A number of <strong>Declared</strong> <strong>Rare</strong> <strong>Flora</strong> are known from few populations or have very small population sizes, mak<strong>in</strong>g <strong>the</strong>mparticularly vulnerable to localised disturbance. The total number of populations for each taxon, <strong>in</strong>clud<strong>in</strong>g thoseoccurr<strong>in</strong>g outside <strong>the</strong> <strong>District</strong>, was taken <strong>in</strong>to consideration.Taxa at risk through low numbers <strong>in</strong> some or all of <strong>the</strong>ir known populations, or which are known from one populationonly are:Caladenia bryceana subsp. cracens ms Glyceria drummondiiConostylis dielsii subsp. teresHalosarcia bulbosaDarw<strong>in</strong>ia masoniiHypocalymma longifoliumDrummondita ericoidesLechenaultia chloranthaEremophila viscida Pterostylis sp. Northampton (S.D.Hopper 3349)Eucalyptus crucis subsp. praecipuaVerticordia spicata subsp. squamosaEucalyptus cupreaIn addition, three taxa have been recorded from <strong>the</strong> <strong>District</strong> <strong>in</strong> recent times but <strong>the</strong>ir populations have not yet beenrefound. These are:Beyeria lepidopetalaChorizema humileLeucopogon marg<strong>in</strong>atus(iii)Transport CorridorsPopulations located near roads, railways <strong>and</strong> firebreaks are vulnerable to damage or destruction by ma<strong>in</strong>tenanceoperations. Such activities <strong>in</strong> <strong>the</strong> vic<strong>in</strong>ity of <strong>Rare</strong> <strong>Flora</strong> populations require careful monitor<strong>in</strong>g. 29 populations, aquarter of <strong>the</strong> total number of populations of <strong>Declared</strong> <strong>Rare</strong> <strong>Flora</strong> <strong>in</strong> <strong>the</strong> <strong>Geraldton</strong> <strong>District</strong>, occur on or partly on road,<strong>and</strong> <strong>in</strong> one species, rail reserves. Most of <strong>the</strong>se reserves are narrow <strong>and</strong> can be affected, both directly <strong>and</strong> <strong>in</strong>directly, by<strong>the</strong> use <strong>and</strong> nature of adjo<strong>in</strong><strong>in</strong>g l<strong>and</strong>s. Threats <strong>in</strong>clude weed <strong>in</strong>vasion, periodic graz<strong>in</strong>g, drift of chemical sprays <strong>and</strong>fertilisers, fencel<strong>in</strong>e ma<strong>in</strong>tenance <strong>and</strong> periodic burn<strong>in</strong>g. The vegetation on road reserves can also be affected by rubbishdump<strong>in</strong>g, uncontrolled vehicle access, wildflower pick<strong>in</strong>g <strong>and</strong> camp<strong>in</strong>g.The majority of road reserves are vested <strong>in</strong> local authorities or Ma<strong>in</strong> Roads W.A., <strong>and</strong> rail reserves <strong>in</strong> Westrail.Accidental damage can occur dur<strong>in</strong>g road works such as ma<strong>in</strong>tenance operations, (grad<strong>in</strong>g, weed control), dra<strong>in</strong>ageworks, road/rail upgrad<strong>in</strong>g, metal dumps <strong>and</strong> s<strong>and</strong>/gravel extraction.O<strong>the</strong>r utilities such as power-l<strong>in</strong>es, water pipel<strong>in</strong>es <strong>and</strong> Telstra l<strong>in</strong>es generally follow road <strong>and</strong> rail reserves, so that anyma<strong>in</strong>tenance, upgrad<strong>in</strong>g or management of <strong>the</strong>se utilities close to known populations can damage plants. This can be <strong>in</strong><strong>the</strong> form of mechanical damage by mach<strong>in</strong>ery <strong>and</strong> equipment, or by chemicals used to control weeds around poles oralong pipel<strong>in</strong>es.Management <strong>and</strong> field personnel with<strong>in</strong> Shires <strong>and</strong> <strong>the</strong> Government departments need to know where <strong>the</strong> populations of<strong>Declared</strong> <strong>Rare</strong> <strong>and</strong> Priority <strong>Flora</strong> occur to avoid accidental destruction of plants. This is carried out