Western australian wildlife management program no. 21 Declared Rare and Poorly Known Flora in the Esperance District



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Conservation Status
Current:  Priority 2
Known Populations
Pop.
Land
Last
No. of
No.
Population District
Shire
Status
Survey
Plants
Condition
1
Mt Le Grand 
Esp
Esp
NP
7.10.66
-
-
2
Lucky Bay 
Esp
Esp
NP
7.10.92
1
Good
3*
Thistle Cove 
Esp
Esp
NP
7.10.92
2
Good
4*
Peak Charles 
Esp
Esp
NP
18.9.93
500+
Post-fire
5
Esperance Bay 
Esp
Esp
-
1800s
-
-
6
Young River 
Esp
Esp
-
1800s
-
-
7
Oldfield River 
Esp
Rav
-
1800s
-
-
Response to Disturbance
It may be a disturbance opportunist, as a large population was found after a hot fire burnt Peak Charles in January 1991.
Susceptibility to Phytophthora Dieback
Unknown
Summary and Recommendations
O. hirsuta is poorly known, although it was collected four times by George Maxwell last century.
The taxonomic distinction between 
O. hirsuta and some other Opercularia is unclear; inspection of the type specimen is
required to verify collections in the Western Australian Herbarium (G. Keighery, personal communication).  A number
of plants with affinity to the described taxon, but less hairy, were found during recent surveys (not included in table).
References
Bentham (1867), Grieve and Blackall (1982).

288
Opercularia rubioides Juss. 
RUBIACEAE
An erect, rather stout and rigid plant, 3-6 cm tall, with numerous woody, hairless stems arising from the base.  Leaves
are lanceolate (10-25 mm), acute at the apex, lack stalks, and have margins that curve backwards; the upper surface is
covered in short, stiff hairs that are rough to touch (scabrous).  Flowers are numerous in globular heads which are borne
on very short, recurved stalks and subtended by 2 floral leaves; the calyx lobes are lanceolate.
Flowering Period:  October - November
Distribution and Habitat
Opercularia rubioides was described from a specimen collected last century by Drummond "towards Cape Riche".
Currently, it is known only from three localities, near Cascade and north of Jerramungup.  Near Lake Cairlocup it grows
on a broad valley floor in deep, white siliceous sand associated with 
Eucalyptus redunca mallee.  
Conservation Status
Current:  Priority 2
Known Populations
Pop.
Land
Last
No. of
No.
Population District
Shire
Status
Survey
Plants
Condition
1
Griffiths Rd 
Esp
Esp
Private
16.10.68
?Cleared
-
2
Lake Cairlocup 
Kat
Kent
NR
1.84
Rare
-
3
Jerramungup,NE Alb
Jer
-
30.10.65
-
-
Response to Disturbance
Unknown
Susceptibility to Phytophthora Dieback
Unknown
Summary and Recommendations
O. rubioides is an inconspicuous plant which may account for the lack of collections.  The location where it was
collected near Griffiths Rd in 1968 has probably been cleared for agriculture, however other populations may occur in a
nearby Nature Reserve.   
Surveys in the Cascade area in 1992 and 1993 failed to locate this species.  Further survey is required.
References
Bentham (1867), Grieve and Blackall (1982).

289
Paracaleana sp. Nuytsland (A.P.Brown s.n.)
ORCHIDACEAE
Esperance Duck Orchid
A small, inconspicuous orchid, 9-10 cm tall, with 1 or 2 flowers.  Leaves are 10-15 x 3-7 mm.  Flowers (15-18 x 8-12
mm) are reversed compared to a typical orchid and have green, broad spreading column wings which form a pouch
almost enclosing the stigma.  The unusual labellum is insect-like and flicks over when touched.
This taxon resembles 
Paracaleana linearifolia ms, but differs in having a narrower labellum and deeply cleft column
wings.
Flowering Period:  November
Distribution and Habitat
P.  sp.  Nuytsland is known from only one locality, about 150 km east of Esperance.  It grows in sandy soil above a
winter-wet flat.
Conservation Status
Current:  Priority 2
Known Populations
Pop.
Land
Last
No. of
No.
Population District
Shire
Status
Survey
Plants
Condition
1
Nuytsland Esp
Esp
NP
9.83
50+
-
Response to Disturbance
Unknown
Susceptibility to Phytophthora Dieback
Unknown
Summary and Recommendations
P. sp. Nuytsland should remain secure in Cape Arid National Park.  Currently there is no specimen in the Western
Australian Herbarium.  Further survey is required.
References
Hoffman and Brown (1992).

