Biology:Scapisenecio
| Scapisenecio | |
|---|---|
Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Subfamily: | Asteroideae |
| Tribe: | Senecioneae |
| Genus: | Scapisenecio Schmidt-Leb.[1] |
| Species | |
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See text. | |
Scapisenecio is a genus of flowering plant in the family Asteraceae, native to south-eastern Australia , particularly Tasmania.[2] The genus was established in 2020.[1]
Description
Species of Scapisenecio are rhizomatous or stoloniferous herbaceous plants. Their fully developed leaves are located close to the base of the plant, often in a rosette. The flowering heads are borne on stems with smaller leaves, usually one flower head per stem. The ray florets are yellow or more rarely white.[3]
Taxonomy
The genus Scapisenecio was established in 2020. A molecular phylogenetic study of Australian species placed in the tribe Senecioneae found that five species then placed in Senecio formed a clade that was clearly distinct from other Senecio species, genetically, morphologically, and in their distribution and ecology. Accordingly, a new genus was erected to include these five Australian species. The genus name refers to the growth habit in which the flower heads are borne on stems with reduced leaves (scapes).[3]
Species
(As of January 2023), Plants of the World Online accepted the following species:[2]
- Scapisenecio albogilvus (I.Thomps.) Schmidt-Leb.
- Scapisenecio leptocarpus (DC.) Schmidt-Leb.
- Scapisenecio papillosus (F.Muell.) Schmidt-Leb.
- Scapisenecio pectinatus (DC.) Schmidt-Leb.
- Scapisenecio primulifolius (F.Muell.) Schmidt-Leb.
Distribution and habitat
All the species of Scapisenecio are native to Tasmania. S. pectinatus is also found on the Australian mainland in New South Wales and Victoria; the other species are endemic to Tasmania. They are all found in subalpine to alpine habitats.[3]
References
- ↑ 1.0 1.1 "Scapisenecio Schmidt-Leb.", The International Plant Names Index, http://www.ipni.org/ipni/idPlantNameSearch.do?id=77213365-1, retrieved 2023-03-28
- ↑ 2.0 2.1 "Scapisenecio Schmidt-Leb.", Plants of the World Online (Royal Botanic Gardens, Kew), http://www.plantsoftheworldonline.org/taxon/urn:lsid:ipni.org:names:77213365-1, retrieved 2023-03-28
- ↑ 3.0 3.1 3.2 Schmidt-Lebuhn, Alexander N.; Zeil-Rolfe, Isabel; Lepschi, Brendan; Gooden, Ben (2020), "Expansion of Lordhowea, and a new genus for scapose, alpine Australian species of Senecioneae (Asteraceae)", Taxon 69 (4): 756–777, doi:10.1002/tax.12321
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