Teucrium corymbosum
{{Short description|Species of flowering plant}}
{{Use dmy dates|date=July 2019}}
{{Speciesbox
|name = Forest germander
|image= Teucrium corymbosum 1520.jpg
|image_caption = Teucrium corymbosum at Marysville
|genus = Teucrium
|species = corymbosum
|authority = R.Br.{{cite web|title=Teucrium corymbosum|url= https://biodiversity.org.au/nsl/services/apc-format/display/74296|publisher=Australian Plant Census|access-date=6 March 2021}}
|synonyms =
- Anisomeles australis Spreng.
- Scoparia australis Sieber ex Schult. & Schult.f.
- Teucrium australe Spreng. nom. inval., pro syn.
- Teucrium corymbosum R.Br. var. corymbosum
- Teucrium corymbosum var. typicum Domin nom. inval.
}}
Teucrium corymbosum, commonly known as forest germander,{{cite web |last1=Conn |first1=Barry J. |title=Teucrium corymbosum |url=https://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=sp&name=Teucrium~corymbosum |publisher=Royal Botanic Garden Sydney |access-date=6 March 2021}} is a species of flowering plant in the family Lamiaceae and is native to Australia and New Guinea. It is a perennial herb or subshrub densely covered with glands and with narrow egg-shaped leaves usually with toothed edges, and groups of mostly up to ten white flowers.
Description
Teucrium corymbosum is a perennial herb or subshrub that typically grows to a height of up to {{cvt|1.5|m}}. Its stems are square in cross-section and densely covered with greyish hairs and sessile glands. The leaves are narrow egg-shaped to lance-shaped, {{cvt|20–110|mm}} long and {{cvt|6–20|mm}} wide on a petiole up to {{cvt|14|mm}} long. The edges of the leaves are toothed, (except in the Warrumbungles form) and the lower surface is hairy. The flowers are borne in clusters of between five and ten in leaf axils, each flower on a pedicel {{cvt|3–10|mm}} long. The sepals are {{cvt|3–5|mm}} long, joined at their lower half, with sessile glands and hairs on the outside. The petals are white, {{cvt|8–12|mm}} long, the lowest lobe {{cvt|8–9|mm}} long. Flowering occurs from August to April and the fruit is a schizocarp about {{cvt|3|mm}} long.{{cite web |last1=Conn |first1=Barry J. |title=Teucrium corymbosum |url=https://vicflora.rbg.vic.gov.au/flora/taxon/8c7ae4f7-9651-4862-8a72-3bcbecb50065 |publisher=Royal Botanic Gardens Victoria |access-date=6 March 2021}}{{cite web |title=Teucrium corymbosum |url=http://www.flora.sa.gov.au/cgi-bin/speciesfacts_display.cgi?form=speciesfacts&name=Teucrium_corymbosum |publisher=State Herbarium of South Australia |access-date=6 March 2021}}{{cite web |title=Teucrium corymbosum |url=https://dpipwe.tas.gov.au/Documents/Teucrium-corymbosum.pdf |publisher=Tasmanian Government Department of Primary Industries, Parks, Water and Environment |access-date=6 March 2021}}
Taxonomy
Teucrium corymbosum was formally described in 1810 by botanist Robert Brown in Prodromus Florae Novae Hollandiae.{{cite web|title=Teucrium corymbosum|url= http://id.biodiversity.org.au/instance/apni/486811|publisher=APNI|accessdate=4 March 2021}}{{cite book |last1=Brown |first1=Robert |title=Prodromus Florae Novae Hollandiae |date=1810 |location=London |page=504 |url=https://www.biodiversitylibrary.org/item/21871#page/372/mode/1up |access-date=6 March 2021}}
Distribution and habitat
Forest germander grows in forest, dry creek beds, shaded and partially cleared areas, often on rocky ground. It occurs in New Guinea, Queensland, eastern New South Wales, Victoria and Tasmania, and in south-eastern South Australia.{{cite web |title=Teucrium corymbosum |url=https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:460345-1 |publisher=Plants of the World Online |access-date=6 March 2021}}
Conservation status
The species is listed as rare in Tasmania under the Threatened Species Protection Act 1995.