290
Patersonia inaequalis Benth.
IRIDACEAE
Unequal Bract Patersonia
Plants forming small clumps, 30 cm tall.  Leaves have parallel veins and are hairy near the base.  The flower stalks are
leafless and lack hairs.  The white or yellow flowers have a narrow, tubular perianth with 3 broad, spreading lobes; the
second outer bract is attached higher than the first.  The staminal tube is long and there are 3 stamens; the inferior ovary
is 3-celled.
Flowering PeriodAugust - October
Distribution and Habitat
Patersonia inaequalis occurs in Cape Le Grand National Park and on Mondrain Island in the Archipelago of the
Recherche.  Last century the type was collected by G. Maxwell near Stokes Inlet, however it has not been recorded from
there since.  
P. inaequalis grows in shallow sand over laterite or sand over granite rock, in coastal scrub heath,
associated with 
Banksia speciosa, Lambertia inermis or Eucalyptus angulosa.
Conservation Status
Current:  Priority 2
Known Populations
Pop.
Land
Last
No. of
No.
Population District
Shire
Status
Survey
Plants
Condition
1
Hellfire Bay 
Esp
Esp
NP
27.8.91
-
-
2a
Mt Le Grand 
Esp
Esp
NP
8.9.86
Common
-
2b
Mt Le Grand,W
Esp
Esp
NP
6.10.92
2
Good
3
Frenchman Peak 
Esp
Esp
NP
8.8.71
-
-
4*
Lucky Bay,N 
Esp
Esp
NP
6.10.92
5+
Good
5
Mondrain Island 
Esp
Esp
-
14.11.50
-
-
6
Stokes Inlet 
Esp
Esp
NP
1800s
-
-
* = new population
Response to Disturbance
Unknown
Susceptibility to Phytophthora Dieback
Unknown
Summary and Recommendations
In the Cape Le Grand National Park, 
P. inaequalis is usually widely scattered, with no more than a few plants together.
Further survey of larger islands in the Archipelago of the Recherche is desirable.  Monitoring of known populations is
recommended.
References
Bentham (1867), Blackall and Grieve (1974).

291
Persoonia sp. Scaddan (M.A.Burgman 4424)
PROTEACEAE
[ex. 
Persoonia aff. hakeiformis]
This taxon has affinity with 
Persoonia hakeiformis which is a much-branched, somewhat spreading shrub, 1.0-1.5 m tall
x 1.3 m wide.  Leaves are cylindrical and slightly tapering (25 mm) with a groove on the under side; a few hairs occur at
the base.  The yellow perianth has a large pouched segment (saccate) on the lower side; one of the 4 anthers is sterile;
the style is curved.
Flowering Period:  ?May
Distribution and Habitat
P. sp. Scaddan is known only from the Grass Patch-Scaddan area.  It grows in mallee woodland.
Conservation Status
Current:  Priority 2
Known Populations
Pop.
Land
Last
No. of
No.
Population District
Shire
Status
Survey
Plants
Condition
1
Grass Patch,E 
Esp
Esp
?Shire Rd Res.
27.5.82
-
-
& VCL
2
Truslove Esp
Esp
NR
10.84
-
-
Response to Disturbance
Unknown
Susceptibility to Phytophthora Dieback
Unknown
Summary and Recommendations
Further survey is required.
References
Blackall and Grieve (1988).

