Grevilleas are family Proteaceae plants, which are often confused with hakeas. As a general rule of thumb, grevilleas have flowers at the end of the shoot (terminal), and have papery seed capsules, whereas hakeas flower stalks usually arise from the leaf axil (where it joins the stem) and they have woody nuts. 
There are only two grevilleas in Foxes Lair, but several hakeas.
 Grevillea tenuiflora/Tassel grevillea  is a beautiful but atypical grevillea with narrow clustered flowers and a mildly rude pistil.
It has unusual and stunning flowers that remind me of a picture of marine spoon worms that my daughter sent from Korea. Koreans call them gaebul (penis fish), and consume them with relish to enhance their (ahem) vigour. Without claiming efficacy, I recommend a stroll on the Banksia Trail in September to see masses of the flowers. Latin scholars amongst you know that tenuiflora is a taxonomist’s way of saying ‘narrow flower’.

Grevillea leptobotrys/ Tangled Grevillea is a great ground cover orclumping plant, which flowers on Banksia Trail brown stony gravels in November/December. Its germination is stimulated by fire.

Most grevilleas set few seed pods, but I discovered an exception when my daughter gave me a  Grevillea olivaceae plant for my native garden. It is a vigourous shrub which produces masses of yellow flowers, which all develop a pod containing a tasty kernel. red capped parrots got every kernel (which we enjoyed).

.A highlight was the beautiful but uncommon Pimelea graniticola that only occurs on granite rocks.
On the north and southern slopes where it is too steep for 4WDs (but I expect to see one in a heap there one day), you can still see the shelves and plates of sheet rock that are a feature of large granite domes.
For the geologically minded (as one should be!) these domes called plutons formed hundreds of millions of years ago from molten rock that forced its way up as geological plates were colliding and solidified some kilometres below the soil surface. As the rock above gradually eroded away and sediments were taken to the sea, these domes were exposed. The surface cracked in sheets that themselves split into jointed blocks from removal of the weight above them and weathering (exfoliation). Ice crystals formed from frost affected seepage can cause splits. More information here.

I became aware of another form of rock 'weathering' after huge wildfire in February 2022.  The intense fire caused the equivalent of thousands of years of rock 'weathering' in a single event when flakes up to one centimetre thick fell off to reveal unweathered underlying granite.

The Elbow Orchid Spiculaea ciliata is a remarkable plant, which flowers from November to January by storing water in its fleshy stem. I recently learnt about it while perusing Narrogin Herbarium specimens, and was assured that I could find them amongst pincushion plants on Yilliminning Rock. The rock was beautiful after recent rain until the delightful discovery of a champagne cork and a condom prompted me to move away from 4WD areas to a surprising display of late season flowers in more protected places.
After a long time crawling over very prickly plants, I found a single insignificant orchid. You have to be a masochist or an orchid enthusiast to do this. Probably both.
Having said that the orchid is highly evolved and intricate. The insect-like labellum that emits a pheromone to attract male Thynnid wasps. The males normally pick up flightless females and deposit them on a flower before mating. As the labellum is attached by a weak hinge, when the male tries to lift his “mate”, it swings up and is held by the mantis-like wings (note serrations) to pollinate and collect more pollen as it struggles to free itself.

Hemiparasites such as the lush flowering Nuytsia floribunda/Christmas tree steal moisture and nutrients from adjoining plants. 
Microstilt plants reduce exposure to high soil temperatures by elevating the plant above the soil.