Mexican Purslane
Portulaca mexicana
Portulaca mexicana is a low-growing succulent plant native to numerous states across Mexico. First described …
Coral Purslane (Portulaca coralloides)
Silhouette: T. Michael Keesey
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Portulaca coralloides: coral-like miniature succulent of eastern Kenya
Portulaca coralloides is a diminutive succulent herb from eastern Kenya whose tightly packed, segmented shoots look remarkably like miniature branches of marine coral resting on the arid soil. This striking visual resemblance inspired its specific epithet coralloides, meaning "coral-like."
Placed in the family Portulacaceae, the species was formally described by British botanist Sylvia Mabel Phillips during her revision of East African purslanes at the Royal Botanic Gardens, Kew. It is an accepted Kenyan endemic with no subordinate taxa.
Taxonomy
- ∟ царство Plantae
- ∟ division Tracheophytes (Vascular Plants)
- ∟ subdivision Spermatophytes (Seed plants)
- ∟ Angiosperms
- ∟ mesangiosperms (Core angiosperms)
- ∟ eudicots
- ∟ core eudicots
- ∟ Superasterids
- ∟ order Caryophyllales
- ∟ подотряд / подпорядок Portulacineae
- ∟ family Portulacaceae (Purslane family)
- ∟ genus Portulaca (Purslane genus)
- ∟ species Portulaca coralloides (Coral Purslane)
Morphology
Rather than stretching outward with long leafy runners, this miniature species condenses its stems and leaves into stubby, articulated columns that hug the substrate.
Growth form and reproductive parts
- Coral-like stems: The diminutive stems divide repeatedly into short, cylindrical, brittle-jointed branches that form low cushions on shallow rocky or sandy pockets.
- Imbricate leaves and hairs: Minute, thick, rounded leaves press closely against the stem alongside silvery axillary scales and hairs (protective nodal fibers that conceal the internodes).
- Floral structure: Tiny flowers open briefly at the tips of the coral-like branches and develop into miniature lidded capsules containing finely sculptured seeds.
Interesting facts
The coral-like form of Portulaca coralloides is far more than an aesthetic curiosity; it is a tightly integrated survival system tailored to shallow rock pans and sun-baked soils in eastern Kenya.
Articulated segments and vegetative resilience
- Sphere-like volume-to-surface ratio: By shrinking its leaves into tiny rounded beads and stacking them tightly along stubby branches, the plant maximizes internal water storage while exposing the smallest possible surface area to drying winds.
- Detachment propagation: The brittle joints between its coral-like stem segments allow detached fragments to roll into nearby rock crevices, where they can strike adventitious roots as soon as brief seasonal showers arrive.
Geography of distribution
- Kenya
Sources
- Plants of the World Online (POWO) — Royal Botanic Gardens, Kew: Portulaca coralloides S.M.Phillips.
- World Flora Online (WFO): Portulaca coralloides S.M.Phillips.
- Global Biodiversity Information Facility (GBIF): Portulaca coralloides.
See also
Red-Stemmed Purslane
Portulaca rubricaulis
An annual succulent herb characterized by distinctive reddish stems and solitary yellow flowers, found across …
Extremely Hairy Purslane
Portulaca hirsutissima
A succulent plant endemic to Brazil, characterized by its prominent hairy morphological traits and described …
Giulietti's Purslane
Portulaca giuliettiae
A rare succulent plant species in the purslane family, naturally endemic to the Bahia region …