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Restio
Restio tetraphyllus
γ¬γΉγγͺ
A monocot distributed mainly in South Africa (fynbos) and Australia. The leaves are reduced and green stems perform photosynthesis. In Japan, it is available to a limited extent as a garden plant but does not grow wild.
Identification Points
- βLeaves are reduced to scales; slender, rod-like to needle-like stems photosynthesize
- βStems are slender, rigid, jointed, and green
- βAppearance resembles Equisetum or some grasses
Habitat
Arid regions of South Africa and Australia (cultivated only in Japan)
Season
Year-round (evergreen)
Morphological TraitsAI-estimated, needs verification
Growth form
Herb
Leaf shape
Needle
Habitat
Cultivated
Leaf arrangement
Alternate
Leaf type
Simple
Venation
Parallel
Petal count
3 petals
Leaf dissection
Undivided
Flower symmetry
Actinomorphic
Ovary position
Superior
Phylogenetic Positionγ΅γ³γ’γ½γ¦η§ β
Phylogenetic Position
Angiosperms > Monocots > Poales > Restionaceae
Divergence Era
Late Cretaceous to Paleogene
Evolution Notes
Restionaceae belongs to Poales and diversified in nutrient-poor, arid environments of the Southern Hemisphere (such as fynbos). The functional replacement of leaves by photosynthetic stems is an adaptive evolution to drought and nutrient-poor conditions.
View on evolution timeline βSources & References
AI-generated, needs verification