Chonemorpha megacalyx

Names and Synonyms

Scientific Names

Accepted name

Sources: Wikidata, Catalogue of Life

Taxonomical Classification

This plant belongs to the kingdom Plantae within the phylum Streptophyta and is classified under the class Equisetopsida. As a member of the subclass Magnoliidae and the order Gentianales, it is further categorized into the family Apocynaceae. Finally, its specific taxonomic identity is defined by the genus Chonemorpha and the species Chonemorpha megacalyx.

Sources: The World Checklist of Vascular Plants (WCVP)

Distribution

This plant exhibits a specific geographical range primarily centered within East and Southeast Asia. In China, its presence is noted specifically in the South-Central regions. The species also extends into the Indo-China peninsula, where it can be found across several different countries. Specifically, it inhabits parts of Laos and Thailand within this subtropical zone. Additionally, its distribution continues through the landscapes of Vietnam.

Sources: The World Checklist of Vascular Plants (WCVP)

Botanical Identification

Ecology

The ecology of Chonemorpha megacalyx is closely defined by its specific altitudinal distribution within its native habitat. This species thrives within a distinct montane environmental niche, occupying an elevational range that spans from a minimum of 900 m AMSL to a maximum of 1500 m AMSL. Throughout its preferred distribution, the plant maintains a mean elevation of approximately 1200 m AMSL, suggesting an ecological preference for mid-altitude zones where specific temperature and moisture gradients are met. This vertical positioning dictates the environmental stressors and climatic conditions, such as air pressure and humidity levels, that characterize the plant's natural growth patterns.

Elevational range max:

1500 m AMSL

Elevational range mean:

1200 m AMSL

Elevational range min:

900 m AMSL

Morphology

The morphology of Chnemorpha megacalyx is characterized by its significant stature and specialized growth habit, typically reaching a mean height of 17.5 m, with individual specimens ranging from a minimum of 15 m to a maximum of 20 m. It functions as an obligatory climber, utilizing its structure to ascend through its environment, yet it remains an independent organism rather than a parasite. Although it exhibits a woody constitution, its ecological positioning is primarily terrestrial.

Climber :

obligatory

Epiphyte :

terrestrial

Parasite :

independent

Plant height max:

20 m

Plant height mean:

17.5 m

Plant height min:

15 m

Woodiness :

woody

Physiology

The physiology of Chonemorpha megacalyx is characterized by a robust vegetative structure, particularly evident in its significant leaf morphology which serves as a primary site for photosynthetic activity. The foliage displays a substantial range in dimensions, with leaf lengths typically averaging 23 cm, though they can fluctuate between a minimum of 17 cm and a maximum of 29 cm. This longitudinal variation is complemented by a broad leaf width that maintains a mean of 16.5 cm, while individual specimens exhibit widths ranging from a minimum of 11 cm to a maximum of 22 cm. Such expansive surface areas suggest an efficient capacity for light interception and gas exchange, supporting the metabolic requirements of the plant through optimized transpiration and nutrient transport processes within its large-scale laminar tissues.

Leaf length max:

29 cm

Leaf length mean:

23 cm

Leaf length min:

17 cm

Leaf width max:

22 cm

Leaf width mean:

16.5 cm

Leaf width min:

11 cm

Sources: Global Inventory of Floras and Traits (GIFT)

Chemicals

Chonemorpha megacalyx has 4 reported phytochemicals identified across 0 scientific publications and several other databases. The most consistently reported chemicals include Ecdysantheroside A, Ecdysoside A, Ecdysoside B, Ecdysoside F.

Ecdysantheroside A

1. Science advances

Ecdysoside A

1. Science advances

Ecdysoside B

1. Science advances

Ecdysoside F

1. Science advances