GHD | Report for Main Roads Western Australia - Hill River Offset Property, 61/34834 | 79
Family
Taxon
Status
Myrtaceae
Melaleuca ?trichophylla
Myrtaceae
Melaleuca viminea
Myrtaceae
Scholtzia sp.
Myrtaceae
?Scholtzia sp.
Myrtaceae
Verticordia grandis
Myrtaceae
Verticordia sp.
Orchidaceae
?Leporella fimbriata
Orchidaceae
Caladenia ?exilis
Orchidaceae
Caladenia flava
Orchidaceae
Caladenia longicauda subsp. borealis
Orchidaceae
Caladenia lorea
Orchidaceae
Caladenia sp.
Orchidaceae
Leporella fimbriata
Orchidaceae
Orchidaceae sp.
Orchidaceae
Pheladenia deformis
Orchidaceae
?Pheladenia deformis
Orchidaceae
Prasophyllum parvifolium
Orchidaceae
Pterostylis sanguinea
Orchidaceae
Thelymitra variegata
P2
Oxalidaceae
Oxalis sp.
*
Poaceae
Neurachne alopecuroidea
Poaceae
Poaceae sp.
*
Poaceae
Rytidosperma sp.
Polygalaceae
?Comesperma sp.
Polygalaceae
Comesperma ?acerosum
Polygalaceae
Comesperma scoparium
Polygalaceae
Comesperma sp.
Polygonaceae
Muehlenbeckia adpressa
Primulaceae
Lysimachia arvensis
*
Proteaceae
Adenanthos cygnorum subsp. cygnorum
Proteaceae
Banksia armata
Proteaceae
Banksia attenuata
Proteaceae
Banksia bipinnatifida subsp. multifida
Proteaceae
Banksia candolleana
Proteaceae
Banksia dallanneyi subsp. media
Proteaceae
Banksia ?dallanneyi subsp. media
Proteaceae
Banksia grandis
Proteaceae
Banksia grossa
Proteaceae
Banksia ?leptophylla var. melletica
Proteaceae
Banksia littoralis
Proteaceae
Banksia menziesii
Proteaceae
Banksia micrantha
Proteaceae
Banksia prionotes
Proteaceae
Banksia ?sclerophylla
80 | GHD | Report for Main Roads Western Australia - Hill River Offset Property, 61/34834
Family
Taxon
Status
Proteaceae
Banksia sessilis var. cygnorum
Proteaceae
Banksia shuttleworthiana
Proteaceae
Conospermum ? nervosum
Proteaceae
Conospermum sp .
Proteaceae
Conospermum triplinervium
Proteaceae
Grevillea delta
P2
Proteaceae
Grevillea synapheae subsp . pachyphylla
Proteaceae
Hakea anadenia
Proteaceae
Hakea auriculata
Proteaceae
Hakea conchifolia
Proteaceae
Hakea costata
Proteaceae
Hakea eneabba
Proteaceae
Hakea erinacea
Proteaceae
Hakea flabellifolia
Proteaceae
Hakea incrassata
Proteaceae
Hakea lissocarpha
Proteaceae
Hakea megalosperma
T
Proteaceae
Hakea neospathulata
Proteaceae
Hakea neurophylla
P4
Proteaceae
Hakea obliqua
Proteaceae
Hakea prostrata
Proteaceae
Hakea ruscifolia
Proteaceae
Hakea smilacifolia
Proteaceae
Hakea stenocarpa
Proteaceae
Hakea trifurcata
Proteaceae
Hakea varia
Proteaceae
Isopogon asper
Proteaceae
Isopogon drummondii
Proteaceae
Isopogon dubius
Proteaceae
Isopogon inconspicuus
Proteaceae
Isopogon sp .
