Taxon Details: Heimioporus E.Horak
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Family:
Boletaceae (Basidiomycota)
Boletaceae (Basidiomycota)
Scientific Name:
Heimioporus E.Horak
Heimioporus E.Horak
Primary Citation:
Heimioporus E. Horak gen. nov.--replacing Heimiella Boedijn (1951, syn. post., Boletales, Basidiomycota).
Sydowia 56: 237. 2005
Heimioporus E. Horak gen. nov.--replacing Heimiella Boedijn (1951, syn. post., Boletales, Basidiomycota).
Sydowia 56: 237. 2005
Accepted Name:
This name is currently accepted.
This name is currently accepted.
Description:
Diagnosis: Pileus dry, rarely subviscid, subtomentose to subvelutinous, microscopically a palisadic trichodermium or approaching a hymeniform epithelium. Context white to yellow, not staining or erratically cyanescent near tubes. Hymenophore adnexed, yellow, sometimes staining blue. Stipe dry, pruinose to reticulate or rarely with sublacerate ridges, with white basal mycelium. Spore deposit olive brown. Spores alveolate-reticulate to reticulate or with pit-like perforations, extremely rarely rugulose and with crater-like pits, elongate-ellipsoid to short ellipsoid, lacking a suprahilar plage. Hymenial cystidia present. Clamp connections absent.
Registration number: MB #28895
Type species: Boletus retisporus Pat. & C.F. Baker, J. Straits Branch Roy. Asiatic Soc. 78: 72. 1918.
Ectomycorrhiza: Pinaceae, Fagaceae, Dipterocarpaceae, Casuarinaceae, Myrtaceae.
Distribution: NE Asia, Japan, China to Indonesia, Malaysia, Australia, E USA, Mexico, Belize, Costa Rica.
Commentary: Heimioporus was accepted reluctantly by E.J.H. Corner (1972; as Heimiella) (for the 6 species known to him) who noted a distinctive aspect of spore morphology: no clearly demarcated adaxial patch (plage) compared with Strobilomyces. While that comparison seems an odd one, given that the spores share only a reticulate ornamentation, other Boletineae do show an adaxial plage area. In contrast, R. Singer (1986) did not accept the distinction from Boletellus and placed all of those reticulate spored taxa in Boletellus.
Diagnosis: Pileus dry, rarely subviscid, subtomentose to subvelutinous, microscopically a palisadic trichodermium or approaching a hymeniform epithelium. Context white to yellow, not staining or erratically cyanescent near tubes. Hymenophore adnexed, yellow, sometimes staining blue. Stipe dry, pruinose to reticulate or rarely with sublacerate ridges, with white basal mycelium. Spore deposit olive brown. Spores alveolate-reticulate to reticulate or with pit-like perforations, extremely rarely rugulose and with crater-like pits, elongate-ellipsoid to short ellipsoid, lacking a suprahilar plage. Hymenial cystidia present. Clamp connections absent.
Registration number: MB #28895
Type species: Boletus retisporus Pat. & C.F. Baker, J. Straits Branch Roy. Asiatic Soc. 78: 72. 1918.
Ectomycorrhiza: Pinaceae, Fagaceae, Dipterocarpaceae, Casuarinaceae, Myrtaceae.
Distribution: NE Asia, Japan, China to Indonesia, Malaysia, Australia, E USA, Mexico, Belize, Costa Rica.
Commentary: Heimioporus was accepted reluctantly by E.J.H. Corner (1972; as Heimiella) (for the 6 species known to him) who noted a distinctive aspect of spore morphology: no clearly demarcated adaxial patch (plage) compared with Strobilomyces. While that comparison seems an odd one, given that the spores share only a reticulate ornamentation, other Boletineae do show an adaxial plage area. In contrast, R. Singer (1986) did not accept the distinction from Boletellus and placed all of those reticulate spored taxa in Boletellus.