Pimelea cremnophila  |  

Pimelea cremnophila

Status: Critically Endangered on the EPBC Act list

The NSW Scientific Committee (2017) state that Pimelea cremnophila is an Òerect shrub to 2.5 m
high. Stems red-brown, hirsute with strigose white antrorse hairs to 3 mm long, glabrescent with
age. Leaves opposite, petiolate. Petioles 1 mm long, densely hairy; lamina narrow-elliptic to narrowovate, acute, 10Ð37 mm long, 2.5Ð6 mm wide, abaxial surface hirsute with scattered white strigose
hairs, the hairs denser and longer toward the margins. Inflorescence axillary or terminal, 1Ð4
flowered; peduncle c. 1 mm long, strigose; bracts leaf-like. Flowers functionally male, bisexual or
functionally female, subsessile. Male flowers with hypanthium 6Ð8 mm long; sepals 3Ð4 mm long;
stamens 2, rarely 3; anthers narrow-oblong. Bisexual flowers protandrous with hypanthium 4Ð6.5
mm long; sepals 3Ð4 mm long, stamens similar to male flowers; ovary c. 1.5 mm long, with erect
hairs at apex; style eventually exserted; stigma brushlike. Female flowers with hypanthium 3Ð4.5
mm long; sepals 1.5Ð2.5 mm long; staminodes minute; gynoecium similar to bisexual flowers. Fruit
dry ovoid, enclosed in the persistent base of the hypanthium, pale green. Seeds ovoid 3Ð3.5 mm
long with minute longitudinal, foveate furrows, red brown (Copeland and Telford 2006)Ó.

Government evidence of impact of climate change:

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  • Australian Government, Conservation Advice, Pimelea cremnophila

    The forecast increase in the frequency and intensity of drought associated with anthropogenic climate change may therefore be a threat to this species.

    An increase in the frequency and intensity of extreme drought caused by climate change is considered to be a threat to the species (NSW Scientific Committee 2017).

    An increase in the frequency and intensity of extreme drought caused by climate change is considered to be a threat to the species (NSW Scientific Committee 2017).

    The main reasons for this species being eligible are i) the species has a very restricted geographic range; both the extent of occurrence (EOO) and area of occupancy (AOO) are 4 km ii) there is a very small population size (fewer than 100 mature individuals) and possibly only a single population remains and iii) a continuing decline is observed in the number of populations and the number of mature individuals due to grazing by goats; extreme droughts and inappropriate fire regime.

    Threats The NSW Scientific Committee (2017) state that Threats to Pimelea cremnophila include grazing by feral goats; extreme drought conditions and inappropriate fire regimes (Copeland and Telford 2006).

    Grazing by goats; extreme drought conditions and inappropriate fire regimes may have contributed to any decline.

    Based on direct observations; a potential decline of the population has occurred in the past decade and the causes of the decline (grazing by goats; extreme drought and inappropriate fire regime) may have not ceased.

    Threats The NSW Scientific Committee (2017) state that Threats to Pimelea cremnophila include grazing by feral goats; extreme drought conditions and inappropriate fire regimes (Copeland and Telford 2006).

    Mortality of mature individuals was also observed during 2002 2003; potentially correlated with extreme drought during this period (Copeland and Telford 2006).

    Grazing by goats; extreme drought conditions and inappropriate fire regimes may have contributed to any decline.

    This species occurs on shallow skeletal loam soils; and alteration of vegetation caused by goats represents an increased risk during extreme drought events.

    Based on direct observations; a potential decline of the population has occurred in the past decade and the causes of the decline (grazing by goats; extreme drought and inappropriate fire regime) may have not ceased.