Proteaceae
Lambertia multiflora
Proteaceae
Petrophile ? brevifolia
Proteaceae
Petrophile chrysantha
Proteaceae
Petrophile ? drummondii
Proteaceae
Petrophile linearis
Proteaceae
Petrophile macrostachya
Proteaceae
Petrophile seminuda
Proteaceae
Petrophile shuttleworthiana
Proteaceae
Stirlingia latifolia
Proteaceae
Strangea cynanchicarpa
Proteaceae
Synaphea aephynsa
Proteaceae
Synaphea sp .
Proteaceae
Synaphea spinulosa
GHD | Report for Main Roads Western Australia - Hill River Offset Property, 61/34834 | 81
Family
Taxon
Status
Pteridaceae
Cheilanthes austrotenuifolia
Restionaceae
Alexgeorgea subterranea
Restionaceae
Desmocladus ? lateriticus
Restionaceae
Lepidobolus quadratus
P3
Restionaceae
Lepidobolus sp .
Restionaceae
? Lepidobolus sp .
Restionaceae
? Leptocarpus sp .
Restionaceae
Restionaceae sp.
Rhamnaceae
Cryptandra myriantha
Rhamnaceae
Cryptandra pungens
Rhamnaceae
Cryptandra spyridioides
Rhamnaceae
Stenanthemum humile
Rhamnaceae
Trymalium odoratissimum
Rubiaceae
Opercularia vaginata
Rutaceae
Boronia cymosa
Rutaceae
Boronia ramosa
Rutaceae
Boronia ramosa subsp. anethifolia
Rutaceae
Diplolaena ferruginea
Rutaceae
Diplolaena sp .
Rutaceae
Philotheca spicata
Rutaceae
Rutaceae sp.
Santalaceae
Leptomeria empetriformis
Santalaceae
Santalum acuminatum
Stylidiaceae
Levenhookia sp .
Stylidiaceae
Stylidium ? hymenocraspedum
P3
Stylidiaceae
Stylidium ? piliferum
Stylidiaceae
Stylidium ? repens
Stylidiaceae
Stylidium ? torticarpum
P3
Stylidiaceae
Stylidium sp .
Thymelaeaceae
Pimelea ? angustifolia
Thymelaeaceae
Pimelea argentea
Thymelaeaceae
Pimelea floribunda
Thymelaeaceae
Pimelea sp .
Xanthorrhoeaceae
Xanthorrhoea drummondii
Xanthorrhoeaceae
Xanthorrhoea preissii
Xanthorrhoeaceae
Xanthorrhoea sp .
Zamiaceae
Macrozamia fraseri
Refer to Appendix A for conservation codes; * denotes introduced species
GHD | Report for Main Roads Western Australia - Hill River Offset Property, 61/34834
Flora Likelihood of Occurrence assessment guidelines
Likelihood of Occurrence
Guideline
Known
Species recorded within study area from field survey results.
Likely
Species previously recorded within 10 km and large areas of suitable habitat occur in the study area.
Possible
Species previously recorded within 10 km and areas of suitable habitat occur/may occur in the study area.
Unlikely
Species previously recorded within 10 km, but suitable habitat does not occur in the study area.
Highly unlikely
Species not previously recorded within 10 km, suitable habitat does not occur in the study area and/or the study area is
outside the natural distribution of the species.
Other considerations
Intensity of survey, availability of access, growth form type, recorded flowering times, cryptic nature of species
Definitions
Study area = a 20 km buffer around the survey area
Source information - desktop searches
PMST
–
DotE Protected Matters Search Tool (PMST) to identify flora listed under the EPBC Act potentially occurring within the study area (accessed July 2016)
DPaW
–
DPaW (2007-2016) records of threatened flora, database search within the study area (accessed July 2016)
NM
–
DPaW NatureMap (accessed July 2016)
Survey
–
recorded within the survey area during the 2016 assessment
References
Davis, RW, Hammer, T and Thiele, KR 2014, Two new and rare species of Ptilotus (Amaranthaceae) from the Eneabba sandplains, Western Australia, Nuytsia 24: 123
–
129.
