Katandra has a remarkable diversity of native plant species. The plants grow in various communities. The character of each of those communities depends on geology, soil, topography and climate.

On the top of the escarpment at the western edge is open woodland on shallow, low-nutrient sandy soil derived from Hawkesbury Sandstone. Within the woodland to the north are patches of wet heathland. Below the escarpment on slopes and in the sheltered gullies with an easterly aspect, are soils that are deeper and more fertile; here there is moist, tall open-forest and along the creek lines, moist closed-forest (rainforest).

Katandra provides valuable habitat for native birds and fauna, and is important for the conservation of rare and uncommon plant species. Some of the plant species here have not been found in nearby Ku-ring-gai Chase National Park.
A Short List of Wildflowers visible from the Walking Tracks

APIACEAE
Actinotus helianthi, Flannel Flower
Actinotus minor, Lesser Flannel Flower
Platysace lanceolata
Platysace linearifolia

ASCLEPIADACEAE
Marsdenia suaveolens

ASTERACEAE
Ozothamnus diosmifolius, Paper Daisy
Helichrysum elatum, White Paper Daisy
Olearia tomentosa

BIGNONIACEAE
Pandorea pandorana, Wonga Wonga Vine

CAMPANULACEAE
Wahlenbergia gracilis, Native Bluebell

CUNONIACEAE

Callicoma serratifolia, Black Wattle

CYPERACEAE
Caustis flexuosa

COLCHICACEAE (LILIACEAE)
Burchardia umbellata, Milkmaids

DILLENIACEAE
Hibbertia dentata, Twining Guinea Flower
Hibbertia fasciculata

DROSERACEAE
Drosera auriculata, Sundew
Drodera peltata, Sundew
Drosera spatulata, Sundew

EPACRIDACEAE
Epacris longiflora, Fuchsia Heath
Leucopogon ericoides, Bearded Heath
Leucopogon lanceolatus
Woollsia pungens

ELAEOCARPACEAE
Elaeocarpus reticulatus, Blueberry Ash

EUPHORBIACEAE
Breynia oblongifolia
Ricinocarpos pinifolius, Wedding (prev. Helichrysum)

FABACEAE
Bossiaea heterophylla, Variable Bossiaea
Dillwynia floribunda, Parrot Pea
Dillwynia retorta, Eggs and Bacon

Gompholobium grandiflorum, Handsome Wedge-pea

FABACEAE continued
Gompholobium latifolium, Broad Wedge-pea
Hardenbergia violacea, False Sarsaparilla
Hovea linearis
Kennedia rubicunda, Dusky Coral Pea
Podolobium ilicifolium, Holly-leaf Pea (prev Oxylobium)
Phyllota grandiflora
Platylobium formosum, Handsome Flat-pea
Pultenaea daphnoides
Pultenaea flexilis

FABACEAE - Mimosoideae
Acacia linifolia
Acacia longissima
Acacia oxycedrus, Spike Wattle
Acacia terminalis, Sunshine Wattle
Acacia ulicifolia, Prickly Moses

GOODENIACEAE
Dampiera stricta
Goodenia heterophylla
Goodenia ovata
Scaevola ramosissima, Hairy Fan Flower

IRIDACEAE
Patersonia sericea, Native Iris

LAMIACEAE
Prostanthera denticulata, Mint Bush

LOGANIACEAE
Logania albiflora
Mitrasacme polymorpha


MYRTACEAE
Callistemon linearis, Narrow-leafed Bottlebrush
Callistemon rigidus, Stiff-leafed Bottlebrush
Kunzea ambigua
Leptospermum trinervium, Tea-Tree
Leptospermum polygalifolium, Yellow Tea-Tree
Leptospermum squarrosum, Peach-flowered Tea-Tree

ORCHIDACEAE
Cryptostylis erecta, Bonnet orchid
Dendrobium linguiforme, Tongue Orchid
Dendrobium speciosum, Rock Lily
Pterostylis acuminata, Nodding Greenhood
Pterostylis nutans, Nodding Greenhood

PHORMIACEAE (LILIACEAE)
Dianella caerulea

RUTACEAE
Boronia ledifolia
Boronia mollis
Boronia thujona
Leionema (Phebalium) dentatum

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