cropping and pasture improvement (NSW Scientific Committee, 2002) and the community had been reduced to less than 1% of its original extent. As a consequence, in 2002 White Box Yellow Box Blakely's Red Gum Woodland was listed as Endangered under the NSW Threatened Species Conservation Act 1995. In 2009 the community was listed as Critically Endangered under the Commonwealth Environment Protection and Biodiversity Conservation Act 1999. Remnant Box-Gum Woodland at Queanbeyan Nature Reserve occupies most of the smaller, northern section but occurs only as small, isolated patches in the larger, southern section. The overstorey includes Yellow Box, Blakely's Red Gum and Apple Box Eucalyptus bridgesiana. The shrubby understorey includes Early Wattle Acacia genistifolia, Hickory Wattle A. implexa, Green Wattle A. mearnsii and Golden Wattle A. pycnantha, and a number of other large shrubs such as Sweet Bursaria Bursaria spinosa subsp. lasiophylla, Burgan Kunzea ericoides and Violet Kunzea Kunzea parvifolia. Smaller shrubs include Native Cranberry Astroloma humifusum, Daphne Heath Brachyloma daphnoides, Peach Heath Lissanthe strigosa and Urn Heath Melichrus urceolatus. The grassy groundcover is fairly open, with many native grasses and forbs. Several species of lilies, daisies and legumes are present along with at least fifteen species of native grasses including Austrodanthonia spp., Austrostipa spp., Red Grass Bothriochloa macra, Tussock Grass Poa sieberiana and Kangaroo Grass Themeda australis. Significant weeds recorded include St John's Wort Hypericum perforatum, Serrated Tussock Nassella trichotoma, African Lovegrass Eragrostis curvula and Phalaris Phalaris aquatica. Flora Button wrinklewort In 1999 it was reported that Queanbeyan Nature Reserve protected some 10,000 specimens of Button wrinklewort. however the present number is likely to be closer to 27,000. Button wrinklewort is a multi-stemmed perennial forb which produces multiple flowering stems high during spring and summer. Each flower-head is on an individual short stalk and consists of numerous very small clustered yellow flowers. Populations of Button wrinklewort occur in south-east NSW and on the plains west of Melbourne. In the Southern Tablelands of NSW, populations of Button wrinklewort occur in Goulburn, the Canberra - Queanbeyan area and at . Evidence suggests that the species was formerly widespread within this range. Button wrinklewort usually inhabits Natural Temperate Grassland, Box-Gum Woodland and the ecotone between these two communities. Since European settlement habitat for the species has been lost, degraded or fragmented as a result of activities such as grazing, cropping, residential and other developments, invasion by weeds and changes to natural fire regimes.