Thompson, IR 2010, A revision of Cristonia (Fabaceae: Brongniartieae), Muelleria 28(1): 66-73.
GHD | Report for Main Roads Western Australia - Hill River Offset Property, 61/34834 | 83
Flora Likelihood of Occurrence assessment
Family
Taxon
Status
Description
Habitat
Flowering
Likelihood of Occurrence
Source
EPBC
Act
WC
Act
/DPaW
Amaranthaceae
Ptilotus clivicola
-
P2
Prostrate to
ascending perennial
herb to 0.1 m high
with reddish purple
flowers (Davis et al.
2014).
Kwongan heath on
gently sloping gravelly
rises with a shallow
covering of coarse sand.
Late
October
and early
November.
Possible
–
suitable habitat
present within survey area.
NM
Amaranthaceae
Ptilotus falcatus
-
P1
Prostrate to
ascending perennial
herb to 0.1 m high
with greenish brown
flowers becoming
white on the apex
(Davis et al. 2014).
North-east facing slope
in low heath on gravelly,
grey to light brown,
sandy loam soils.
Mid to late
October.
Possible
–
suitable habitat
present within survey area.
DPaW
Anarthriaceae
Lyginia excelsa
-
P1
Dioecious
rhizomatous, erect,
tufted herb, 0.6-1.5 m
high with rhizomes
on surface.
Sand with dry heath and
Banksia woodland.
March to
November.
Possible
–
suitable habitat
present within survey area.
NM
Apiaceae
Platysace
ramosissima
-
P3
Perennial herb to 0.3
m high with white-
cream flowers.
Sandy soils.
October to
November.
Possible
–
suitable habitat
present within survey area.
NM
Apiaceae
Xanthosia
tomentosa
-
P4
Prostrate to
ascending perennial
herb, 0.2-0.5 m high
to 2 m wide with
white-cream-pink
flowers.
Lateritic gravelly soils.
September
to
December.
Possible
–
suitable habitat
present within survey area.
NM
Asparagaceae
Thysanotus anceps -
P3
Rhizomatous,
leafless perennial
herb to 0.4 m high
with purple flowers.
White or grey sand,
lateritic gravel or laterite.
October to
December.
Possible
–
suitable habitat
present within survey area.
NM
DPaW
84 | GHD | Report for Main Roads Western Australia - Hill River Offset Property, 61/34834
Family
Taxon
Status
Description
Habitat
Flowering
Likelihood of Occurrence
Source
EPBC
Act
WC
Act
/DPaW
Asparagaceae
Thysanotus
glaucus
-
P4
Caespitose, glaucose
perennial herb, 0.1-
0.2 m high with
purple flowers.
White, grey or yellow
sand, sandy gravel.
October to
December
or January
to March.
Possible
–
suitable habitat
present within survey area.
NM
DPaW
Asparagaceae
Thysanotus sp.
Badgingarra (E.A.
Griffin 2511)
-
P2
Perennial herb to
0.35 m high with blue
flowers.
Grey sand with lateritic
gravel.
December.
Possible
–
suitable habitat
present within survey area.
NM
DPaW
Asparagaceae
Thysanotus
vernalis
-
P3
Perennial herb to 0.3
m high with purple
flowers.
Sandy loam.
September
to October.
Possible
–
suitable habitat
present within survey area.
NM
DPaW
Asteraceae
Rhetinocarpha
suffruticosa
-
P1
Woody perennial
herb to 0.8 m high
with white-cream
flowers.
Red-brown loamy clay,
gravelly loam or clay
loam over laterite.
Slopes and small ridges.
November
to
December
Unlikely
–
limited habitat
present within the survey
area.
DPaW
Brassicaceae
Lepidium
pseudotasmanicum
-
P4
Erect annual or
biennial herb, 0.2-0.4
m high with white-
green flowers.
Loam or sand.
February or
December.
Possible
–
suitable habitat
present within survey area.
