adjectivechiefly Mineralogy & Botany
- Asymmetric divisions lead to the formation of a pair of reniform guard cells surrounding the stomatal opening.
- Stalked, reniform sporangia reside clearly in the axis of the leaves.
- Lateral branches dichotomize several times before terminating in pairs of reniform sporangia.
Mid 18th century: from Latin ren 'kidney' + -iform.
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