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All the Extreme Ultraviolet Explorer (EUVE) observations of AD Leo, totalling1.1 Ms of exposure time, have been employed to analyze the corona of thissingle M dwarf. The light curves show a well defined quiescent stage, and adistribution of amplitude of variability following a power law with a ~-2.4index. The flaring behavior exhibits much similarity with other M active starslike FK Aqr or YY Gem, and flares behave differently from late type activegiants and subgiants. The Emission Measure Distribution (EMD) of the summedspectrum, as well as that of quiescent and flaring stages, were obtained usinga line-based method. The average EMD is dominated by material at log T(K)~6.9,with a second peak around log T(K)~6.3, and a large increase in the amount ofmaterial with log T(K)>~7.1 during flares, material almost absent duringquiescence. The results are interpreted as the combination of three families ofloops with maximum temperatures at log T(K)~6.3, ~6.9 and somewhere beyond logT(K)>~7.1. A value of the abundance of [Ne/Fe]=1.05+-0.08 was measured at logT(K)~5.9. No significative increment of Neon abundance was detected betweenquiescence and flaring states.

The EUVE point of view of AD Leo