NM
Byblidaceae
Byblis gigantea
-
P3
Small, branched
perennial herb to
0.45 m high with
pink-purple/white
flowers.
Sandy-peat swamps.
Seasonally wet areas
September
to
December
or January.
Highly Unlikely
–
No sandy
peat swamps recorded within
the survey area.
NM
Casuarinaceae
Allocasuarina
grevilleoides
-
P3
Dioecious,
lignotuberous shrubs,
0.15-0.4 m high.
Sand over laterite,
gravel.
No
information
available.
Possible
–
suitable habitat
present within survey area.
NM
Casuarinaceae
Allocasuarina
ramosissima
-
P3
Dioecious, somewhat
divaricate shrub, 0.3-
1.2 m high.
Lateritic soils, gravel.
No
information
available.
Possible
–
suitable habitat
present within survey area.
NM
DPaW
Celastraceae
Stackhousia sp.
Red-blotched
corolla (A. Markey
911)
-
P3
Perennial, erect herb
with yellow flowers.
Sandy clay.
No
information
available.
Possible
–
suitable habitat
present within survey area.
NM
DPaW
GHD | Report for Main Roads Western Australia - Hill River Offset Property, 61/34834 | 85
Family
Taxon
Status
Description
Habitat
Flowering
Likelihood of Occurrence
Source
EPBC
Act
WC
Act
/DPaW
Centrolepidaceae
Centrolepis milleri
-
P3
Annual herb to 0.06
m tall.
White sand or grey-
brown sandy clay.
No
information
available.
Possible
–
suitable habitat
present within survey area.
NM
Cyperaceae
Caustis gigas
-
P2
Rhizomatous, robust
perennial sedge to 2
m high.
White or grey sand.
May.
Possible
–
suitable habitat
present within survey area.
NM
Cyperaceae
Eleocharis
keigheryi
VU
VU
Rhizomatous,
clumped perennial
sedge to 0.4 m high
with green flowers.
Clay, sandy loam.
Emergent in freshwater
creeks or claypans.
August to
November.
Unlikely
–
minimal suitable
habitat present within the
survey area.
NM
PMST
DPaW
Dasypogonaceae
Calectasia
browneana
-
P2
Spreading,
caespitose perennial
herb, 0.2-0.5 m high
to 0.4 m wide with
blue-purple flowers.
White-grey sand,
laterite. Adjacent to wet
areas of creek line.
June to
August.
Possible
–
suitable habitat
present within survey area.
NM
DPaW
Dasypogonaceae
Calectasia cyanea
CR
CR
Rhizomatous, clump
forming, woody
perennial herb, 0.1-
0.6 m high to 0.3 m
high with blue/purple
flowers.
White, grey or yellow
sand, gravel.
June to
October.
Possible
–
suitable habitat
present within survey area.
NM
Dasypogonaceae
Calectasia palustris -
P2
Stilt-rooted herb,
stems to 0.7 m high
with blue flowers.
White or grey sand.
Seasonally inundated
swamplands.
July to
October.
Unlikely
–
minimal to no
suitable seasonally inundated
swamplands present within
survey area.
DPaW
Dilleniaceae
Hibbertia
helianthemoides
-
P4
Spreading to erect,
low or prostrate
shrub to 0.3 m high
with yellow flowers.
Clayey sand over
sandstone or loam over
quartzite. Hill and scree
slopes.
July or
September
to October.
Highly Unlikely
–
Species
records are 100 km north of
Albany, not within the same
Bioregion.
NM
Dilleniaceae
Hibbertia
propinqua
-
P4
Spreading shrub to
0.5 m high with
yellow flowers.
Gravelly sand on slopes.
August to
October.
Possible
–
suitable habitat
present within survey area.
NM
DPaW
86 | GHD | Report for Main Roads Western Australia - Hill River Offset Property, 61/34834
Family
Taxon
Status
Description
Habitat
Flowering
Likelihood of Occurrence
Source
EPBC
Act
WC
Act
/DPaW
Droseraceae
Drosera
allantostigma
-
P1
Fibrous-rooted,
rosette perennial
herb to 0.08 m high
with white flowers.
