| 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 | |
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.
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]
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]
This goodenia grows in grey and black soils on the Barkly Tableland, and in Queensland. [2] [5]
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]
Goodenia heterophylla is a species of plant in the family Goodeniaceae and is endemic to eastern Australia. It is an erect to trailing, more or less woody herb or shrub with linear to egg-shaped stem-leaves and racemes or thyrses of yellow flowers.
Goodenia byrnesii is a species of flowering plant in the family Goodeniaceae and is endemic to northern Australia. It is prostrate to low-lying herb with short-lived, lance-shaped leaves at the base, egg-shaped to oblong, toothed stem leaves, and leafy racemes of yellow flowers.
Goodenia campestris is a species of flowering plant in the family Goodeniaceae and is endemic to northern Australia. It is a low-lying herb with egg-shaped to lance-shaped stem leaves and racemes of yellowish flowers with purple veins.
Goodenia glareicola is a species of flowering plant in the family Goodeniaceae and is endemic to the south-west of Western Australia. It is an erect, perennial herb with linear to lance-shaped leaves, and racemes of blue flowers with purplish spots.
Goodenia holtzeana is a species of flowering plant in the family Goodeniaceae and is endemic to northern parts of the Northern Territory. It is a prostrate to ascending or erect annual plant with egg-shaped to lance-shaped stem-leaves with the narrower end towards the base, and racemes of yellow flowers with brownish markings.
Goodenia kakadu is a species of flowering plant in the family Goodeniaceae and is endemic to the Northern Territory. It is a prostrate herb with narrow oblong leaves in rosettes on stolons, and small dark red flowers arranged singly in leaf axils.
Goodenia larapinta is a species of flowering plant in the family Goodeniaceae and is endemic to the Northern Territory. It is an erect perennial herb with elliptic to lance-shaped stem-leaves and racemes of yellow flowers.
Goodenia macbarronii, commonly known as narrow goodenia, is a species of flowering plant in the family Goodeniaceae and is endemic to south-eastern Australia. It is an erect perennial herb with adventitious roots, toothed, lance-shaped leaves with the lower end towards the base, and racemes of yellow flowers.
Goodenia malvina is a species of flowering plant in the family Goodeniaceae and is endemic to north-western Australia. It is a prostrate to low-lying herb with egg-shaped to lance-shaped leaves on the stems and racemes of mauve to pinkish and yellowish flowers.
Goodenia megasepala is a species of flowering plant in the family Goodeniaceae and is endemic to Queensland. It is a prostrate to low-lying herb with toothed or lobed, lance-shaped to narrow elliptic leaves, and racemes of yellow flowers.
Goodenia muelleriana is a species of flowering plant in the family Goodeniaceae and is endemic to the north-west of Western Australia. It is an ascending to erect herb with elliptic to lance-shaped leaves at the base of the plant, and racemes of yellow flowers.
Goodenia neglecta is a species of flowering plant in the family Goodeniaceae and is endemic to the Northern Territory of Australia. It is an ascending, weak-stemmed herb with toothed, egg-shaped leaves and racemes of yellow flowers.
Goodenia ochracea is a species of flowering plant in the family Goodeniaceae and is endemic to the extreme west of Western Australia. It is a low-lying, stolon-forming herb with clusters of lance-shaped, toothed leaves at the base of the plant, and racemes of deep yellow flowers.
Goodenia pascua is a species of flowering plant in the family Goodeniaceae and is endemic to the north-west of Western Australia. It is an ascending to erect herb with bristly hairs, and with narrow elliptic to lance-shaped leaves at the base of the plant and racemes of yellow flowers.
Goodenia pilosa is a species of flowering plant in the family Goodeniaceae and is native to northern Australia and to parts of Asia. It is a prostrate to low-lying herb with erect hairs, narrow oblong to narrow elliptic leaves at the base of the plant and racemes of yellow flowers with a purplish base.
Goodenia porphyrea is a species of flowering plant in the family Goodeniaceae and is endemic to the northern parts of the Northern Territory. It is a low-lying to prostrate herb with stiff hairs, and with egg-shaped leaves at the base of the plant and racemes of purplish to apricot or brownish flowers.
Goodenia purpurea is a species of flowering plant in the family Goodeniaceae and is endemic to the Northern Territory. It is an ascending herb with narrow oblong to lance-shaped leaves at the base of the plant, and racemes of purple flowers.
Goodenia pusilliflora, commonly known as small-flower goodenia, is a species of flowering plant in the family Goodeniaceae and is endemic to drier parts of southern Australia. It is a low-lying to ascending herb with oblong to egg-shaped leaves with toothed or lyrate edges, and racemes of small yellow flowers.
Goodenia quadrifida is a species of flowering plant in the family Goodeniaceae and is endemic to a restricted part of the Northern Territory. It is an ascending herb with glabrous foliage, narrow oblong to lance-shaped leaves at the base of the plant and racemes of purplish-brown flowers.
Goodenia virgata is a species of flowering plant in the family Goodeniaceae and is endemic to the Tanami Desert in central Australia. It is an erect to ascending herb with more or less thick, linear to lance-shaped leaves with the narrower end towards the base, and racemes of yellow flowers.