Powdery mildew

B Blackstreak Unknown cause B Blasiphalia Blasiphalia L Lesser wax moth Blasiphalia pseudogrisella B Blastocladia Blastocladia B Blastocladia pringsheimii Blastocladia pringsheimii B Blastocladiaceae Blastocladiaceae B Blastocladiales Blastocladiales B Blastocladiella Blastocladiella B Blastocladiella simplex Blastocladiella simplex B Blastocladiomycota fungi Blastocladiomycota B Bleaching necrosis Air pollutant B Blister disease of pear Coniothecium chromatosporum B Banana blood disease Pseudomas B Boron deficiency Boron deficiency P Powdery mildew of cereals Blumeria P Powdery mildew of cereals Blumeria graminis C Cherry leaf spot Blumeriella B Blumeriella ceanothi Blumeriella ceanothi B Blumeriella kerriae Blumeriella kerriae B Blunt ear syndrome Temperature stress B Boeremia Boeremia P Phoma leaf spot Boeremia coffeae P Phoma leaf spot of chrysanthemum Boeremia crinicola P Phoma rot of solanaceous crops Boeremia gilvescens P Phoma leaf spot of ivy Boeremia hedericola P Phoma leaf and stem spot of sunflower Boeremia heteromorpha P Phoma leaf spot (Boeremia inoxydabilis) Boeremia inoxydabilis L Lilac phoma leaf spot Boeremia lilacis P Pasmo disease of flax Boeremia linicola T Tomato stem rot Boeremia lycopersici P Phoma blight of chickpea Boeremia noackiana P Poplar boeremia Boeremia populi P Pseudolilac phoma leaf spot Boeremia pseudolilacis P Phoma leaf spot of elderberry Boeremia sambuci-nigrae P Phoma leaf spot of mint Boeremia strasseri S Sedum leaf spot Boeremia telephii B Bois noir Bois noir B Bolbitiaceae Bolbitiaceae B Bolbitius Bolbitius B Bolbitius coprophilus Bolbitius coprophilus M Milky bolbitius Bolbitius lacteus B Bolbitius reticulatus Bolbitius reticulatus Y Yellow fieldcap Bolbitius titubans B Boletaceae Boletaceae B Boletales Boletales B Boletellus Boletellus B Boletellus obscurococcineus Boletellus obscurococcineus B Boletellus russellii Boletellus russellii B Boletinellaceae Boletinellaceae B Boletinellus Boletinellus B Boletinellus merulioides Boletinellus merulioides B Boletopsis Boletopsis G Grey boletopsis Boletopsis grisea B Black-and-white Boletopsis Boletopsis leucomelaena B Boletopsis perplexa Boletopsis perplexa B Boletus Boletus B Bronze bolete Boletus aereus B Butter bolete Boletus appendiculatus B Birch bolete Boletus betulicola B Bitter beech bolete Boletus calopus