateau, terrestrial, in montane forest, 2250 m., 

 Aug. 16, 1946, 17241*; ibid., epiphytic in montane forest, rare, 2350 m., Aug. 17, 

 1946, 17287. Mlanje District: Mlanje Mountain; Luchenya Plateau, epiphytic in 

 primary forest, leaves pendent, fleshy, 1890 m., July 12, 1946, 16805; ibid., 

 epiphytic in deep forest shade, 1890 m., June 30, 1946, 16532. Cholo District: 

 Cholo Mountain, gregarious on mossy lower trunks of rain-forest trees, 1400 m., 

 Sept. 20, 1946, 17665. Tropical and South Africa and Mascarenes. Some Asiatic 

 forms appear to be closely allied. 



VITTARIACEAE 



Vittaria isoetifolia Bory, Voy. Afr. 2: 325. 1804. 



Mlanje District: Mlanje Mountain; Luchenya Plateau, several tufts on mossy 

 trunks of rain-forest trees, leaves pendent, 1750 m., June 24, 1946, 16414; ibid., 

 frequent epiphyte in forest, leaves dark green, 70-90 cm. long, numerous, pendent, 

 1890 m., June 30, 1946, 16529. Tropical and South Africa and Mascarenes. 



Vittaria volkensii Hieron. Bot. Jahrb. 53: 428. 1915. 



Cholo District: Cholo Mountain, epiphytic, high on rain-forest trees, leaves 

 pendent, channelled, stiff, 1350 m., Sept. 20, 1946, 17672. Tropical east Africa. 



LYCOPODIACEAE 



Lycopodium carolinianum L. var. tuberosum (A. Br. & Welw. ex Kuhn) Nessel, 

 Barl. 274. 1939; F. Ballard, Am. Fern Jour. 40: 74. 1950. 

 Zomba District: Zomba Plateau, 1700 m., May 31, 1946, 16113*. Mlanje Dis- 

 trict: Mlanje Mountain; Luchenya Plateau, local on open boggy slopes, 10-15 cm. 

 high, prostrate and shortly creeping, 2100 m., June 27, 1946, 16468. Tropical 

 Africa. 16468 shows presence of tubers and is more robust than the average. 

 Nessel would probably include it in "var. Welwitschii Hert." The species as usu- 

 ally considered is almost certainly an aggregate and is spread over most temper- 

 ate and tropical regions. 



Lycopodium cernuum L. Sp. PI. 1103. 1753. 



North Nyasa District: Nchena-chena, on wet ground in Bracbystegia wood- 

 land, 40-100 cm. high, 1340 m., Aug. 21, 1946, 17373. Tropics and subtropics 

 in old and new worlds. A very common species. 



Lycopodium clavatum L. Sp PI. 1101. 1753- 



Mlanje District: Mlanje Mountain; Luchenya Plateau, forming dense tangled 

 pale green beds, abundant locally on grassy edges of forest, 2100 m., June 27, 

 1946, 16482. A common world species, restricted in the tropics to high altitudes. 

 It is undoubtedly a composite species. The British form has a chromosome num- 

 ber of n - 34 (Manton, I.e. 247). 



Lycopodium dacrydioides Bak. Handb. Fern Allies 17. 1887. 



Vrostachys dacrydioides (Bak.) Hert. ex Nessel, Barl. 188. 1939. 



Mlanje District: Mlanje Mountain; Luchenya Plateau, epiphytic in forest, 

 stems pendent, up to 1 m. long, many in a clump, 1880 m., June 28, 1946, H.E. 

 Anthony 16527. Cholo District: Cholo Mountain, pendent, one small clump on an 

 exposed rock in rain-forest, 1400 m., Sept. 20, 1946, 17667. Tropical and South 

 Africa. 



Lycopodium ophioglossoides Lam. Encyc. 3: 646. 1791. 



Vrostachys ophioglossoides (Lam.) Hert. ex Nessel, Barl. 238. 1939. 