currently bynotification letters from CALM <strong>and</strong> <strong>the</strong> use of l<strong>in</strong>ear markers <strong>in</strong> <strong>the</strong> field.The follow<strong>in</strong>g taxa are most threatened:Caladenia elegans msHalosarcia bulbosaConostylis dielsii subsp. teresLeucopogon marg<strong>in</strong>atusConostylis micrantha Pterostylis sp. Northampton (S.D.Hopper 3349)Eremophila niveaStylidium coroniformeEucalyptus syn<strong>and</strong>raVerticordia spicata subsp. squamosaGrevillea christ<strong>in</strong>eae(iv)Short-lived Disturbance OpportunistsSome taxa are favoured by disturbance, ei<strong>the</strong>r because <strong>the</strong>y cannot compete with associated species <strong>in</strong> undisturbedvegetation or disturbance is essential for recruitment. Included <strong>in</strong> this category are taxa favoured both by fire <strong>and</strong> byphysical disturbance of <strong>the</strong> soil such as occurs when road edges are graded or firebreaks are ploughed. A populationwhich no longer exists as adult plants is considered to be present <strong>in</strong> <strong>the</strong> soil as a seed bank, await<strong>in</strong>g suitabledisturbance to promote seedl<strong>in</strong>g growth, unless <strong>the</strong> population site has become degraded <strong>and</strong> is now unlikely to support<strong>the</strong> population.26
Taxa <strong>in</strong> this category, which present special management difficulties, are:Beyeria lepidopetalaConostylis dielsii subsp. teresConostylis micranthaDaviesia speciosaStylidium coroniforme(v)L<strong>and</strong> AcquisitionAcquisition of l<strong>and</strong> by <strong>the</strong> Department, ei<strong>the</strong>r by donation, exchange or purchase, is required for those taxa not wellrepresented on conservation reserves. This would enable appropriate management <strong>and</strong> protection practices to beimplemented on l<strong>and</strong> ma<strong>in</strong>ta<strong>in</strong>ed, as much as possible, <strong>in</strong> a natural state. Plants occurr<strong>in</strong>g on l<strong>and</strong> reserved for natureconservation are generally considered to be less threatened than those on l<strong>and</strong> designated for o<strong>the</strong>r purposes. It shouldbe noted, however, that presence on a reserve contributes to, but does not guarantee, population survival. Reserves aresubject to threats such as weed <strong>in</strong>vasion, disease <strong>in</strong>fection, drought, altered dra<strong>in</strong>age <strong>and</strong> water tables, uncontrolled fires<strong>and</strong> where approved, m<strong>in</strong><strong>in</strong>g activities.The follow<strong>in</strong>g are priority taxa for l<strong>and</strong> acquisition:Darw<strong>in</strong>ia masoniiHalosarcia bulbosaEucalyptus cupreaHypocalymma longifoliumGlyceria drummondii Pterostylis sp. Northampton (S.D.Hopper 3349)Grevillea christ<strong>in</strong>eae(vi)Fenc<strong>in</strong>g<strong>Declared</strong> <strong>Rare</strong> <strong>Flora</strong> populations on private property are sometimes on farml<strong>and</strong> where <strong>the</strong>y require protection fromgraz<strong>in</strong>g by domestic stock. In some situations l<strong>and</strong>holders <strong>the</strong>mselves have excluded stock, <strong>and</strong> <strong>in</strong> o<strong>the</strong>rs CALM hasprovided fenc<strong>in</strong>g materials as part of formal agreements. O<strong>the</strong>r populations on pastoral leases may also require fenc<strong>in</strong>gto prevent graz<strong>in</strong>g, usually by sheep <strong>and</strong>/or goats.Rabbits are also a widespread problem, particularly on s<strong>and</strong>y soils <strong>and</strong> granite outcrop areas.The follow<strong>in</strong>g taxa require protection from graz<strong>in</strong>g, ei<strong>the</strong>r by fence construction or agreement with l<strong>and</strong>owners toexclude stock from population localities:Caladenia elegans ms Pterostylis sp. Northampton (S.D.Hopper 3349)Eremophila viscidaVerticordia spicata subsp. squamosaHalosarcia