Prostanthera chlorantha

{{Short description|Species of flowering plant}}

{{Use dmy dates|date=August 2020}}

{{Speciesbox

| name = Green mintbush

| image =

| image_caption =

| genus = Prostanthera

| species = chlorantha

| authority = (F.Muell.) F.Muell. ex Benth.{{cite web|title=Prostanthera chlorantha|url= https://biodiversity.org.au/nsl/services/apc-format/display/109406|publisher=Australian Plant Census|access-date=26 August 2020}}

| range_map = Prostanthera chloranthaDistA16.png

| range_map_caption = Occurrence data from AVH

}}

Prostanthera chlorantha, commonly known as green mintbush,{{cite web |title=Prostanthera chlorantha (Labiatae) Green Mintbush |url=https://spapps.environment.sa.gov.au/SeedsOfSA/speciesinformation.html?rid=3540 |publisher=South Australian Seed Conservation Service |access-date=26 August 2020}} is a species of flowering plant in the family Lamiaceae and is endemic to the south-east of South Australia. It is a small shrub with small, broadly egg-shaped to round leaves and mauve, bluish green, or greenish red to greenish yellow flowers with a pink tinge.

Description

Prostanthera chlorantha is a shrub that typically grows to a height of {{cvt|0.5|m}} with more or less cylindrical stems. The leaves are broadly egg-shaped to more or less round, {{cvt|1–3|mm}} long, {{cvt|1–2.5|mm}} wide and sessile. The flowers are arranged on pedicels {{cvt|5–13|mm}} long and the sepals are green, often with reddish-purple streaks, {{cvt|8–12|mm}} long forming a tube {{cvt|5–6|mm}} long with two lobes {{cvt|3–6|mm}} long and {{cvt|2–4|mm}} wide. The petals are {{cvt|15–25|mm}}, mauve, bluish green, or greenish red to greenish yellow with a pink tinge, and fused to form a tube {{cvt|10–25|mm}} long. The lower lip has three lobes, the centre lobe {{cvt|2–5|mm}} long and about {{cvt|2|mm}} wide and the side lobes are {{cvt|4–5|mm}} long and about {{cvt|2|mm}} wide. The upper lip has is broadly egg-shaped to round {{cvt|5-10|mm}} long and {{cvt|10|mm}} wide with a small notch in the centre.{{cite journal |last1=Conn |first1=Barry J. |title=A taxonomic revision of Prostanthera Labill. Section Klanderia (F.v.Muell.) Benth. (Labiatae). |journal=Journal of the Adelaide Botanic Gardens |date=1984 |volume=6 |issue=3 |pages=289–292 |url=https://data.environment.sa.gov.au/Content/Publications/JABG06P207_Conn.pdf |access-date=27 August 2020}}{{cite web |title=Prostanthera chlorantha |url=http://www.flora.sa.gov.au/cgi-bin/speciesfacts_display.cgi?form=speciesfacts&name=Prostanthera_chlorantha |publisher=State Herbarium of South Australia |access-date=26 August 2020}}

Taxonomy

Green mintbush was first formally described in 1853 by Ferdinand von Mueller who gave it the name Klanderia chlorantha in the journal Linnaea.{{cite web|title=Klanderia chlorantha|url= https://id.biodiversity.org.au/instance/apni/481206|publisher=APNI|access-date=26 August 2020}}{{cite journal |last1=von Mueller |first1=Ferdinand |title=Diagnoses et descriptiones plantarum novarum, quas in Nova Hollandia. |journal=Linnaea: Ein Journal für die Botanik in ihrem ganzen Umfange, oder Beiträge zur Pflanzenkunde |date=1853 |volume=25 |page=426 |url=https://www.biodiversitylibrary.org/item/109556#page/432/mode/1up |access-date=27 August 2020}} In 1870 Mueller changed the name to Prostanthera chlorantha and the change was published by George Bentham in Flora Australiensis.{{cite web|title=Prostanthera chlorantha|url= https://id.biodiversity.org.au/instance/apni/701833|publisher=APNI|access-date=26 August 2020}}{{cite book |last1=Bentham |first1=George |last2=von Mueller |first2=Ferdinand |title=Flora Australiensis |date=1870 |publisher=Lovell Reeve & Co. |location=London |page=108 |url=https://www.biodiversitylibrary.org/page/26124467#page/120/mode/1up |access-date=27 August 2020}}

Distribution and habitat

Prostanthera chlorantha grows in scattered populations in mallee and shrubland in the south-east of South Australia.

References