Anatomy of Mycelial Strands In Plan View (Compound Microscope)

loose- undifferentiated: hyphae loosely woven and of same diameter, with hyphae emanating from surface 

smooth- undifferentiated: compact, with few interhyphal spaces, hyphae of same diameter 

lightly differentiated: compact, central hyphae slightly wider than others and may have trumpet-like swellings at septa 

differentiated- random hyphae: with some very wide hyphae that appear to be randomly distributed and have some enlarged septal pores 

differentiated- central core: wide hyphae form a central core, septa complete

highly differentiated: wide hyphae form a central core, septa often partially to completely dissolved