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Classification System: APG IV

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

Familia: Aizoaceae
Subfamilia: Ruschioideae
Tribus: Ruschieae
Genus: Trichodiadema
Species: T. attonsum – T. aureum – T. barbatum – T. bulbosum – T. burgeri – T. calvatum – T. concinnum – T. decorum – T. densum – T. emarginatum – T. fergusoniae – T. fourcadei – T. gracile – T. hallii – T. hirsutum – T. imitans – T. intonsum – T. introrsum – T. littlewoodii – T. marlothii – T. mirabile – T. obliquum – T. occidentale – T. olivaceum – T. orientale – T. peersii – T. pomeridianum – T. pygmaeum – T. rogersiae – T. rupicola – T. ryderae – T. setuliferum – T. stayneri – T. strumosum
Source(s) of checklist:
Name

Trichodiadema Schwantes, 1926.

Type species: Trichodiadema stelligerum (Haw.) Schwantes. Lectotype designated by: Schwantes, M. H. G. G. 1926. ?. Z. Sukkulentenk. 2: 187.

References

Schwantes, M.H.G., 1926: Zeitschrift für Sukkulentenkunde. Berlin, ii. 187.

Links

Hassler, M. 2018. Trichodiadema. 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. 2018. Species 2000 & ITIS Catalogue of Life. Published on the internet. Accessed: 2018 Jul. 14. Reference page.
International Plant Names Index. 2018. Trichodiadema. Published online. Accessed: Jul. 14 2018.
The Plant List 2013. Trichodiadema in The Plant List Version 1.1. Published on the internet. Accessed: 2018 Jul. 14.
Tropicos.org 2018. Trichodiadema. Missouri Botanical Garden. Published on the internet. Accessed: 2018 Jul. 14.
Global Biodiversity Information Facility. 2019. GBIF Backbone Taxonomy. Checklist dataset. Taxon: Trichodiadema. .

Vernacular names
English: Desert Roses

Trichodiadema is a genus of succulent plants of the family Aizoaceae.

The name "Trichodiadema" comes from the ancient Greek "τρῐχός" (=hair, bristle) and "διαδεμα" (=crown)

They come from Cape Province in South Africa.

Description

Trichodiadema are small, short-stemmed succulents with small, elongated, alternating sections measuring 8 mm long. They are grey and green.

At the apex of each alternating section is a ring of small bristles radiating around the center, that give the appearance of a cactus areola.

The flowers look like daisies, with red, pink or white petals, earning them the nickname "Desert Rose". Two species however, Trichodiadema aureum and Trichodiadema introrsum, have flowers that are yellow.
Cultivation

The plant requires sun exposure (although not too intense), and well-drained soil.

Propagation is by division of the clumps. Propagation by cuttings is difficult, because of the risk of rot.

Trichodiademum densum has gained the Royal Horticultural Society's Award of Garden Merit.[1][2]
List of species
Trichodiadema densum
The flower

Trichodiadema attonsum Schwantes
Trichodiadema aureum L.Bolus
Trichodiadema barbatum Schwantes
Trichodiadema bulbosum Schwantes
Trichodiadema burgeri L.Bolus
Trichodiadema calvatum L.Bolus
Trichodiadema concinnum L.Bolus
Trichodiadema densum[3] Schwantes
Trichodiadema echinatum L.Bolus
Trichodiadema emarginatum L.Bolus
Trichodiadema fergusoniae L.Bolus
Trichodiadema fourcadei L.Bolus
Trichodiadema gracile L.Bolus
Trichodiadema hallii L.Bolus
Trichodiadema hirsutum (Haw.) Stearn
Trichodiadema imitans L.Bolus
Trichodiadema inornatum L.Bolus
Trichodiadema intonsum Schwantes
Trichodiadema introrsum (Hook. f.) Niesler
Trichodiadema littlewoodii L.Bolus

Trichodiadema marlothii L.Bolus
Trichodiadema mirabile Schwantes
Trichodiadema obliquum L.Bolus
Trichodiadema occidentale L.Bolus
Trichodiadema olivaceum L.Bolus
Trichodiadema orientale L.Bolus
Trichodiadema peersii L.Bolus
Trichodiadema pomeridianum L.Bolus
Trichodiadema pygmaeum L.Bolus
Trichodiadema rogersiae L.Bolus
Trichodiadema rupicola L.Bolus
Trichodiadema ryderae L.Bolus
Trichodiadema schimperi (Engl.) A.G.J.Herre
Trichodiadema setuliferum Schwantes
Trichodiadema stayneri L.Bolus
Trichodiadema stellatum Schwantes
Trichodiadema stelligerum Schwantes
Trichodiadema strumosum L.Bolus
Trichodiadema tenue L.Bolus

Notes and references

"Trichodiadema densum". Royal Horticultural Society. Retrieved 23 July 2013.
"AGM Plants - Ornamental" (PDF). Royal Horticultural Society. July 2017. p. 102. Retrieved 24 December 2018.
: the most known sprecies. Stems lie on the ground. Silks are longer than those of other species.

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