page_title: Glossary of botanical terms
section_title: W
hierarchical_section_title: Glossary of botanical terms / W
caption_attribution_description: English: Flowers of the Cape Bitter Almond tree. Brabejum stellatifolium. Western Cape. South Africa.
context_page_description: This glossary of botanical terms is a list of definitions of terms and concepts relevant to botany and plants in general. Terms of plant morphology are included here as well as at the more specific Glossary of plant morphology and Glossary of leaf morphology.
context_section_description: warty
  A surface covered with small round protuberances, especially in fruit, leaves, twigs and bark. See tuberculate.
  watershoot
  An erect, strong-growing, or epicormic shoot developing from near the base of a shrub or tree, but distinct from a sucker.
  weed
  1.  Any plant growing where it is not wanted; commonly associated with disrupted habitats. See also ruderal.
  2.  An unwanted plant which grows among agricultural crops.
  3.  A naturalised, exotic, or ecologically "out-of-balance" indigenous species outside of the agricultural or garden context, which, as a result of invasion, adversely affects the survival or regeneration of indigenous species in natural or partly natural vegetation communities.
  wild
  Originating from a known wild or purely natural habitat (wilderness).
  whorl
  A ring of organs borne at the same level on an axis (e.g. leaves, bracts, or floral parts).
  wing
  1.  A membranous expansion of a fruit or seed which aids in dispersal, for instance on pine seeds.
  2.  A thin flange of tissue extending beyond the normal outline of a structure, e.g. on the column of some orchids, on stems, on petioles.
  3.  One of the two lateral petals of a flower of subfamily Faboideae of family Fabaceae, located between the adaxial standard (banner) petal and the two abaxial keel petals.
  woolly
  Very densely covered with long, more or less matted or intertwined hairs, resembling a sheep's wool.
caption: Brabejum stellatifolium is unusual among trees in its native region, in that it bears its leaves in verticillate whorls
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