bulbosa(vii)M<strong>in</strong><strong>in</strong>gM<strong>in</strong><strong>in</strong>g, particularly for gold, occurs throughout many parts of <strong>the</strong> pastoral area of <strong>the</strong> <strong>District</strong>. M<strong>in</strong><strong>in</strong>g activities whichmay affect <strong>Declared</strong> <strong>Rare</strong> <strong>Flora</strong> <strong>in</strong>clude exploration (clear<strong>in</strong>g of survey l<strong>in</strong>es <strong>and</strong> drill<strong>in</strong>g operations), actual m<strong>in</strong>e siteestablishment, provision of services (road-mak<strong>in</strong>g, power) <strong>and</strong> <strong>in</strong>creased recreation activity by m<strong>in</strong>e workers. Closeliaison between companies, CALM, <strong>the</strong> Department of M<strong>in</strong>erals <strong>and</strong> Energy <strong>and</strong> <strong>the</strong> Department of EnvironmentalProtection is essential.O<strong>the</strong>r forms of m<strong>in</strong><strong>in</strong>g <strong>in</strong> <strong>the</strong> <strong>District</strong> <strong>in</strong>clude gravel/s<strong>and</strong> m<strong>in</strong><strong>in</strong>g by local authorities <strong>and</strong> <strong>the</strong> extraction of nickel,copper <strong>and</strong> iron ore. Oil is extracted from an area <strong>in</strong> <strong>the</strong> south of <strong>the</strong> <strong>District</strong>.Taxa most at risk are:Darw<strong>in</strong>ia masoniiDaviesia speciosa(viii)RecreationMany of <strong>the</strong> <strong>Declared</strong> <strong>Rare</strong> <strong>Flora</strong> <strong>in</strong> <strong>the</strong> <strong>District</strong> occur <strong>in</strong> remote areas <strong>and</strong> are <strong>the</strong>refore at no risk from recreationalactivities. However, a few occur at or near heavily used sites where <strong>the</strong>y are actually or potentially at risk fromrecreational activities. These sites <strong>in</strong>clude well known lookout areas <strong>in</strong> <strong>the</strong> Kalbarri National Park, <strong>the</strong> more accessiblenature reserves <strong>and</strong> <strong>the</strong> verges of <strong>the</strong> more major roads, where <strong>the</strong>re is attractive natural vegetation. These activitiesmay <strong>in</strong>clude bushwalk<strong>in</strong>g, camp<strong>in</strong>g <strong>and</strong> off-road vehicle use. Risk may be from trampl<strong>in</strong>g, pick<strong>in</strong>g or <strong>the</strong> spread of27
- Page 2 and 3: Department of Conservation and Land
- Page 4 and 5: TABLE OF CONTENTSPagePage4
- Page 6: Grevillea fililoba.................
- Page 10 and 11: ABBREVIATIONSCoCoorow ShireCVChapma
- Page 12 and 13: Figure 1.Location of the Geraldton
- Page 14 and 15: Figure 2.The Geraldton District cov
- Page 16 and 17: Reviewing Departmental policy on De
- Page 19 and 20: Mingenew areas has loamy soils, whi
- Page 22 and 23: (1942b) who was appointed as Govern
- Page 24 and 25: PART THREE: PRIORITY FLORA IN THE G
- Page 28 and 29: disease. Recreation should be contr
- Page 30 and 31: Populations in need of linear marki
- Page 32 and 33: Drakonorchis barbarella ms 14 1 1 0
- Page 34 and 35: TABLE 2.Geraldton District Declared
- Page 36 and 37: Gunniopsis rubra 2Homalocalyx chapm
- Page 38 and 39: Malleostemon sp. Kalbarri (L.A.Crav
- Page 40 and 41: Table 4. Priority Four Taxa in the
- Page 42 and 43: DECLARED RARE FLORAConservation cod
- Page 44 and 45: Levenhookia octomaculata ..........
- Page 46 and 47: Millotia jacksonii.................
- Page 48 and 49: GLOSSARYabaxialacheneacuminateacute
- Page 50 and 51: cormcorollacorymbcrispedcrowncuneat
- Page 52 and 53: herbherbaceoushilumhyalinehybridhyp
- Page 54 and 55: paniculatepapillapappuspedicelpedun
- Page 56 and 57: simplesinuatesinussolitaryspathespa
- Page 58 and 59: valveveinvenationverticillatevesicl
- Page 60 and 61: Broadhurst, L.M. & Tan, B.H. (1995)
- Page 62 and 63: Erickson, R. & Willis, J.H. (1966).
- Page 64 and 65: Keighery, G.J. (1982). Macarthuria
- Page 66 and 67: Napier, A.C., Taylor, A. & Hopper,
- Page 68: Weston, P. (1994). The Western Aust