Model shows the transverse and longitudinal section of a dicotyledonous stem in which case the cambium ring has been formed but no secondary growth has taken place.
Model, Wild Mustard Flower (Sinapis arvenis), Enlarged 12x life-size, 3-part, Family: Brassicaceae, The sepals and petals standing in two whorled circles form a cross-shape, leading to the former Cruciferous, Dimensions: 13 x 13 x 14 in, weight: 0.3 kg