heitlehisus - paljude parasvöötme ja troopiliste puude ja põõsaste omadus vabaneda ebasoodsaks aastaajaks (talveks, põuaajaks) lehtedest, sh. okastest (lehis)
of a tree or shrub: that sheds its leaves every year; opposed to evergreen
Deciduous species (including larch): sampling must be done when the new leaves are fully developed, and before the very beginning of the autumnal yellowing and senescence.