Loam, silica sand or
peaty soils. Margins of
winter-wet depressions.
November
to
December.
Unlikely
–
minimal suitable
habitat present within the
survey area.
NM
DPaW
Droseraceae
Drosera marchantii
subsp. prophylla
-
P3
Erect, tuberous,
perennial herb, 0.1-
0.3 m high with white
flowers.
Laterite-silica sand soils
on hilltops.
June to
July.
Possible
–
suitable habitat
present within survey area.
NM
DPaW
Elaeocarpaceae
Tetratheca
angulata
-
P3
Lax to erect, slender
shrub, 0.2-0.3 m high
with pink/purple
flowers.
Sandy to gravelly laterite
soils. Low hill crests,
breakaways with
massive laterite
boulders.
September
to
December.
Unlikely
–
minimal suitable
habitat present within the
survey area.
NM
DPaW
Elaeocarpaceae
Tetratheca
nephelioides
CR
EN
Caespitose, dwarf
shrub, to 0.3 m high
with purple flowers.
White-grey sand, yellow-
brown clayey sand,
gravel, laterite.
Outcrops, undulating
hills, ridges.
September.
Possible
–
suitable habitat
present within survey area.
NM
PMST
Elaeocarpaceae
Tetratheca remota
-
P1
Small, slender shrub
to 0.4 m high with
pink flowers.
Sandy gravel.
November.
Possible
–
suitable habitat
present within survey area.
NM
DPaW
Ericaceae
Andersonia gracilis
EN
VU
Slender erect or open
straggly shrub, 0.1-
0.5 m high with
white-pink-purple
flowers.
White/grey sand, sandy
clay, gravelly loam.
Winter-wet areas, near
swamps.
September
to
November.
Possible
–
suitable habitat
present within survey area.
PMST
DPaW
Ericaceae
Andersonia sp. Mt
Lesueur (E.A.
Griffin 5536)
-
P2
Open, straggly shrub
to 0.6 m high with
cream flowers.
Sandy clay over
sandstone. Breakaway
slope.
March to
May.
Possible
–
suitable habitat
present within survey area.
NM
DPaW
GHD | Report for Main Roads Western Australia - Hill River Offset Property, 61/34834 | 87
Family
Taxon
Status
Description
Habitat
Flowering
Likelihood of Occurrence
Source
EPBC
Act
WC
Act
/DPaW
Ericaceae
Conostephium
magnum
-
P4
Erect, compact shrub
to 2 m high with pint-
purple flowers.
White-grey sands
sometimes associated
with laterite gravels.
Sand dunes,
swampland, disturbed
roadside, drainage
channels, open
woodland.
July to
September.
Possible
–
suitable habitat
present within survey area.
NM
DPaW
Ericaceae
Leucopogon
obtectus
EN
EN
Erect shrub, 0.5-1.7
m high with cream-
yellow flowers.
Grey sand.
August to
October.
Possible
–
suitable habitat
present within survey area.
NM
PMST
Ericaceae
Leucopogon
ozothamnoides
-
P1
Shrub to 0.2 m high
with white flowers.
Gravelly soils, sandy
clay loam.
October.
Highly Unlikely
–
Species
records are 150 km north of
Albany, not within the same
Bioregion.
NM
Ericaceae
Leucopogon
plumuliflorus
-
P2
Slender, multi-
stemmed shrub, 0.1-
0.4 m high with
white/white-pink
flowers.
Lateritic sandy soils.
Amongst lateritic
boulders, hillslopes.
April or
July to
November.
Unlikely
–
minimal suitable
habitat present within the
survey area.
NM
DPaW
Ericaceae
Leucopogon sp.
Badgingarra (R.
Davis 421)
-
P2
Open, erect shrub,
0.7-1 m high with
white flowers.
