hypericum pyramidatum(n = noun.plant) great st john's wort, hypericum ascyron - perennial shrub having large star-shaped yellow flowers in narrowly pyramidal cymes;
is a kind of st john's wort

genus hypericum, hypericum, hypericum androsaemum, hypericum ascyron, hypericum calycinum, hypericum crux andrae, hypericum gentianoides, hypericum hypericoides, hypericum maculatum, hypericum perforatum, hypericum prolificum, hypericum spathulatum, hypericum tetrapterum, hypericum virginianum