Ilex Nellie Stevens 1/2 Standard 80cm Stem, Extra 35 Litre Pot: Ilex aquifolium Nellie Stevens, known as Nellie Stevens Holly. Originally from America but now grown all over Europe, Nellie Stevens is a female Holly and is actually a cross breed between Ilex Aquifolium and Ilex Cornuta, leaves are glossy green year round autumn and winter masses of red/orange berries are present, great for birds at that time of year.