ironbark
Eucalyptus crebra · Accepted scientific name
Scientific literature: Very Sparse (3 studies) · ★☆☆☆☆
Ironbark, scientifically known as Eucalyptus crebra, is a resilient Australian tree distinguished by its rugged, deeply fissured bark. Renowned for its medicinal properties, its essential oils offer potent antimicrobial and decongestant benefits. This hardy species plays a vital role in traditional healing and supporting respiratory health through aromatherapy.
- Family
- Myrtaceae
- Native range
- Africa
- Parts used
- Leaf
- Common names
- Ironbark · Ironbark-Tree · 12 more
- Scientific synonyms
- Eucalyptus Racemosa Var. Longiflora
Names and Synonyms
Common Names
- ironbark
- ironbark-tree
- narrow-leaf-red-ironbark
- narrow-leaved-ironbark
- narrow-leaved-red-ironbark
- Narrow-leaved Ironbark
- grey ironbark
- narrow-leaf ironbark
- narrow-leaf red ironbark
- red ironbark
- white ironbark
- Narrow Leaved Ironbark
- Narrow-leaved Red Ironbark
- narrowleaf red ironbark
Scientific Names
Accepted name
Eucalyptus crebraSynonyms
- Eucalyptus racemosa var. longiflora
Sources: Wikidata, Catalogue of Life
Taxonomical Classification
This plant belongs to the kingdom Plantae and the phylum Streptophyta, falling under the class Equisetopsida and subclass Magnoliidae. Within the order Myrtales and the family Myrtaceae, it is classified under the genus Eucalyptus.
| Rank | Classification |
|---|---|
| Kingdom | Plantae |
| Phylum | Streptophyta |
| Class | Equisetopsida |
| Subclass | Magnoliidae |
| Order | Myrtales |
| Family | Myrtaceae |
| Genus | Eucalyptus |
Sources: The World Checklist of Vascular Plants (WCVP)
Distribution
This plant exhibits a widespread geographical presence across several distinct regions of the world. Within East Tropical Africa, it can be found growing in Kenya, Tanzania, and Uganda. Its distribution also extends into the Indian Subcontinent, specifically within India. Furthermore, the species is located in the southeastern parts of China. Together, these locations highlight the diverse habitats where this medicinal species thrives.
| Region | Area |
|---|---|
| East Tropical Africa | Kenya |
| East Tropical Africa | Tanzania |
| East Tropical Africa | Uganda |
| China | China Southeast |
| Indian Subcontinent | India |
| Indian Subcontinent | Pakistan |
| Australia | New South Wales |
| Australia | Queensland |
| South-Central Pacific | Society Is. |
| North-Central Pacific | Hawaii |
Sources: The World Checklist of Vascular Plants (WCVP)
Botanical Identification
Ecology
The ecology of Eucalyptus crebra is characterized by its specific altitudinal niche, as the species is consistently documented at an elevation of 450 m AMSL. This precise elevational range, with a minimum, mean, and maximum value all converging at 450 m AMSL, indicates a highly specialized habitat preference within its distribution. Such stability in elevation suggests that the plant is adapted to the specific climatic conditions, soil types, and moisture regimes found at this particular altitude, which likely play a critical role in its survival and growth patterns within its ecosystem.
- Elevational range max:
- 450 m AMSL
Life history
The life history of Eucalyptus crebra is characterized by a perennial lifecycle, allowing it to establish a long-term presence within its ecosystem. As a phanerophyte, it maintains its photosynthetic organs on woody stems elevated above the ground, functioning specifically as a phanerophyte to thrive in its native habitats. This species exhibits an evergreen deciduousness, ensuring that it retains its foliage throughout the year to maximize photosynthetic activity.
- Deciduousness :
- evergreen
- Life form :
- phanerophyte
- Lifecycle :
- perennial
Morphology
The morphology of Eucalyptus crebra is characterized by its robust growth form as a woody tree. It is a self-supporting, terrestrial species that functions as an independent organism, lacking any parasitic or epiphytic tendencies. In terms of stature, the plant exhibits significant vertical development, with a minimum height of 20 m, a mean height of approximately 27.5 m, and a maximum potential height reaching up to 35 m.
