In hibbertia single flower buds emerge from leaf clusteres usually toward the stem apex, you will never see buds in clusters as is depicted here. This is instead a Dillwynia (where clustered buds is a common trait). Sorry for the confusion Lisa.
Actually, having read that explanation, I'm probably not helping. What I'm trying to say is that in Hibbertia flowers are single, while in may groups of flowering peas (like Dillwynia) they are clustered. Looking at the first photo we can see 3 buds emerging off the end of a single stem which is not a trait of Hibbertia.
It’s interesting that this has come up as time lapsed. There are 5 sightings of dillwynia in the area just south of the powerlines. I’m sure none are the same plant. I guess the gps inaccuracies mean that mapping can’t be specific enough to keep from having the sightings overlap. Totally understandable but I’m pretty confident that none of those sightings are for the same plant. It would be a huge coincidence.
I think the timeline is a subset of Nearby Sightings, which are those sightings within 100m. GPS on phones and cameras is not precise and you might not be able to locate a particular plant.