Goodenia dimorpha explained

Goodenia dimorpha is a species of flowering plant in the family Goodeniaceae and is endemic to the Sydney region. It is an erect herb with adventitious roots, linear to egg-shaped leaves, mostly at the base of the plant, and panicles of yellow flowers.

Description

Goodenis dimorpha is an erect, glabrous herb that typically grows to a height of and has adventitious roots. The leaves are mostly at the base of the plant, linear to egg-shaped with the narrower end towards the base, long and wide, sometimes with a few small teeth on the edges. The flowers are arranged in thyrse-like panicles up to long on a peduncle up to long with linear bracts at the base, each flower on a pedicel about long. The sepals are long, the corolla yellow, long. The lower lobes of the corolla are about long with wings about wide. The fruit is a narrow cylindrical to oval capsule long.^{[1] [2] [3]}

Taxonomy

Goodenia dimorpha was first formally described in 1904 by Joseph Maiden and Ernst Betche in the Proceedings of the Linnean Society of New South Wales. In 1990, Roger Charles Carolin selected the lectotype as material collected by Betche near Woodford in 1899.^{[4] [5] [6]}

In the same journal, Maiden and Betche described two varieties, and the names are accepted by the Australian Plant Census:

• Goodenia dimorpha var. angustifolia Maiden & Betche^[7] has linear leaves and mainly flowers from November to June;^{[8] [9]}
• Goodenia dimorpha Maiden & Betche var. dimorpha^[10] has egg-shaped leaves with the narrower end towards the base and mostly flowers from October to March.^{[11] [12]}

Distribution and habitat

This goodenia in swampy ground on sandstone plateaus. Variety angustifolia occurs from the Gosford district to Waterfall and var. dimorpha mainly near Blackheath in the Blue Mountains.

Notes and References

1. Web site: Carolin . Roger C. . Goodenia dimorpha . Australian Biological Resources Study, Department of Agriculture, Water and the Environment: Canberra . 17 January 2021.
2. Les Robinson – Field Guide to the Native Plants of Sydney, page 174
3. Web site: Carolin . Roger C. . Goodenia dimorpha . Royal Botanic Garden Sydney . 17 January 2021.
4. Carolin . Roger C. . Nomenclatural notes and new taxa in the genus Goodenia (Goodeniaceae) . Telopea . 1990 . 3 . 4 . 523 . 10.7751/telopea19904905 . 17 January 2021. free .
5. Web site: Goodenia dimorpha. APNI. 17 January 2021.
6. Maiden . Joseph H. . Betche . E. . Notes from the Botanic Gardens, Sydney. No. 9 . Proceedings of the Linnean Society of New South Wales . 1904 . 28 . 4 . 907–908 . 10.5962/bhl.part.26371 . 17 January 2021. free .
7. Web site: Goodenia dimorpha var. angustifolia. Australian Plant Census. 17 January 2021.
8. Web site: Carolin . Roger C. . Goodenia dimorpha var. angustifolia . Royal Botanic Garden Sydney . 17 January 2021.
9. Web site: Carolin . Roger C. . Goodenia dimorpha var. angustifolia . Australian Biological Resources Study, Department of Agriculture, Water and the Environment: Canberra . 17 January 2021.
10. Web site: Goodenia dimorpha var. dimorpha. Australian Plant Census. 17 January 2021.
11. Web site: Carolin . Roger C. . Goodenia dimorpha var. dimorpha . Royal Botanic Garden Sydney . 17 January 2021.
12. Web site: Carolin . Roger C. . Goodenia dimorpha var. dimorpha . Australian Biological Resources Study, Department of Agriculture, Water and the Environment: Canberra . 17 January 2021.