Prostanthera petraea
{{Short description|Species of flowering plant}}
{{use dmy dates|date=October 2019}}
{{Speciesbox
|name =
|image = Prostanthera petraea.jpg
|image_caption =
|status =
|status_system =
|genus = Prostanthera
|species = petraea
|authority = B.J.Conn{{cite web|title=Prostanthera petraea|url= https://biodiversity.org.au/nsl/services/apc-format/display/154796|publisher=Australian Plant Census|access-date=15 September 2020}}
|range_map = Prostanthera petraeaDistA70.png
|range_map_caption = Occurrence data from AVH
}}
Prostanthera petraea is a species of flowering plant in the family Lamiaceae and is endemic to a restricted area near the Queensland–New South Wales border. It is a large shrub to small tree with ridged, glandular branches, egg-shaped leaves and white flowers usually without markings.
Description
Prostanthera petraea is a shrub or small tree that typically grows to a height of {{cvt|1–3|m}} and has branches with two longitudinal ridges. The leaves are dull olive-green above, much paler below, egg-shaped, {{cvt|40–70|mm}} long and {{cvt|12–26|mm}} wide on a petiole about {{cvt|5–12|mm}} long. The flowers are arranged in groups near the ends of branchlets with bracteoles {{cvt|2.5–3|mm}} long at the base, but that fall off as the flower develops. The sepals are light green and form a tube {{cvt|4.5–5|mm}} long with two lobes, the lower lobe {{cvt|3.5–4|mm}} long and the upper lobe {{cvt|2.5–3.3|mm}} long. The petals are white, usually without markings, {{cvt|8–12|mm}} long forming a tube {{cvt|5–6|mm}} long with two lips. The central lobe of the lower lip is {{cvt|5.5–7|mm}} long and {{cvt|4.5–5.5|mm}} wide and the side lobes are {{cvt|5–6|mm}} long and {{cvt|3–3.5|mm}} wide. The upper lip is {{cvt|4–5|mm}} long and {{cvt|10–12|mm}} wide with a central notch {{cvt|2–4|mm}} long. Flowering occurs from late spring to early summer.{{cite web |last1=Conn |first1=Barry J. |title=Prostanthera petraea |url=https://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=sp&name=Prostanthera~petraea |publisher=Royal Botanic Garden Sydney |access-date=16 September 2020}}{{cite journal|last1=Conn|first1=Barry J.|date=2006|title= New species of Prostanthera section Prostanthera (Labiatae) from New South Wales |journal=Telopea |volume=7 |issue=3 |pages=252–255|doi=10.7751/telopea20065725|doi-access=free}}
Taxonomy
Prostanthera petraea was first formally described in 2006 by Barry Conn in the journal Telopea from material collected in Bald Rock National Park in 1992.{{cite web|title=Prostanthera petraea|url= https://id.biodiversity.org.au/instance/apni/612417|publisher=APNI|access-date=16 September 2020}}
Distribution and habitat
This mint-bush grows in woodland amongst granite boulders in the Boonoo Boonoo - Bald Rock area in far south-east Queensland and the Northern Tablelands of north-eastern New South Wales.
Conservation status
Prostanthera petraea is classified as "near threatened" in Queensland under the Queensland Government Nature Conservation Act 1992.{{cite web |title=Species profile—Prostanthera petraea (Lamiaceae) |url=https://apps.des.qld.gov.au/species-search/details/?id=33746 |publisher=Queensland Government Department of Environment and Science |access-date=16 September 2020}}
References
{{Reflist}}
{{Taxonbar|from=Q15355284}}
Category:Flora of New South Wales
Category:Lamiales of Australia