Roldana petasitis
Roldana petasitis, also known as the velvet groundsel or Californian geranium,[3] is a species of the genus Roldana and family Asteraceae that used to be classified in the genus Senecio. It is native to Central America.
Roldana petasitis | |
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Scientific classification ![]() | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Eudicots |
Clade: | Asterids |
Order: | Asterales |
Family: | Asteraceae |
Genus: | Roldana |
Species: | R. petasitis |
Binomial name | |
Roldana petasitis | |
Synonyms[1][2] | |
Senecio petasitis (Sims) DC. |
Description
![](../I/Senecio_petasites_02_ies.jpg.webp)
Preferring constant heat and thriving in sheltered gardens, it is an evergreen subshrub with weak stems. Growing up to 1.8 m tall, it features large softly hairy, venated, palmate leaves that are 20 cm long and wide at most, with seven or more broad, blunt lobes.[4]
Varieties
'Roldana p. var. cristobalensis' is a variety of this plant which features leaves with purple undersides.[5][6] 'Roldana petasitis var. oaxacana' and 'sartorii' are other varieties.[7][8]
Distribution
The plant is native to the subtropical highlands (Sierra Madre del Sur) of Oaxaca in Mexico, south to the tropics in El Salvador, Guatemala and Nicaragua.[9][10]
Climatically, it is found in the tropical savanna climates grading into the drier semi-arid or temperate wet/dry areas, where it is present from Veracruz in the north to Nicaragua in the south, in both pine-oak and mountain cloud forests between 1,000m and 2,500m. The 'cristobalensis' variety is found in Chiapas, the southernmost Mexican state, and in Guatemala between elevations 1,000m and 1,600m.[11] It is naturalized in parts of southeastern Australia and New Zealand.[12]
Gallery
- Bunch of flowers
- Bushy habit
- Leaves
- Sprawling habit
- Pollination
- In a forest
- Leaves with purple shades
References
- Natural Resources Conservation Service (NRCS). "PLANTS Profile, Roldana petasitis". The PLANTS Database. United States Department of Agriculture. Retrieved 2008-05-23.
- "Roldana petasitis". Germplasm Resources Information Network. Agricultural Research Service, United States Department of Agriculture. Retrieved 2008-05-23.
- Velvet Groundsel Better Homes & Gardens. Retrieved 28 March 2023.
- Roldana petasitis (Sims) H.Rob. & Brettell PlantNET. Retrieved 22 August 2023.
- Roldana petasitis var. cristobalensis (Greenm.) FunstonBoard of Trustees of the Royal Botanic Gardens, Kew Retrieved 12 April 2023.
- Senecio cristobalensis syn. Roldana petasitis var. cristobalensis Special Plants.net by Derry Watkins. Retrieved 12 April 2023.
- Roldana petasitis var. oaxacana (Hemsl.) Funston Board of Trustees of the Royal Botanic Gardens, Kew Retrieved 12 April 2023.
- Roldana petasitis var. sartorii (Sch.Bip. ex Hemsl.) Funston Board of Trustees of the Royal Botanic Gardens, Kew Retrieved 12 April 2023.
- Steven Foster's Images of Senecio petasitis, Roldana petasitis, Velvet Grounsel, California geranium Steven Foster Photography
- Taxonomic Revision of Roldana (Asteraceae: Senecioneae), a Genus of the Southwestern U.S.A., Mexico, and Central America1 Annals of the Missouri Botanical Garden by A. Michele Funston. January 2009. Retrieved 25 July 2023.
- Roldana cristobalensis (formerly Senecio cristobalensis…now, Roldana petasitis var. cristobalensis) GardenRiots Horticultural Forays Into a Changing Urban World
- Roldana petasitis (Sims) H. Rob. & Brettell Environmental Weeds of Australia.
External links
Media related to Roldana petasitis at Wikimedia Commons