Small-flower Grevillea - profile

Indicative distribution


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Key:
known
predicted
The areas shown in pink and/purple are the sub-regions where the species or community is known or predicted to occur. They may not occur thoughout the sub-region but may be restricted to certain areas. ( click here to see geographic restrictions). The information presented in this map is only indicative and may contain errors and omissions.
Scientific name: Grevillea parviflora subsp. parviflora
Conservation status in NSW: Vulnerable
Commonwealth status: Vulnerable
Gazetted date: 12 Jun 1998
Profile last updated: 18 Jul 2013

Description

A low spreading to erect shrub, usually less than a metre high. It ahs erect narrow leaves are 2-3.5 mm long and less than 1.3mm wide, with silky hairs on the underside and a short pointed tip. Leaf margins are curved back, or even rolled completely under. The small flowers are spider-like and clustered in groups of 6-12. The whole flower, both tube and protruding style, is white, aging to pinkinsh-red, with rusty-brown hairs on the outside of the corolla.

Distribution

Sporadically distributed throughout the Sydney Basin with sizeable populations around Picton, Appin and Bargo (and possibly further south to the Moss Vale area) and in the Hunter at in the Cessnock - Kurri Kurri area (particularly Werakata NP). Separate populations are also known from Putty to Wyong and Lake Macquarie on the Central Coast.

Habitat and ecology

  • Grows in sandy or light clay soils usually over thin shales, often with lateritic ironstone gravels and nodules. Sydney region occurrences are usually on Tertiary sands and alluvium, and soils edrived from the Mittagong Formation. Soil landscapes include Lucas Heights or Berkshire Park.
  • Occurs in a range of vegetation types from heath and shrubby woodland to open forest. In Sydney it has been recorded from Shale Sandstone Transition Forest and in the Hunter in Kurri Sand Swamp Woodland. however, other communities occupied include Corymbia maculata - Angophora costata open forest in the Dooralong area, in Sydney Sandstone Ridgetop Woodland at Wedderburn and in Cooks River / Castlereagh Ironbark Forest at Kemps Creek.
  • Associated species in the Kurri Sand Swamp Woodland include Eucalyptus parramattensis subsp. decadens, Angophora bakeri and E. fibrosa with Acacia elongata, Dillwynia parvifolia, Melaleuca thymifolia, Grevillea montana, Eragrostis brownii and Aristida vagans. In the Shale Sandstone Transition Forest associated species include Eucalyptus fibrosa, E. punctata, Corymbia gummifera, Pultenaea scabra var. biloba, Kunzea ambigua, Allocasuarina littoralis and Themeda australis. At sites with a stronger sandstone influence Eucalytpus sclerophylla, E. piperita, E. oblonga, Grevillea diffusa, G. mucronulata, Acacia suaveolens and Persoonia pinifolia are found. Despite the range of associated communities several understorey species which are common to several of the known sites of Grevillea parviflora subsp. parviflora can be identified and include Allocasuarina littoralis, Daviesia ulicifolia, Kunzea ambigua, Banksia spinulosa, Leptospermum trinervium, Melaleuca nodosa, Pimelea linifolia, Themeda australis, Entolasia stricta and Eragrostis brownii.
  • G. parviflora subsp. parviflora has been recorded growing with several other threatened species including Acacia bynoeana (Heddon Greta), Dillwynia tenuifolia (Kemps Creek) and Persoonia bargoensis (S. of Appin and at Bargo).
  • Found over a range of altitudes from flat, low-lying areas to upper slopes and ridge crests. Hunter occurrences are usually 30-70m ASL, while the southern Sydney occurrences are typically at 200-300m ASL.
  • Often occurs in open, slightly disturbed sites such as along tracks.
  • Plants are capable of suckering from a rootstock and most populations demonstrate a degree of vegetative spread, particularly after disturbance such as fire. This can make counts of individual genets in a population very difficult, and stem counts are usually an acceptable means of assessment for management purposes.
  • Flowering has been recorded between July to December as well as April-May. Flowers are insect-pollinated and seed dispersal is limited. Seedling recruitment after fire is uncommon, and most recovery after disturbance appears to be gesprouting from rhizomes.
  • Competition from tick bush (Kunzea ambigua) can affect recruitment and recovery, including spread, following disturbance.

Regional distribution and habitat

Click on a region below to view detailed distribution, habitat and vegetation information.


Threats

Recovery strategies

Activities to assist this species

Information sources

CMA CMA sub-region Known or predicted Geographic restrictions region
Hawkesbury-NepeanCumberland Known None
Hunter-Central RiversHunter Known None
Hunter-Central RiversKaruah Manning Known None
Hunter-Central RiversWyong Known None
Sydney MetroCumberland Known None
Sydney MetroSydney Cataract Known None