Aeonium haworthii

Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Eudicots
Cladus: Core eudicots
Ordo: Saxifragales

Familia: Crassulaceae
Subfamilia: Sempervivoideae
Tribus: Aeonieae
Genus: Aeonium
Sectio: A. sect. Leuconium
Species: Aeonium haworthii
Name

Aeonium haworthii Salm-Dyck ex Webb & Berthel., Hist. Nat. Iles Canaries 3(2:1): 193. 1841.

Synonyms

Homotypic
Sempervivum haworthii Salm-Dyck, Hort. Dyck. 253. 1834, nom. inval.
Sempervivum haworthii (Webb & Berthel.) Christ, Bot. Jahrb. 9: 118. 1888.

Hybrids

A. hawbicum – A. lambii – A. rowleyi – A. tenensis – A. teneriffae – A. × mascaense
Distribution
Native distribution areas:

Continental: Africa
Regional: Macaronesia
Canary Isl. (Tenerife)

References: Brummitt, R.K. 2001. TDWG – World Geographical Scheme for Recording Plant Distributions, 2nd Edition
References
Primary references

Salm-Reifferscheidt-Dyck, J. zu, 1841. Histoire Naturelle des Iles Canaries 3(2,1):193.

Links

Hassler, M. 2019. Aeonium haworthii. World Plants: Synonymic Checklists of the Vascular Plants of the World In: Roskovh, Y., Abucay, L., Orrell, T., Nicolson, D., Bailly, N., Kirk, P., Bourgoin, T., DeWalt, R.E., Decock, W., De Wever, A., Nieukerken, E. van, Zarucchi, J. & Penev, L., eds. 2019. Species 2000 & ITIS Catalogue of Life. Published on the internet. Accessed: 2019 November 30. Reference page.
Govaerts, R. et al. 2019. Aeonium haworthii in Kew Science Plants of the World online. The Board of Trustees of the Royal Botanic Gardens, Kew. Published on the internet. Accessed: 2019 November 30. Reference page.
International Plant Names Index. 2019. Aeonium haworthii. Published online. Accessed: November 30 2019.
USDA, ARS, Germplasm Resources Information Network. Aeonium haworthii in the Germplasm Resources Information Network (GRIN), U.S. Department of Agriculture Agricultural Research Service. Accessed: 07-Oct-06.

Vernacular names
English: Haworths Aeonium
español: Bejeque tinerfeno
Aeonium haworthii, also known as Haworth's aeonium or pinwheel, is a species of succulent flowering plant in the family Crassulaceae. It is grown as a houseplant in temperate regions. It has gained the Royal Horticultural Society's Award of Garden Merit,[2] as has the cultivar ‘Variegatum’.[3]

Distribution

A. haworthii is native to the Canary Islands and northern Africa, but it has been introduced to other areas of similar climate, such as Southern California.[4] In the US, it is suitable to be grown outside in USDA hardiness zones 9-11.[5] This species is drought tolerant and prefers full sun.[6] It is sometimes susceptible to aphids and mealybugs.[7] It is a sand-dwelling beach plant, a subshrub with rough, woody stems and rosettes of thick, red-edged green leaves which are triangular or diamond- or spade-shaped.[4]
Description
Inflorescence

It grows as a densely branched small shrub and reaches stature heights of up to 60 centimeters. The almost bare, somewhat mesh-like, ascending or hanging, winding shoots have a diameter of 3 to 6 millimeters. Their rather flat rosettes reach a diameter of 6 to 11 centimeters. The inner leaves are more or less upright. The obovate, green or yellowish green, often very heavily bluish, almost bare leaves are 3 to 5.5 centimeters long, 1.5 to 3 centimeters wide and 0.25 to 0.4 centimeters thick. They are pointed and trimmed towards the top. The base is wedge-shaped. The leaf margin is covered with curved eyelashes that are 0.4 to 0.8 millimeters long. The leaves are often reddish variegated along the edge.[8]

It has panicles of cream-colored pointed flowers produced in spring.[5] The loose, hemispherical inflorescence has a length of 6 to 16 centimeters and a width of 6 to 16 centimeters. The peduncle is 1 to 9 centimeters long. The seven-to nine-digit flowers are on a 2 to 12 millimeter long, bare flower stem. Its sepals are bald. The pale yellow to whitish, pink variegated, lanceolate, pointed petals are 7 to 9 millimeters long and 1.2 to 1.8 millimeters wide. The stamens are almost glabrous to sparsely weak downy.[9]
Cultivars

'Kiwi'[4]
'Variegatum'[3]
'Bicolor'[6]

References

The Plant List: A Working List of All Plant Species, retrieved 30 July 2016
"RHS Plant Selector - Aeonium haworthii". Retrieved 23 February 2020.
"Aeonium haworthii 'Variegatum'". Royal Horticultural Society. Retrieved 3 January 2018.
"Aeonium haworthii 'Kiwi'". BBC Gardeners' World Magazine. Retrieved 2021-04-07.
"Aeonium Haworthii Care: Growing Pinwheel Plants". Plant Care Today. 2019-06-01. Retrieved 2021-04-07.
"Kernock Park Plants Ltd Aeonium haworthii 'Bicolor'". www.kernock.co.uk. Retrieved 2021-04-07.
Ltd, GardensOnline Pty. "Aeonium haworthii | GardensOnline". www.gardensonline.com.au. Retrieved 2021-04-07.
Reto Nyffeler: Aeonium haworthii . In: Urs Eggli (ed.): Succulent plant dictionary. Crassulaceae (thick leaf family) . Eugen Ulmer, Stuttgart 2003, ISBN 3-8001-3998-7 , p. 17 .
RHS A-Z encyclopedia of garden plants. United Kingdom: Dorling Kindersley. 2008. p. 1136. ISBN 1405332964.