fungal order contains genera species contains diverse fruit body including forms genus species ecological role species known certainty thought originated late cretaceous asia north_america major genera mid taxonomy legitimately based molecular analyses nuclear large sequences species research extension graduate work argued need recognize molecular differences fungi recognized genera assigned original description phylogenetic studies investigating studies revealed existence numerous cryptic species contributed taxonomic expansion group core include genera genus resolved sister core group estimated species type family families species species species species species species species species species species species species species based ancestral reconstruction studies earliest basal members originated late cretaceous major genera near mid asia north_america probable ancestral areas primarily probable ancestral hosts description members fruit body shapes ranging cap stipe tubes underside cap fruit bodies hollow surface smooth somewhat covered particles lack net like pattern lines characteristic members pores low uneven ridges fine coarse flesh usually whitish yellowish species exhibit blue reaction injury mass spores yellow spores ellipsoid shape smooth surface fruit body types roughly spherical occasionally usually simple multi layered mature fruit bodies generally open irregularly maturity expose color ranging white yellow black brown black generally absent spores spherical nearly surface texture ranges smooth like hyphae clamp connections morphological diversity distinguishing feature diversity group genera typical cap stipe distinct morphology species morphology outer sections hundreds chambers simple thin outer skin maturity distinct comprises compound fruit bodies spore crowded forms roughly spherical thick multi layered greek pretty mouth distinct members having fruit body forms spore bearing head composed layered thirds species morphology existence cryptic species formally described example studies genera indicate existence numerous cryptic taxa ecology mycorrhizal associations genera established studies demonstrated form associations previously thought determined molecular analyses species genera forestry mycorrhizal help promote growth young group broad distribution genera found continents antarctica cited literature cannon dictionary fungi 10th isbn
Sclerodermatineae