Pronunciation: Barklya (BARK-lee-a sur-in-gee-FOLE-ee a) syringifolia (sur-in-gee-FOLE-ee a)
Barklya syringifolia, commonly known as the crown of gold tree, it is native to subtropical rainforests in eastern Australia.
Distinct vibrant yellow flower display and attractive year-round glossy foliage.
Taxonomy:
- Family: Fabaceae
- Genus: Barklya
Description:
- Growth: Tree typically reach heights of 10 to 15 meters, although in ideal rainforest conditions, they can grow slightly taller. The tree develops a rounded crown with dense foliage.
- Leaves: Dark green, glossy, and oblong to elliptical in shape, reaching up to 15 cm in length, leathery in texture.
- Flowers: Showy, fragrant yellow flowers that bloom in dense, hanging clusters, or racemes, from late spring to early summer.
- Seed: Elongated, flattened seed pods.
Habitat and Distribution:
Naturally occurs along the eastern coast of Australia, particularly in Queensland and northern New South Wales. It thrives in subtropical rainforests and open forest habitats, often near water sources. Well-draining, slightly acidic to neutral soils but can tolerate a range of soil types as long as they retain some moisture.
Hosts: (included but not limited to)
- Rhizobium (spp.): These bacteria form root nodules on the tree, where they convert atmospheric nitrogen (N₂) into a usable form (ammonium), enhancing the nitrogen content in the soil around the tree.
- Native Bees (Trigona spp.): Significant pollinators transferring pollen between flowers, enhancing cross-pollination, which is crucial for genetic diversity in the species.
- Caterpillars (Lepidoptera spp.): Feed on the tree’s leaves and flowers.
Ecology and Uses:
- Ornamental Tree: The tree’s bright yellow flowers, which bloom in dense clusters, make it a visually striking, particularly in spring and early summer. Its showy flowers and attractive foliage make it desirable for parks, gardens, and as a street tree.
- Nitrogen Fixation: As a leguminous species, can enrich soil with nitrogen through its symbiotic relationship with nitrogen-fixing bacteria.
Links:
Barklya syringifolia : Golden Shower Tree | Atlas of Living Australia