- Aquatic :
- terrestrial
- Climber :
- self-supporting
- Epiphyte :
- terrestrial
- Growth form :
- tree
- Parasite :
- independent
- Plant height max:
- 35 m
- Plant height mean:
- 27.5 m
- Plant height min:
- 20 m
- Woodiness :
- woody
Physiology
The physiology of Eucalyptus crebra is characterized by a C3 photosynthetic pathway, which governs its carbon fixation processes and energy production. The plant's leaf morphology plays a critical role in its physiological efficiency, featuring leaves that vary in size with a mean length of 11.5 cm, ranging from a minimum of 6.5 cm to a maximum of 15 cm. Correspondingly, the leaf width fluctuates between a minimum of 1 cm and a maximum of 1.8 cm, maintaining an average width of 1.4 cm. Furthermore, this species does not function as a nitrogen fixer, meaning it relies on external soil nitrogen availability rather than symbiotic nitrogen-fixing bacteria to meet its nutritional requirements.
- Leaf length max:
- 15 cm
- Leaf length mean:
- 11.5 cm
- Leaf length min:
- 6.5 cm
- Leaf width max:
- 1.8 cm
- Leaf width mean:
- 1.4 cm
- Leaf width min:
- 1 cm
- Nitrogen fixer :
- no
- Photosynthetic pathway :
- C3
Reproduction
The reproduction of Eucalyptus crebra is characterized by specific morphological dimensions regarding its inflorescence, fruit, and seeds. The inflorescence is relatively small, with lengths ranging from a minimum of 0.007 m to a maximum of 0.01 m. The resulting fruit exhibits notable variability in size; the fruit length typically averages 0.5 cm, ranging from a minimum of 0.4 cm to a maximum of 0.7 cm, while the fruit width maintains an average of 0.3 cm, with values spanning from a minimum of 0.3 cm to a maximum of 0.6 cm. The seeds produced are minute, with a mean seed mass of 0.000944 g, and they exhibit a size range from a minimum mass of 0.00023 g to a maximum mass of 0.0019 g.
- Fruit length max:
- 0.7 cm
- Fruit length mean:
- 0.5 cm
- Fruit length min:
- 0.4 cm
- Fruit width max:
- 0.6 cm
- Fruit width mean:
- 0.3 cm
- Inflorescence length max:
- 0.01 m
- Inflorescence length min:
- 0.007 m
- Seed mass max:
- 0.0019 g
- Seed mass mean:
- 0.000944 g
- Seed mass min:
- 0.00023 g
Sources: Global Inventory of Floras and Traits (GIFT)
Plant Parts
Eucalyptus crebra has 1 reported plant parts identified across 1 scientific publications and several other databases that are studied for medicinal purposes. The most consistently reported plant part include leaf.
| Plant part | Supporting sources | Consensus |
|---|---|---|
| Leaf | 1 supporting sources | ★☆☆☆☆ |
Leaf
- Molecules (Basel, Switzerland)
Chemicals
Eucalyptus crebra has 2 reported phytochemicals identified across 1 scientific publications and several other databases. The most consistently reported chemicals include 1,8-Cineole, eugenol.
| Chemical | Supporting sources | Consensus |
|---|---|---|
| 1,8-Cineole | 1 supporting sources | ★☆☆☆☆ |
| eugenol | 1 supporting sources | ★☆☆☆☆ |
1,8-Cineole
- Molecules (Basel, Switzerland)
eugenol
- Molecules (Basel, Switzerland)
Preparations
Eucalyptus crebra has 1 reported preparations identified across 1 scientific publications and several other databases. The most consistently reported preparations include essential oils.
| Preparation | Supporting sources | Consensus |
|---|---|---|
| Essential oils | 1 supporting sources | ★☆☆☆☆ |
Essential oils
- Molecules (Basel, Switzerland)