Isaacs Ridge and Nearby

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This location has been created to help bring some clarity to the Isaacs Ridge area, where Google Maps is vague on the boundary between Isaacs and Jerrabomberra. It covers Isaacs Ridge Nature Reserve, the Offset Area, Isaacs Pines and the open space nearby.

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Featured sightings

Hypericum perforatum (St John's Wort) at Isaacs Ridge and Nearby - 14 Nov 2023 by Mike

Hypoxis hygrometrica var. villosisepala (Golden Weather-grass) at Isaacs, ACT - 16 Nov 2022 by Mike

Thelymitra sp. (pauciflora complex) (Sun Orchid) at Jerrabomberra, ACT - 19 Oct 2022 by Mike

Acrida conica (Giant green slantface) at Isaacs, ACT - 12 Mar 2021 by MPennay

Glycine clandestina (Twining Glycine) at Isaacs, ACT - 30 Jun 2020 by Mike

Asplenium flabellifolium (Necklace Fern) at Isaacs, ACT - 7 Apr 2020 by Mike

Tachyglossus aculeatus (Short-beaked Echidna) at Isaacs Ridge - 17 Sep 2018 by roymcd

Latest sightings

Acacia terminalis (Sunshine Wattle) at Fadden, ACT - 17 Jun 2025 by Mike

Corcorax melanorhamphos (White-winged Chough) at Isaacs, ACT - 17 Jun 2025 by Mike

Galium murale (Small Bedstraw) at Isaacs, ACT - 17 Jun 2025 by Mike

Clematis leptophylla (Small-leaf Clematis, Old Man's Beard) at Isaacs, ACT - 17 Jun 2025 by Mike

Cytisus scoparius subsp. scoparius (Scotch Broom, Broom, English Broom) at Isaacs, ACT - 14 Jun 2025 by Mike

Unverified Lichen at Isaacs, ACT - 14 Jun 2025 by Mike

Wallabia bicolor (Swamp Wallaby) at Isaacs, ACT - 14 Jun 2025 by Mike

Lactarius deliciosus (Saffron Milkcap) at Isaacs, ACT - 1 Jun 2025 by DavidDedenczuk

Tradescantia fluminensis (Trad, Wandering Jew) at Isaacs, ACT - 3 Jun 2025 by Mike

Crataegus azarolus (Mediterranean Medlar) at Fadden, ACT - 3 Jun 2025 by Mike

Platycercus elegans (Crimson Rosella) at Isaacs, ACT - 3 Jun 2025 by Mike

Corcorax melanorhamphos (White-winged Chough) at O'Malley, ACT - 1 Jun 2025 by Mike

Trichilogaster sp. (genus) (Acacia gall wasp) at Isaacs, ACT - 30 May 2025 by Mike

Berberis aquifolium (Oregon Grape) at Isaacs, ACT - 30 May 2025 by Mike

Brachychiton populneus subsp. populneus (Kurrajong) at Isaacs, ACT - 30 May 2025 by Mike

Pinus radiata at Isaacs, ACT - 29 May 2025 by Mike

Zanda funerea (Yellow-tailed Black-Cockatoo) at Isaacs, ACT - 29 May 2025 by Mike

Acacia ulicifolia (Prickly Moses) at Isaacs, ACT - 29 May 2025 by Mike

Olearia lirata (Snowy Daisybush) at Isaacs, ACT - 29 May 2025 by Mike

Cheilanthes sieberi subsp. sieberi (Mulga Rock Fern) at Isaacs, ACT - 29 May 2025 by Mike

Melichrus urceolatus (Urn Heath) at Isaacs, ACT - 29 May 2025 by Mike

Correa reflexa var. reflexa (Common Correa, Native Fuchsia) at Isaacs, ACT - 28 May 2025 by Mike

Solanum cinereum (Narrawa Burr) at Isaacs, ACT - 28 May 2025 by Mike

Sturnus vulgaris (Common Starling) at Isaacs, ACT - 28 May 2025 by Mike

Phaps chalcoptera (Common Bronzewing) at Isaacs, ACT - 28 May 2025 by Mike

Pellaea calidirupium (Hot Rock Fern) at Isaacs, ACT - 28 May 2025 by Mike

Asplenium flabellifolium (Necklace Fern) at Isaacs, ACT - 28 May 2025 by Mike

Acacia subulata (Awl-leaved Wattle) at Isaacs, ACT - 28 May 2025 by Mike

Vombatus ursinus (Common wombat, Bare-nosed Wombat) at Fadden, ACT - 21 May 2025 by Mike

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Discussion

MichaelMulvaney wrote:

14 Jun 2025

Love your work Mike

Cytisus scoparius subsp. scoparius

Mike wrote:

5 Jun 2025

Discoloration is gum exudate dripping down and onto the ground.

Pinus radiata

MichaelMulvaney wrote:

5 Jun 2025

Thanks Ken - much appreciated

Pinus radiata

KenT wrote:

5 Jun 2025

I don't know what this is, Diplodia sapinea is not a rust it is in the family Botryosphaeriaceae (Ascomycota). Diplodia sapinea produces blue staining of the timber (under the bark), the image here appears to show superficial colouration on the bark surface that may or not be associated with a gum exudate. Examination under a microscope may show if there is a microorganism involved. There is a recent paper on Diplodia sapinea here: Wingfield, M.J., Slippers, B., Barnes, I. et al. The Pine Pathogen Diplodia sapinea: Expanding Frontiers. Curr. For. Rep. 11, 2 (2025). https://doi.org/10.1007/s40725-024-00236-2

Pinus radiata

MichaelMulvaney wrote:

5 Jun 2025

The only other ACT electronic records are two 1998 records from Pierces Creek

Pinus radiata