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Pulveroboletus bembae
''Pulveroboletus bembae'' is a species of fungus in the Boletaceae family that was first described in 2009. It is known only from the rainforest of northern Gabon, a region known for its high level of species diversity. Like all boletes, ''P. bembae'' has fleshy fruit bodies that form spores in tubes perpendicular to the ground on the underside of the cap. These yellowish tubes form a surface of pores, each about 1–2 mm in diameter. The brownish caps may reach up to wide, and rest atop pale brown stems up to long. The stems have a woolly, whitish yellow ring of tissue that is short-lived, and may be absent in older specimens. The spores of ''P. bembae'' are spindle- or fuse-shaped, and have rough surfaces—a detail observable when viewed with scanning electron microscopy. The fungus grows in a mycorrhizal relationship with ''Gilbertiodendron dewevrei'', the dominant tree species of the Guineo-Congolian rainforest. Other similar ''Pulveroboletus'' species in the area include ''P. annulus'' and ''P. croceus'', which may be differentiated from ''P. bembae'' by a combination of macro- and microscopic characteristics.
==Discovery and classification==
The specimens of ''Pulveroboletus bembae'' upon which the species description is based were collected in April, 2008 from three locations in Gabon: in Ogooue-Ivindo Province at the Ipassa-Makokou Research Station; in the Minkébé National Park near Minvoul, and in Bitouga, both locations in the northerly province of Woleu-Ntem.〔 Until the report of this species and the related ''Pulveroboletus luteocarneus'', 12 species of ''Pulveroboletus'' had been reported in tropical Africa.〔〔 According to Degreef & De Kesel, who described the species in a 2009 publication,〔 ''P. bembae'' belongs to the section ''Pulveroboletus'' of the genus ''Pulveroboletus''. This section, defined by Singer in 1947,〔 is characterized by the presence of a pulverulent-arachnoid veil (covered with fine, powdery wax granules and cobwebby) and fruit bodies that are sulphur-yellow, greenish, or yellowish-brown in color.〔
The specific epithet is derived from the word ''bemba'', a name used by the Baka people for the tree ''Gilbertiodendron dewevrei'' that is associated with the fungus.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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