Senecio pokohinuensis, also known as the Mokohinau groundsel,[2] is a species of flowering plant in the family Asteraceae. The plant was first described as a subspecies of Senecio repangae in 1998, and elevated to species status in 2022. It is endemic to the Mokohinau Islands of the Auckland Region, New Zealand.
| Senecio pokohinuensis | |
|---|---|
| |
| Senecio pokohinuensis growing wild near the Mokohinau Islands Lighthouse | |
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Genus: | Senecio |
| Species: | S. pokohinuensis
|
| Binomial name | |
| Senecio pokohinuensis (de Lange & B.G.Murray) de Lange
| |
| Synonyms | |
| |
Taxonomy
editSenecio pokohinuensis was first described as a subspecies of Senecio repangae by Peter de Lange and Brian Grant Murray in 1998.[3] The holotype of the species was collected in 1993 by de Lange from Burgess Island in the Mokohinau Islands group, and was found in short grass on a cliffside.[3]
In 2022, de Lange elevated S. pokohinuensis to species level, due to genetic evidence showing that S. repangae and S. pokohinuensis had distinct origins. Both species were hybrids between the Lautusoid and Disciform groups within Senecio, however the hybridisation events were different, and likely involved different species.[4]
Description
editS. pokohinuensis is an annual or perennial herb that rises to a height of 0.2–1.2 m (7.9 in – 3 ft 11.2 in). The plant is a dull green, with yellow flowers.[2] The species can be distinguished from Senecio repangae due to differing leaf surfaces, by having shorter capitula bracts, and because the ray florets of S. pokohinuensis are evenly spaced and not recurved.[3] The species epithet comes from the Ngāti Rehua name for Burgess Island, Pokohinu.[3]
Distribution and habitat
editThe species is endemic to the Mokohinau Islands in the Auckland Region of New Zealand.[4][5] S. pokohinuensis is one of the few plants endemic to the Auckland Region.[6] The plant is commonly found in association with petrel breeding grounds.[4]
Gallery
edit-
Holotype from the herbarium of the Auckland War Memorial Museum -
The species is endemic to the Mokohinau Islands
.jpg)
References
edit- ^ "Senecio pokohinuensis (de Lange & B.G.Murray) de Lange". New Zealand Threat Classification System. Retrieved 12 September 2024.
- ^ a b "Senecio pokohinuensis". New Zealand Plant Conservation Network. Retrieved 11 September 2024.
- ^ a b c d de Lang, P. J.; Murray, B. G. (December 1998). "Senecio repangae (Asteraceae): A new endemic species from the north‐eastern North Island, New Zealand". New Zealand Journal of Botany. 36 (4): 509–519. doi:10.1080/0028825X.1998.9512591. ISSN 0028-825X. Wikidata Q54685756.
- ^ a b c de Lange, Peter J.; Pelser, Pieter B.; Liew, Chia-Sin; Marshall, Andrew J. (27 June 2022). "Senecio pokohinuensis (Asteraceae), a new combination for an endemic species of Mokohinau Islands, Hauraki Gulf (Tikapa Moana o Hauraki), northern Te Ika a Maui / North Island, Aotearoa / New Zealand". Ukrainian Botanical Journal. 79 (3): 125–129. doi:10.15407/UKRBOTJ79.125. ISSN 0372-4123. Wikidata Q130282567.
- ^ "Senecio pokohinuensis". Global Biodiversity Information Facility. Retrieved 12 September 2024.
- ^ Simpkins, Emma; Woolly, Jacinda; de Lange, Peter; Kilgour, Cameron; Cameron, Ewen; Melzer, Sabine (December 2022). Conservation Status of Vascular Plant Species in Tāmaki Makaurau / Auckland (PDF) (Report). Retrieved 11 September 2024.
External links
edit- Type specimens from the herbarium of Auckland War Memorial Museum