Teeth-margin crepidiastrum

Names and Synonyms

Common Names

• Teeth-margin crepidiastrum

Scientific Names

Accepted name

Synonyms

• Youngia denticulata
• Ixeris denticulata
• Prenanthes denticulata
• Chondrilla denticulata
• Lactuca denticulata
• Paraixeris denticulata

Sources: Wikidata, Catalogue of Life

Taxonomical Classification

This plant belongs to the kingdom Plantae and is classified under the phylum Streptophyta and the class Equisetopsida. Within the subclass Magnoliidae, it is organized under the order Asterales and the family Asteraceae. Finally, it is identified by its specific genus, Crepidiastrum.

Sources: The World Checklist of Vascular Plants (WCVP)

Distribution

This plant exhibits a diverse geographical distribution across several key regions in East Asia. In the Russian Far East, it can be found growing within the Amur, Khabarovsk, and Primorye territories. Its range extends significantly into China, where it is established in the South-Central regions. Additionally, the species is recorded as being present in Inner Mongolia. These various locations highlight the broad environmental adaptability of Crepidastrum denticulatum.

Sources: The World Checklist of Vascular Plants (WCVP)

Botanical Identification

Ecology

The ecology of Crepidiasternum denticulatum is characterized by its adaptability to a diverse array of environmental settings, including forests, meadows, mountains, riverbanks, sandy areas, and stony places. This species occupies a specific altitudinal niche, maintaining a consistent elevation profile with a recorded minimum, mean, and maximum elevation of 100 m AMSL. Its ability to thrive across such varied substrates—from the moisture-rich environments of rivers to the more arid or rugged conditions of sand and stony terrain—demonstrates a resilient ecological strategy within its habitat.

Elevational range max:

100 m AMSL

Habitat :

forest, meadows, mountains, rivers, sand, stony places

Life history

The life history of Crepidiasctrum denticulatum is characterized by a variable lifecycle, meaning it can manifest as an annual, biennial, or perennial depending on the environmental conditions and local ecological stressors. This adaptability allows the species to persist in diverse habitats by adjusting its reproductive and survival strategies; in stable environments with consistent resources, it often functions as a perennial, establishing long-term presence through sustained growth, whereas in more ephemeral or disturbed settings, it may complete its life cycle more rapidly as an annual or biennial. This physiological flexibility ensures that the plant can maximize seed production during favorable periods while maintaining a persistent vegetative or seed bank presence to survive unfavorable seasonal shifts.

Lifecycle :

annual

Morphology

The morphology of Crepidiascrum denticulatum is characterized by a herbaceous growth form, manifesting as a non-woody plant. It functions as a self-supporting climber, lacking the need for external structures to maintain its posture. In terms of stature, the plant exhibits significant variation in height, with individuals measuring as short as 0.15 m, reaching an average height of 0.75 m, and extending to a maximum height of 1.2 m.

Climber :

self-supporting

Growth form :

herb

Plant height max:

1.2 m

Plant height mean:

0.75 m

Plant height min:

0.15 m

Woodiness :

non-woody

Physiology

The physiology of Crepidiasctrum denticulatum is characterized by a C3 photosynthetic pathway, which dictates its carbon fixation processes and metabolic efficiency. The plant's foliar morphology is defined by leaves that exhibit a toothed margin and lack both thorns and spines. These leaves vary in size, with a minimum length of 3 cm, a mean length of 7.5 cm, and a maximum length reaching 14 cm. The width of the foliage is similarly variable, ranging from a minimum of 1 cm to a maximum of 6.5 cm, with a mean width of 3.375 cm. Furthermore, the plant exhibits a consistent Specific Leaf Area (SLA) of 331.2522086 cm²/g, indicating a uniform ratio between its leaf surface area and its dry mass, which influences its light-interception capabilities and resource allocation strategies.

Leaf length max:

14 cm

Leaf length mean:

7.5 cm

Leaf length min:

3 cm

Leaf margin :

toothed

Leaf spines :

no

Leaf thorns :

no

Leaf width max:

6.5 cm

Leaf width mean:

3.375 cm

Leaf width min:

1 cm

Photosynthetic pathway :

C3

Specific Leaf Area (SLA) min:

331.2522086 cm²/g

Reproduction

The reproduction of Crepidiasternum denticulatum is characterized by a specific flowering phenology and the production of small, delicate fruits. The flowering period typically commences in August and concludes in October, though the timing can be variable across different cycles. Following successful pollination, the plant produces fruits that exhibit a consistent width, with a mean and minimum measurement of 0.08 cm and a maximum reaching 0.08 cm. The length of these fruits varies more significantly, ranging from a minimum of 0.21 cm to a maximum of 0.28 cm, with an overall average length of 0.245 cm. The resulting seeds are quite minute, possessing a mean mass of approximately 0.1024 g, facilitating the plant's dispersal and subsequent propagation.

Flowering time :

Aug

Flowering time :

Oct

Fruit length max:

0.28 cm

Fruit length mean:

0.245 cm

Fruit length min:

0.21 cm

Fruit width max:

0.08 cm

Seed mass mean:

0.1024 g

Sources: Global Inventory of Floras and Traits (GIFT)

Chemicals

Crepidiastrum denticulatum has 2 reported phytochemicals identified across 0 scientific publications and several other databases. The most consistently reported chemicals include H2O2, Sesquiterpenes.

H2O2

1. International journal of molecular sciences

Sesquiterpenes

1. International journal of molecular sciences