Eucalyptus corticosa (a tree) - vulnerable species listing
The Scientific Committee, established by the Threatened Species Conservation Act, has made a Final Determination to list the tree, Eucalyptus corticosa L.A.S. Johnson, as a VULNERABLE SPECIES on Schedule 2 of the Act. The listing of Vulnerable Species is provided for by Part 2 of the Act.
NSW Scientific Committee - final determination
The Scientific Committee has found that:
1. Eucalyptus corticosa is described as follows: HABIT: Tree to 20 m high; bark persistent on trunk and larger branches, grey-brown to red-brown, thick, fibrous-flaky to shortly fibrous, smooth above, grey to grey-brown, shedding in short ribbons. LEAVES: Juvenile leaves disjunct, linear to narrow-lanceolate, dull grey-green. Adult leaves disjunct, narrow-lanceolate to lanceolate, 6-12 cm long, 1-2 cm wide, grey-green, dull, concolorous. FLOWERS: Umbellasters 7-flowered; peduncle terete or 4-angled, 4-6 mm long; pedicels terete, 1-3 mm long. Buds ovoid or shortly fusiform, 4-6 mm long, 3-4 mm diam., scar present; calyptra conical, shorter than to as long as and as wide as hypanthium. FRUIT: Fruit hemispherical to campanulate, 4-6 mm long, 4-6 mm diam.; disc raised; valves exserted. (page 108 in G. J. Harden, Flora of New South Wales Volume 2, UNSW Press 1991).
2. Eucalyptus corticosa is only known from a restricted area, over about 20 square kilometres, near Mount Coricudgy in the Rylstone area.
3. Eucalyptus corticosa occurs on a restricted area of sandy soils, on low slope erosional terraces associated with the upper reaches of the Cudgegong River. It may be locally frequent, and is often associated with Eucalyptus rossii in this habitat.
4. It has been recorded from Coricudgy State Forest, but has not been recorded from nearby areas of Wollemi National Park.
5. Threats to this species include fragmentation of the population by clearing for farming expansion, road widening and grazing, and altered fire regimes.
6. In view of its restricted distribution, its absence from conservation reserves, and the threat of ongoing reduction of the population, the Scientific Committee is of the opinion that Eucalyptus corticosa is likely to become endangered unless the circumstances and factors threatening its survival or evolutionary development cease to operate and therefore is eligible to be listed as a Vulnerable Species.
Proposed Gazettal date: 30/11/01
Exhibition period: 30/11/01 - 18/01/02