amalthea

noun

noun

Biology, Botany, Natural sciences Obsolete An aggregation of dry fruits within a calyx which does not become fleshy, as in Alchemilla or Sanguisorba.

The amalthea cut transversely; calyx five-toothed, echinated; seeds three, ovate, not fleshy, slightly compressed, pointed at top, blunt at bottom.1821, Samuel Frederick Gray, A natural arrangement of British plants, page 264:

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.