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Pycnanthus angolensis : ウィキペディア英語版 | Pycnanthus angolensis
''Pycnanthus angolensis'' is a species of tree in the nutmeg family, Myristicaceae. It is native to Tropical Africa.〔(''Pycnanthus angolensis'' (Welw.) Warb. ) Germplasm Resources Information Network (GRIN).〕 Its English language common names include African nutmeg, false nutmeg, boxboard, and cardboard.〔(''Pycnanthus angolensis''. ) AgroForestryTree Database. World Agroforestry Centre.〕 In Africa it is widely known as ''ilomba''.〔Richter, H. G. and M. J. Dallwitz. 2000 onwards. (''Pycnanthus angolensis''. ) Commercial timbers: descriptions, illustrations, identification, and information retrieval. DELTA – DEscription Language for TAxonomy. June, 2009.〕 ==Description== This evergreen tree grows up to 40 meters tall and usually up to a meter wide, sometimes up to 1.5 meters or more. The trunk is straight and cylindrical with fissures and flaking bark. The sap is honey-colored and turns red in time. The branches are in whorls. The leathery leaves are up to 31 centimeters long by 9 wide. The blades have pointed tips, heart-shaped bases, and thick midribs. They are hairless on top and coated with rusty, feltlike hairs on the undersides. The leaves usually bear signs of insect damage, a feature so common it is considered characteristic of the species. The flowers are arranged in dense, rusty panicles up to 15 centimeters long. The individual flowers are difficult to see in the tight panicle until the stamens develop,〔 being only about a millimeter long. The flowers are hairy and fragrant.〔(''Pycnanthus angolensis'' (Welw.) Warb. ) In: Stannard, B. L. ''Flora Zambesiaca'' Vol. 9, Part 2: Myristicaceae. 1997. Royal Botanic Gardens, Kew.〕 The fruit is a rounded drupe reaching over 3 centimeters long and wide, borne in clusters.〔 It is hairy brown when new, turning yellow-orange, and has cartilaginous flesh that dries woody.〔 It contains a black seed with a red aril〔 which resembles that of nutmeg.〔(''Pycnanthus angolensis''. ) PROTA.〕 The fruit ripens over a long period continuing into the next flowering season, which begins around October.〔
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