Biology:Goodenia nigrescens
| Goodenia nigrescens | |
|---|---|
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Asterales |
| Family: | Goodeniaceae |
| Genus: | Goodenia |
| Species: | G. nigrescens
|
| Binomial name | |
| Goodenia nigrescens Carolin[1]
| |
Goodenia nigrescens is a species of flowering plant in the family Goodeniaceae and is endemic to northern Australia. It is an erect herb with narrow oblong to lance-shaped leaves on the stems and racemes of orange-yellow flowers.
Description
Goodenia nigrescens is an erect herb that typically grows to a height of 20 cm (7.9 in) and is more or less glaucous. The leaves are mostly scattered along the stems and are narrow oblong to lance-shaped with the narrower end towards the base and usually toothed or lobed, 20–50 mm (0.79–1.97 in) long and 3–5 mm (0.12–0.20 in) wide. The flowers are arranged in racemes up to 100 mm (3.9 in) long on a peduncle 5–12 mm (0.20–0.47 in) long, each flower on a pedicel 1–2 mm (0.039–0.079 in) long with leaf-like bracts and linear bracteoles 2–3 mm (0.079–0.118 in) long. The sepals are lance-shaped to elliptic, 4–5 mm (0.16–0.20 in) long, the petals orange-yellow and about 18 mm (0.71 in) long. The lower lobes of the corolla are about 7 mm (0.28 in) long with wings about 2.5–3 mm (0.098–0.118 in) wide. Flowering mainly occurs from May to August and the fruit is a compressed oval capsule 10–15 mm (0.39–0.59 in) long.[2][3]
Taxonomy and naming
Goodenia nigrescens was first formally described in 1990 Roger Charles Carolin in the journal Telopea from specimens collected in 1960 on Banka Banka Station by George Chippendale.[3][4] The specific epithet (nigrescens) means "becoming black", referring to the tendency of the plant to turn black when dried.[3]
Distribution and habitat
This goodenia grows in grey and black soils on the Barkly Tableland, and in Queensland.[2][5]
Conservation status
Goodenia nigrescens is classified as "data deficient" under the Northern Territory Government Territory Parks and Wildlife Conservation Act 1976 but as of "least concern" under the Queensland Government Nature Conservation Act 1992.[5][6]
References
- ↑ "Goodenia nigrescens". Australian Plant Census. https://biodiversity.org.au/nsl/services/apc-format/display/118421.
- ↑ 2.0 2.1 Carolin, Roger C.. "Goodenia nigrescens". Australian Biological Resources Study, Department of Agriculture, Water and the Environment: Canberra. https://profiles.ala.org.au/opus/foa/profile/Goodenia%20nigrescens.
- ↑ 3.0 3.1 3.2 Carolin, Roger C. (1980). "Nomenclatural notes and new taxa in the genus Goodenia (Goodeniaceae)". Telopea 3 (4): 542–543. https://www.biodiversitylibrary.org/item/265128#page/96/mode/1up. Retrieved 16 March 2021.
- ↑ "Goodenia nigrescens". APNI. http://id.biodiversity.org.au/instance/apni/552666.
- ↑ 5.0 5.1 "Goodenia nigrescens". Northern Territory Government. http://eflora.nt.gov.au/factsheet?id=2659.
- ↑ "Species profile—Goodenia nigrescens". Queensland Government Department of Environment and Science. https://apps.des.qld.gov.au/species-search/details/?id=9907.
Wikidata ☰ Q17480102 entry
 |  |
