Veronicastrum plant showing bloom and whorled leaves

Botanical Nerd Word: Whorl

Whorl: A ring-like arrangement of similar parts arising from a common point or node; a verticil.* The leaves of this Veronicastrum virginicum (Culver’s root) are arranged in whorls at each node on the …

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two pellets of caterpillar frass

Botanical Nerd Word: Frass

Frass: The excrement of larvæ; also, the refuse left behind by boring insects.* This year’s huge populations of caterpillars are producing large amounts of caterpillar frass. While the caterpillars may be …

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Botanical Nerd Word: Actinomorphic

Actinomorphic: Having multiple planes of symmetry such that any line drawn through the middle produces two mirror-image halves, usually applied to flowers.* Compare with zygomorphic. This striking red Dahlia ‘Mystic Enchantment’ …

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Tulip tree flower

Botanical Nerd Word: Perfect

Perfect: Flowers that have functioning female and male reproductive parts.* The flowers of this Liriodendron tulipifera (tulip tree) have both male (pollen producing) stamens as well as female (pollen receiving) …

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