Crassothonna clavifolia
| Crassothonna clavifolia | |
|---|---|
| |
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Genus: | Crassothonna |
| Species: | C. clavifolia
|
| Binomial name | |
| Crassothonna clavifolia (Marloth) B.Nord.
| |
Crassothonna clavifolia (previously Othonna clavifolia) is a species of flowering plant in the family Asteraceae. It is found only in Namibia. Its natural habitat is rocky areas. It is threatened by habitat loss.
Description
[edit]This species is a low-growing succulent with grey, trailing branches and squat, cylindrical or barrel-like leaves.[2] The yellow, daisy-like flowers grow on long stalks.[2] The specific epithet, clavifolia, is from the Latin words clava meaning a club and folia meaning leaves, referring to the club-shape of the leaves.
Taxonomy
[edit]This species was described by Hermann Wilhelm Rudolf Marloth in 1910[3] as Othonna clavifolia, however, the genus was changed from Othonna by Nordenstam et al., who erected the new genus Crassothonna for a distinct clade of Othonna species.[4] The new name for this species is therefore Crassothonna clavifolia (Marloth) B.Nord.
Distribution and habitat
[edit]This species is found from the northwest of the Richtersveld where the sandveld meets the Gariep River towards the southern Namibian coast.[2] This succulent is found in sandy deserts sometimes growing among rocks.[2]
Threats and cultivation
[edit]The species was classified in 2004 by the IUCN as Least Concern,[1] although recent concern has been expressed about commercial looting of this plant as part of the succulent plant market.[5][6]
References
[edit]- ^ a b Craven, P. (2004-04-30). "Crassothonna clavifolia". IUCN Red List of Threatened Species. Retrieved 2023-04-01.
- ^ a b c d Latti, Ivan. "Crassothonna clavifolia". Operation Wildflower. Retrieved 2021-04-30.
- ^ Marloth, R. (January 1910). "SOME NEW SOUTH AFRICAN SUCCULENTS. Part III". Transactions of the Royal Society of South Africa. 2 (1): 33–39. doi:10.1080/00359191009519359. ISSN 0035-919X.
- ^ Nordenstam, Bertil (2012). "Crassothonna B. Nord., a new African genus of succulent Compositae-Senecioneae". Compositae Newsletter. 50: 70–77.
- ^ Frandsen, Robin (2017). Succulents of Southern Africa. Johannesburg, South Africa: Honeyguide Publications. ISBN 9780620749558.
- ^ Grenier, Florent (2019). Secrets of Namaqualand Succulents. self-published. ISBN 9791069933095.