orange stonecrop

Names and Synonyms

Common Names

• Kamchatka Stonecrop

Scientific Names

Accepted name

Synonyms

• Aizopsis takesimensis
• Phedimus kurilensis
• Sedum eooacombianum
• Sedum takesimense
• Sedum floriferum
• Sedum kurilense
• Phedimus floriferus
• Sedum aizoon subsp. kamtschaticum
• Aizopsis florifera
• Aizopsis kamtschatica
• Aizopsis kurilensis
• Sedum kamtschaticum f. angustifolium
• Sedum kamtschaticum
• Phedimus takesimensis
• Sedum sikokianum subsp. kurilense

Regional and Traditional Names

Sources: Wikidata, Catalogue of Life

Taxonomical Classification

This plant belongs to the kingdom Plantae and the phylum Streptophyta, situated within the class Equisetopsida and subclass Magnoliidae. It is further classified under the order Saxifrages and the family Crassulaceae. Finally, its specific taxonomic designation is placed within the genus Phedimus.

Sources: The World Checklist of Vascular Plants (WCVP)

Distribution

This plant exhibits a widespread presence across several distinct regions of the European continent. In Northern Europe, its range extends through the landscapes of Norway, Great Britain, and Ireland. Moving toward the central part of the continent, the species is also well-established in Middle Europe. Specifically, it can be found growing within the borders of both Austria and Germany. Together, these locations illustrate the diverse geographical distribution of Phedimus kamtschaticus.

Sources: The World Checklist of Vascular Plants (WCVP)

Botanical Identification

Ecology

The ecology of Phedimus kamtschaticus is defined by its specialized adaptation to rugged, high-elevation environments, specifically thriving within mountains and stony places. As a resilient succulent, it occupies niches characterized by thin, well-drained soils and rocky substrates where competition from larger, more aggressive vegetation is minimal. Its ability to colonize these stony terrains allows it to endure the physiological stresses associated with montane microclimates, including rapid drainage and exposure to fluctuating temperatures. By establishing itself in these mineral-rich, rocky habitats, the plant utilizes its specialized water-storage capabilities to maintain stability in environments that may experience periods of moisture scarcity typical of high-altitude landscapes.

Habitat :

mountains, stony places

Life history

The life history of Phedimus kamtschaticus is characterized by its status as a perennial plant, allowing it to persist through multiple growing seasons and establish stable colonies within its habitat. As a long-lived herbaceous perennial, it follows a recurring seasonal cycle where it emerges from its root system to produce foliage and flowering structures during the warmer months. This perennial nature enables the plant to store energy in its rhizomes or root systems, providing the necessary reserves to survive periods of dormancy during unfavorable environmental conditions. Over time, the plant can spread through vegetative reproduction, contributing to its long-term survival and presence in its ecological niche.

Lifecycle :

perennial

Morphology

The morphology of Phedimus kamtschaticus is characterized by its growth form as a non-woody herb, specifically classified as a forb. The plant is primarily terrestrial in its habitat, though it can exist within a spectrum ranging from semiaquatic to aquatic environments. It functions as an independent organism, lacking any parasitic or epiphytic tendencies, and maintains a self-supporting structure rather than acting as a liana, vine, or climber. In terms of stature, it is a low-growing species with a plant height that typically ranges from a minimum of 0.3 m to a maximum of 0.4 m.

Aquatic :

terrestrial

Climber :

self-supporting

Epiphyte :

terrestrial

Growth form :

herb

Growth form :

forb

Parasite :

independent

Plant height max:

0.4 m

Plant height min:

0.3 m

Woodiness :

non-woody

Physiology

The physiology of Phedimus kamtschaticus is characterized by its metabolic efficiency and adaptation to temperate environments, most notably through its utilization of the C3 photosynthetic pathway. This C3 pathway involves the direct fixation of atmospheric carbon dioxide by the enzyme RuBisCO during the Calvin cycle, which is highly effective in the cool to moderate climates where this succulent typically thrives. As a member of the Crassulaceae family, the plant exhibits specialized physiological adaptations for water conservation, including the use of Crassulacean Acid Metabolism (CAM) characteristics under specific environmental stressors to minimize transpiration. Its physiological processes are further supported by succulent leaf morphology, which allows for significant water storage to maintain turgor pressure and metabolic continuity during periods of drought. The integration of its C3 photosynthetic pathway with these water-storing capabilities enables the plant to maintain robust growth and reproductive success across diverse soil types and moisture availability.

Photosynthetic pathway :

C3

Reproduction

The reproduction of Phedimus kamtschaticus is characterized by a distinct seasonal flowering period that facilitates its reproductive cycle. The flowering process begins in June and continues steadily through the summer months, eventually reaching its conclusion in September. This temporal window ensures that the plant's reproductive structures are active during the peak of the growing season, allowing for successful pollination and subsequent seed development within this specific timeframe.

Flowering time :

Jun

Flowering time :

Sep

Sources: Global Inventory of Floras and Traits (GIFT)

Chemicals

Phedimus kamtschaticus has 2 reported phytochemicals identified across 0 scientific publications and several other databases. The most consistently reported chemicals include 2,6-di-O-galloylarbutin, Gossypetin 8-O-beta-D-xylopyranoside.

2,6-di-O-galloylarbutin

1. Phytochemistry

Gossypetin 8-O-beta-D-xylopyranoside

1. Phytochemistry