292
Phlegmatospermum eremaeum (J.M.Black) E.A.Shaw
BRASSICACEAE
A prostrate annual, 2 cm tall with closely-hairy stems (2-10 cm).  The basal leaves (to 4 cm) form a rosette; stem leaves
are elliptical (to 2 cm) and often toothed.  Flowers are pale purplish to white and are borne in dense clusters (racemes);
sepals (1.5-2 mm) and petals (2-3 mm) are small; stamens are flat and wide at the base; the style is very short.  The fruit
is an oval-shaped capsule with 5-7 seeds (1 mm) per locule.
Flowering Period:  August - October
Distribution and Habitat
Phlegmatospermum eremaeum occurs between Coolgardie and Eyre, south of the Trans Australian Railway line.  It
grows in red loam over limestone in chenopod shrubland.
This species is also found on the Eyre Peninsula in South Australia and in mallee scrub of South Australia and Victoria. 
Conservation Status
Current:  Priority 2
Known Populations
Pop.
Land
Last
No. of
No.
Population District
Shire
Status
Survey
Plants
Condition
1
Norseman,N Esp
Dund
-
8.8.51
-
-
2
Cocklebiddy,SSE Esp
Dund
NR
1.10.84
Common
-
3
Haig,S Gold
Bldr
-
1.10.84
-
-
4
Coolgardie Gold
Cool
-
1899
-
-
Response to Disturbance
Unknown
Susceptibility to Phytophthora Dieback
Unknown
Summary and Recommendations
P. eremaeum is apparently uncommon, although it is an inconspicuous annual, and its wide distribution from Coolgardie
to near Eyre suggests that more populations may occur.  It should remain secure in the Nuytsland Nature Reserve.
Further survey is required.
References
Hewson (1982).

293
Pimelea graniticola Rye
THYMELAEACEAE
An erect, spreading shrub, 0.2-1 m tall, with stems that are yellow-red near the flowers becoming almost black further
from the apex.  Leaves are alternate, lack hairs except when immediately below an inflorescence, pale green to bluish
green, and narrow-linear (4-17 x 0.5-1 mm).  Bisexual, cream or white flowers are borne in a compact head which is
surrounded by about 40 involucral bracts.  The bracts are similar in colour to the leaves, narrowly triangular to linear (6-
8 x 1-2 mm), densely hairy inside and with or without hairs on the outside; the margins have long hairs (ciliate).  Both
the floral tubes (6 mm) and sepals (2-5 mm) are very densely hairy on the outside and hairless inside.  
Pimelea graniticola resembles P. imbricata and P. villifera, but differs from both in having more numerous involucral
bracts; as well, it has narrower leaves compared to 
P. imbricata.  P. graniticola is distributed east of longitude 118o E,
while the other two species occur to the west of this meridian.
Flowering Period:  September - December
Distribution and Habitat
P. graniticola extends from Chiddarcooping Hill south to near Roes Rock, and from near Pingaring east to Stennet
Rock, a range of about 330 km.  It grows on granite outcrops, in soil pockets or shallow soil over granite sheets.
Conservation Status
Current:  Priority 2
Known Populations
Pop.
Land
Last
No. of
No.
Population District
Shire
Status
Survey
Plants
Condition
1
Stennet Rock 
Esp
Esp
VCL
18.11.92
2
Good
2a
Mt Gibbs 
Esp
Rav
VCL
13.11.79
1
-
2b
Mt Gibbs plain 
Esp
Rav
VCL
27.11.64
-
-
3
Chiddarcooping Mer
West
NR
7.11.90
20-30
Healthy
4
Mt Holland track 
Nar
?Kon
VCL
11.31
-
-
5
Roes Rock,NNW 
Alb
Jer
NP
17.11.85
Scattered
-
Response to Disturbance
Unknown
Susceptibility to Phytophthora Dieback
Unknown
Summary and Recommendations
P. graniticola is widely distributed, although most populations are small.  Further survey is required.
References
Mollemans 
et al. (1993), Rye (1988).

