TY  - JOUR
A1  - Coleby, David
A1  - Druitt, Rae
T1  - Distribution, ecology, and morphology of the rare mallee Eucalyptus cunninghamii (Myrtaceae), Blue Mountains, New South Wales
T2  - Cunninghamia : a journal of plant ecology for eastern Australia
N2  - The small mallee Eucalyptus cunninghamii Sweet (family Myrtaceae) is restricted to the upper Blue Mountains of New South Wales with an outlier at Wanganderry Walls, 64 km south of Katoomba. It occurs in isolated clusters confined to windswept cliffs facing south and west, with average annual rainfall of at least 1300 mm, slopes of at least 200, and a narrow altitudinal range of 790–940 m. We investigated 38 occurrences, 16 in the Grose Valley north of Katoomba (including the five largest), and 21 in the Jamison Valley, south of Katoomba. We estimated there to be approximately 1560 trees, 75% in the Grose Valley and 25% in the Jamison Valley. Trees in the Grose are significantly shorter (0.8 m high), with more, but thinner trunks than those in the Jamison Valley (2.3 m high). There are about 12 short trees at the Wanganderry outlier. The Extent of Occurrence (EOO) (excluding the Wanganderry outlier) is about 200 km2. The Area of Occupation (AOO) for all 38 occurrences is 9420 m2, or less than one hectare, though despite its limited occurrence Eucalyptus cunninghamii could not be considered Vulnerable against IUCN Criteria at present. Leaf morphology measurements showed that Intramarginal Vein Ratio, Secondary Vein Angle and Oil Gland Density were approximately constant across the upper Blue Mountains. Fire history, bud development and flowering times, and pollination vectors were recorded. Leaf longevity is about 3 years. Flower buds emerge in spring (November) to early summer (December) and develop over a period of 18 months before flowering in late autumn (May). Fruits mature in spring. The time taken to reach flowering from germination and for regrowth after fire is about 5 years, but nearly 7 years to fruit maturity.
Y1  - 2021
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/67841
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-678410
UR  - http://dx.doi.org/10.7751/cunninghamia.2021.001
SN  - 0727- 9620
SN  - 2200 - 405X
VL  - 21
SP  - 1
EP  - 10
ER  -