Velvet Boronia  |  

Boronia hippopala

Status: Vulnerable on the EPBC Act list

Boronia hippopala, Family Rutaceae, also known as Velvet Boronia, is an erect, woody shrub that grows to 2.5 m tall. It is covered in stiff, bristle-like hairs except on the flowers. Branchlets are slightly glandular with small, blunt projections. The leaves are composed of 3 to 7 parts, entire in outline, 6–10 mm long, 6–14 mm wide and slightly covered in glandular bristles. The terminal leaflets are 1–9 mm long and up to 1.75 mm wide. The side leaflets are 2.5–11 mm long and the proximal leaflets are sparsely covered in stiff, bristle-like hairs at the base, or going to hairless. Flowers are located in the leaf axils and cluster in groups of 1–3. The sepals are small, triangular and green. The petals are pink or white and 3.5–8 mm long. Flowering occurs between September and December. Fruit are 2.5 mm long and 1.5 mm wide with stiff, bristle-like hairs.

Government evidence of impact of climate change:

Expand all Close all
  • Australian Government, Conservation Advice, Boronia hippopala

    Threats The main potential threats to Velvet Boronia include the impact of dieback caused by Phytophthora cinnamomi; an inappropriate fire regime; permanent flooding of riparian habitat; and activities that affect its habitat directly; such as roadwork and maintenance; or that indirectly alter the hydrology; for example increased run off and sediment loads from upstream (TSSC; 2005).

  • Australian Government, Listing Advices, Boronia hippopala

    Potential threats to this species are considered to be possible infection from the plant pathogen Phytophthora cinnamomi; an inappropriate fire regime; permanent flooding; and activities that either directly disturb known sites (e.g. road works and maintenance) or alter its hydrology (e.g. upstream or upslope activities in the upper catchments of the St Pauls River and Dukes River that increase runoff or sediment loads).

    Fire also reduces the vegetation cover and allows soil temperature and water availability to rise; facilitating an increase in the pathogen.

    Potential threats to this species are considered to be possible infection from the plant pathogen Phytophthora cinnamomi; an inappropriate fire regime; permanent flooding; and activities that either directly disturb known sites (e.g. road works and maintenance) or alter its hydrology (e.g. upstream or upslope activities in the upper catchments of the St Pauls River and Dukes River that increase runoff or sediment loads).

    Potential threats to the species include infection from the plant pathogen Phytophthora cinnamomi an inappropriate fire regime permanent flooding roadwork and maintenance and alteration of site hydrology (e.g. from upstream or upslope activities that increase runoff and sediment loads).

    Potential threats to the species and its habitat include infection with the plant pathogen Phytophthora cinnamomi; an inappropriate fire regime; permanent flooding; direct disturbance from road works and maintenance; and activities that alter the species site hydrology (e.g. upstream and upslope activities that increase runoff and sediment loads).

    Key threats to the Velvet Boronia include infection from the plant pathogen Phytophthora cinnamomi; an inappropriate fire regime; permanent flooding; disturbance from road works and maintenance and alterations to its site hydrology (e.g. from upstream or upslope activities that increase runoff and sediment loads).