Premna tomentosa

Names and Synonyms

Scientific Names

Accepted name

Synonyms

• Gumira adenosticta
• Premna tomentosa f. jejuna
• Premna cumingiana f. dentata
• Premna cumingiana
• Gumira pyramidata
• Premna cumingiana f. glabrescens
• Premna cumingiana f. cordata
• Premna flavida
• Gumira cardiophylla
• Premna stellata
• Gumira cumingiana
• Premna pyramidata
• Premna odorata f. crenulata
• Premna involucrata
• Premna involucrata var. thailandica
• Premna hylandiana
• Premna adenosticta
• Premna cardiophylla

Sources: Wikidata, Catalogue of Life

Taxonomical Classification

This plant belongs to the kingdom Plantae and is classified within the phylum Streptophyta and the class Equisetopsida. Under the subclass Magnoliidae, it falls into the order Lamiales and the family Lamiaceae. Finally, its specific taxonomic placement is within the genus Premna.

Sources: The World Checklist of Vascular Plants (WCVP)

Distribution

This plant exhibits a wide geographical distribution across several key regions in Asia. In East Asia, its presence is specifically noted within Southeast China. Moving toward the Indian Subcontinent, it can be found in the states of Assam and throughout the country of India. The species also extends its range into the neighboring nation of Bangladesh. Furthermore, its habitat includes the rugged terrain of the East Himalaya region.

Sources: The World Checklist of Vascular Plants (WCVP)

Botanical Identification

Life history

The life history of Premna tomentoosa is characterized by its status as a perennial plant, ensuring its presence in its natural habitat through multiple growing seasons. In terms of its structural growth patterns and survival strategies, it exhibits characteristics of both phanerophyte and nanophanerophyte life forms, indicating a capacity for woody growth where the stem branches are held above the ground. This species follows a deciduous phenology, meaning it undergoes a seasonal shedding of its foliage.

Deciduousness :

deciduous

Life form :

nanophanerophyte

Life form :

phanerophyte

Lifecycle :

perennial

Morphology

The morphology of Premna tomentoza is characterized by a woody growth form, primarily manifesting as a tree. This plant exhibits a significant stature, with an average height of approximately 12 m and reaching a maximum height of up to 18 m. It is a terrestrial species that grows independently, without parasitic tendencies. Although it can exhibit climbing tendencies, it is categorized as a self-supporting liana or vine rather than an obligatory climber.

Climber :

self-supporting

Epiphyte :

terrestrial

Growth form :

tree

Parasite :

independent

Plant height max:

18 m

Plant height mean:

12 m

Woodiness :

woody

Physiology

The physiology of Premna tomentoosa is characterized by a standard C3 photosynthetic pathway, which involves the direct fixation of atmospheric carbon dioxide through the Calvin cycle without the specialized CO2-concentrating mechanisms found in C4 or CAM plants. This metabolic strategy dictates its carbon assimilation efficiency and water-use patterns in its natural habitat. Furthermore, the plant does not function as a nitrogen fixer, meaning it lacks a symbiotic relationship with nitrogen-fixing bacteria to convert atmospheric nitrogen into bioavailable forms, and instead relies on the uptake of nitrogenous compounds directly from the soil through its root system.

Nitrogen fixer :

no

Photosynthetic pathway :

C3

Sources: Global Inventory of Floras and Traits (GIFT)

Plant Parts

Premna tomentosa has 2 reported plant parts identified across 4 scientific publications and several other databases that are studied for medicinal purposes. The most consistently reported plant part include leaf, stem.

Leaf

1. Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie
2. Molecular and cellular biochemistry
3. Phytochemistry

Stem

1. Phytomedicine : international journal of phytotherapy and phytopharmacology

Chemicals

Premna tomentosa has 4 reported phytochemicals identified across 4 scientific publications and several other databases. The most consistently reported chemicals include Clerodane Diterpenoids, Flavonoids, Premnone A, triterpenoids.

Clerodane Diterpenoids

1. Phytochemistry

Flavonoids

1. Phytochemistry

Premnone A

1. Phytochemistry

triterpenoids

1. Phytochemistry

Conditions

Premna tomentosa has 1 reported investigations on conditions identified across 4 scientific publications and several other databases. The most consistently reported conditions include pain.

Pain

1. Pharmacology, biochemistry, and behavior

Preparations

Premna tomentosa has 3 reported preparations identified across 4 scientific publications and several other databases. The most consistently reported preparations include Premna tomentosa extract, extract, hexane extract of stem bark.

Premna tomentosa extract

1. Molecular and cellular biochemistry

Extract

1. Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie

Hexane extract of stem bark

1. Phytomedicine : international journal of phytotherapy and phytopharmacology