294
Scaevola brookeana F.Muell.
GOODENIACEAE
[= 
S. brooksiana J.H.Willis]
Heart-leaved Fan-flower
An erect shrub, to 60 cm tall.  Leaves are dull, bluish-green sometimes with a whitish bloom that rubs off (glaucous),
stem-clasping, broadening towards the base to form a heart shape, and widely toothed on the margins.  Usually 1 to 3,
blue flowers are borne in the axils of leaves; the corolla is hairless outside and the tubular portion of the corolla has
short hairs on the inside; the style has short, soft hairs below the middle and the indusium (at the apex of the style) is
only slightly downy.
Flowering Period:  April - May, October - December
Distribution and Habitat
Scaevola brookeana was first discovered by Miss S.J. Brooks last century "in the vicinity of Israelite Bay".  All recent
collections are from Mt Ragged, 40 km to the north-west of Israelite Bay, where it grows in shallow, grey-brown sandy
loam amongst quartzite rocks.
Conservation Status
Current:  Priority 2
Known Populations
Pop.
Land
Last
No. of
No.
Population District
Shire
Status
Survey
Plants
Condition
1
Mt Ragged 
Esp
Esp
NP
23.4.93
1 000+
Post-fire
Response to Disturbance
Two years after a hot burn (February 1991), many 
S. brookeana seedlings and a few larger, flowering resuckers were
present on the slopes of Mt Ragged.  Eight years earlier (January 1983), another fire burnt Mt Ragged and 
S. brookeana
was collected two years after that fire.  The population is therefore unlikely to be threatened by frequent fires.
Monitoring is recommended.
Susceptibility to Phytophthora Dieback
Unknown
Summary and Recommendations
S. brookeana is known in the Western Australian Herbarium as S. brooksiana.  It is recommended that the former name
be adopted (Carolin 1992).
References
Carolin (1992), Grieve and Blackall (1982), Mueller (1884).

295
Spyridium mucronatum Rye subsp. mucronatum RHAMNACEAE
A mid-dense shrub, 50-60 cm tall and 40-50 cm wide.  Leaves are alternate, narrow linear-ovate (3-4 x 1 mm), the upper
surface is bright green and glossy with the margins rolled backwards to nearly join in the middle on the under side.  The
base of each leaf has 2 appendages (stipules) that are relatively large (1-1.5 mm) and triangular-shaped.  Small heads of
4-6, cream-coloured flowers are numerous in the leaf axils; the outer surface of the calyx (1 mm) is covered in dense
white hairs, the inner surface lacks hairs; the short style (0.3 mm) has slightly enlarged, 3-lobed stigma.
Two subspecies are recognised, subsp. 
mucronatum and subsp. multiflorum.  The latter is more robust, has larger leaves
and more flowers per head than subsp. 
mucronatum.
Flowering Period:  March - May
Distribution and Habitat
Spyridium mucronatum subsp. mucronatum is a widespread taxon occurring from near Hatter Hill to south of
Balladonia; subsp. 
multiflorum is more restricted being distributed between Gibson and Mt Ragged, a distance of about
140 km.  The species grows in sand or sandy loam in mallee shrublands or heaths.  Associated species include
Eucalyptus uncinata, E. eremophila and E. leptocalyx.
Conservation Status
Current:  Priority 2
Known Populations
Pop.
Land
Last
No. of
No.
Population District
Shire
Status
Survey
Plants
Condition
subsp. mucronatum
1a
Fields Rd 
Esp
Esp
Shire Rd Res.
12.9.92
60+
Average
1b*
Fields Rd
Esp
Esp
Shire Rd Res.
13.9.92
10+
Good
2
Mt Ridley, NNE 
Esp
Esp
VCL
8.3.80
Rare
-
3a*
Clyde Hill,NW 
Esp
Esp
VCL
20.5.93
10
Good
3b*
Clyde Hill,NW
Esp
Esp
VCL
20.5.93
10+
Post-fire
4a
Mt Buraminya 
Esp
Esp
VCL
8.11.80
Scattered
-
4b
Parmango Rd
Esp
Esp
VCL
14.11.93
120+
Good
5
Ponier Rock,WSW 
Esp
Esp
VCL
11.12.90
Common
-
6
Dingo Rock,S 
Esp
Esp
VCL
22.5.93
100+
Good
7a
Salmon Gums,ENE 
Esp
Esp
-
6.3.80
Scattered
-
7b*
Salmon Gums,E
Esp
Esp
?Water Res.
18.11.93
100+
Good
8*
Truslove Esp
Esp
NR
22.9.92
10+
Good
9*
Truslove,E 
Esp
Esp
Shire Rd Res.
17.11.92
Frequent
Good
10*
Scaddan,N 
Esp
Esp
MRWA Rd Res.
24.9.92
Common
Good
11*
Scaddan Rd 
Esp
Esp
Shire Rd Res.
22.9.92
Few
Average
12*
Swan Lagoon 
Esp
Esp
NR
24.9.92
5
Good
13*
Norwood Rd 
Esp
Esp
Shire Rd Res.
25.9.92
20+
Good
14
West Point Rd 
Esp
Rav
?VCL
29.9.84
-
-
15
Frank Hann 
Esp
Rav
NP
28.10.92
200+
Good
16*
Frank Hann 
Esp
Rav
NP
28.10.92
10+
Good
17*
Hatter Hill,N 
Esp
Rav
VCL
27.10.92
50+
Good

