. Bulletin of the British Museum (Natural History) Botany. A REVISION OF AFRICAN SPHAGNALES 115. Fig. 21 Sphagnum africanum Welw. & Duby. A, transverse section of stem; B, branch cortex; C, adaxial (left) and abaxial (right) surfaces of branch leaf; D, branch fascicle; E, transverse section of leaf; F, branch-leaf apex (D drawn from the type collection; the remainder from Townsend 75/261). surface variable, generally with a few scattered small pores but few to numerous pseudopores, especially in the upper half of the leaf. leaf. Leucocysts biconvex, usually more inflated on the abaxia
. Bulletin of the British Museum (Natural History) Botany. A REVISION OF AFRICAN SPHAGNALES 115. Fig. 21 Sphagnum africanum Welw. & Duby. A, transverse section of stem; B, branch cortex; C, adaxial (left) and abaxial (right) surfaces of branch leaf; D, branch fascicle; E, transverse section of leaf; F, branch-leaf apex (D drawn from the type collection; the remainder from Townsend 75/261). surface variable, generally with a few scattered small pores but few to numerous pseudopores, especially in the upper half of the leaf. leaf. Leucocysts biconvex, usually more inflated on the abaxial side. Chlorocysts variable; in weak specimens more or less oval-rectangular and exposed subequally on both sides of leaf, typically distinctly displaced towards the adaxial face, with very narrow abaxial exposure and here and there appearing immersed. Fertile material not seen. Distribution. Scattered occurrences in montane regions in a zone across southern-central Africa from Huila Province (Angola) to Malawi. West Africa. ANGOLA: Huila, Welwitsch, Iter Angolense 11 (BM, L, PC-type collections); Lubango, Borges 249 (BM). Mlanje/Chimanimani. MALAWI: Mlungasi Falls, 1700 m alt., Hornby 6 (BM). ZAMBIA: Shiwa Ngandu, 'moorland drainage in peat bog, common', 1500 m alt., Greenway 5501 (BM, PRE); Mwinilunga, 1350 m alt., Townsendl5/193 (BM). ZIMBABWE: Mt. Nuza, 'damp hollows between grass clumps', 1700 maft.,G/////am/509B(BM).. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original British Museum (Natural History). London : BM(NH)
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