Grey sand, dry white
sand. Hills and plains.
December.
Possible
–
suitable habitat
present within survey area.
DPaW
Euphorbiaceae
Beyeria cinerea
subsp. cinerea
-
P3
Shrub.
Sand or sandy loam.
No
information
available.
Possible
–
suitable habitat
present within survey area.
NM
Euphorbiaceae
Beyeria gardneri
-
P3
Shrub, 0.25-0.5 m
high with yellow
flowers.
Yellow sand.
August to
September.
Unlikely
–
no yellow sand
observed within the survey
area.
DPaW
Euphorbiaceae
Beyeria similis
-
P2
Erect, compact
shrub, 0.25-0.7 m
high with yellow
flowers.
Yellow or red clayey
sand. Sandplains.
August to
September.
Unlikely
–
no suitable habitat
present within the survey
area.
NM
DPaW
88 | GHD | Report for Main Roads Western Australia - Hill River Offset Property, 61/34834
Family
Taxon
Status
Description
Habitat
Flowering
Likelihood of Occurrence
Source
EPBC
Act
WC
Act
/DPaW
Fabaceae
Acacia carens
-
P2
Open, broom-like
shrub, 0.35-0.6 m
high with yellow
flowers.
Gravel or sandy gravel.
Lateritic uplands.
April to
June.
Possible
–
suitable habitat
present within survey area.
NM
Fabaceae
Acacia
cummingiana
-
P3
Sprawling, straggly
shrub, 0.3-0.5 m high
with yellow flowers.
Grey or yellow sand,
lateritic gravel.
Sandplains, lateritic
breakaways.
May to
June or
August.
Possible
–
suitable habitat
present within survey area.
NM
DPaW
Fabaceae
Acacia epacantha
-
P3
Dense, bushy, spiny
shrub, 0.2-0.5 m high
with yellow flowers.
Lateritic gravelly loam or
clay.
July to
August.
Possible
–
suitable habitat
present within survey area.
NM
DPaW
Fabaceae
Acacia forrestiana
VU
VU
Erect, open, prickly
shrub, 0.4-1 m high
with yellow flowers.
Lateritic gravelly soils,
clay loam over
sandstone. Gullies, hills,
breakaways.
November
to
December.
Possible
–
suitable habitat
present within survey area.
NM
PMST
DPaW
Fabaceae
Acacia lasiocarpa
var. lasiocarpa
Cockleshell Gully
variant (E.A. Griffin
2039)
-
P2
Shrub, 0.35-0.5 m
high with yellow
flowers.
Grey-yellow sand with
laterite. Low open heath.
August.
Possible
–
suitable habitat
present within survey area.
NM
DPaW
Fabaceae
Acacia plicata
-
P3
Erect shrub, 0.9-2 m
high with yellow
flowers.
Loamy and clayey soils,
often over sandstone or
siltstone. Along drainage
lines.
August to
October.
Unlikely
–
suitable habitat not
present within the survey
area.
NM
DPaW
Fabaceae
Acacia retrorsa
-
P2
Prostrate, sprawling
shrub, 0.05-0.5 m
high with yellow
flowers.
Grey sand and lateritic
gravel, sandy loam.
August to
September.
Known
–
species recorded
within the survey area.
NM
DPaW
Fabaceae
Acacia tayloriana
-
P4
Prostrate shrub with
cream-white flowers.
Grey or yellow/orange
sandy soils, lateritic
gravel, clay loam.
Winter-wet areas.
January.
Highly Unlikely
–
Not
recorded within the same
Bioregion. Recorded along
the south coast.
NM
Fabaceae
Acacia wilsonii
-
EN
Low, spreading, wiry
shrub, 0.2-0.5 m high
with yellow flowers.
White/yellow sand and
lateritic gravel, sandy
clay over laterite.
December
to
February.
Possible
–
suitable habitat
present within survey area.
NM
DPaW
|