296
Known Populations (cont’d)
Pop.
Land
Last
No. of
No.
Population District
Shire
Status
Survey
Plants
Condition
subsp. multiflorum
1
Scaddan,S Esp
Esp
-
13.11.76
-
-
2
Muntz Rd 
Esp
Esp
NR
10.84
-
-
3
Mt Ragged,SW 
Esp
Esp
NP
12.1.66
-
-
* = new population
Response to Disturbance
Unknown
Susceptibility to Phytophthora Dieback
Unknown
Summary and Recommendations
S. mucronatum was considered to be poorly known and possibly vulnerable by Burgman (1985b) and Newbey (1983).
Subsequent taxonomic work by Barbara Rye (personal communication) and further field surveys have shown subsp.
mucronatum to be widespread and common.  The more robust subsp. multiflorum, however, is poorly collected and
possibly rare.
References
Burgman (1985b), Newbey (1983).

297
Stipa exilis Vickery
POACEAE
A rather small, densely tufted grass, 25-60 cm tall and 5-15 cm wide, with mostly basal leaves to half the height.
Individual culms are slender, cylindrical, compressible, ribbed, and slightly rough-hairy just below the nodes; the 2
nodes are finely-hairy and up to 50% broader than the adjacent internodes.  Leaf sheaths (about 5 mm wide) are ribbed
and covered in rough, short stiff hairs.  The ligule is firmly membranous (0.5-2.5 mm) and obtuse; the auricle has a
dense to sparse tuft of long, straight or woolly hairs.  Leaf blades (to 25 cm x <0.5 mm) are strongly ribbed and softly-
hairy on the inner surface; the margins are rough with short hooks.  Flower clusters (panicle, to 20 x 3 cm) have unequal,
few-flowered branches (to 7 cm).  The spikelets (8-10 mm) have very unequal, 3 or 5-nerved glumes and a long awn
(35-55 mm) which is almost straight or gently twice bent. 
Flowering Period:  October
Distribution and Habitat
In Western Australia, 
Stipa exilis is known from only a few widely distributed localities, from near Cocklebiddy and the
Gnowangerup-Needilup area, nearly 800 km to the east.  It grows in well-drained, pale brown calcareous sandy loam, in
a moderately sheltered, flat marine plain in an 
Eucalyptus yalatensis high open shrubland, or in E. occidentalis
woodland.
This species is most abundant in South Australia where it grows in heath and scrub on sandy soil.  It barely extends into
Victoria and Western Australia (although not on the Nullarbor Plain).
Conservation Status
Current:  Priority 2
Known Populations
Pop.
Land
Last
No. of
No.
Population District
Shire
Status
Survey
Plants
Condition
1
Cocklebiddy,S Esp
Dund
NR
5.10.87
-
-
2
Loc 1401
Alb
Jer
-
10.11.75
-
-
3
Gnowangerup,S Kat
?Gno
-
10.10.62
-
-
Response to Disturbance
Unknown
Susceptibility to Phytophthora Dieback
Unknown
Summary and Recommendations
S. exilis is poorly known in Western Australia.  It should remain secure in the Nuytsland Nature Reserve.
References
Newbey (1983), Vickery (1980), Vickery 
et al. (1986).

298
Thysanotus brachyantherus Brittan
ANTHERICACEAE
A perennial herb that has a small rootstock with clustered fibrous roots that swell 5-7 cm from the stock into tubers (3-4
cm).  The flowering stem is surrounded by 4-5 hairless leaves (up to 15 cm).  Flower heads (panicle) are mostly solitary
with 1-4 flowers; the flowering stems are cylindrical, hairless and have triangular-shaped bracts (5-12 mm) at the lowest
branch; floral bracts are membranous (1.5-2 mm); flowers stalks (5-7 mm) are articulated about 1 mm from the base.
The flowers have 3 inner petals that are mauve or purple and have long fringes on the margins.  The 6 anthers (2-3 mm)
are slightly curved and twisted.

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