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Argyroderma

Argyroderma

Argyroderma

46 species Aizoaceae

Morphological Summary

Argyroderma is a genus of highly specialized mesembs in the Aizoaceae family, characterised by plant bodies consisting of one or two pairs of very succulent, semicircular-in-section leaves in silver-grey to grey-green tones that precisely mimic the semi-translucent quartz pebbles among which they grow. The generic name derives from the Greek argyros (silver) and derma (skin), referencing the striking metallic colouration of the leaves. The flowers emerging from the central fissure are violet-pink, magenta, or white depending on the species, and represent some of the most intense floral colours in the family. The genus is strictly restricted to the quartz fields of the Western Cape Province, an ecosystem of exceptional endemic richness.

Distribution Endemic to the Western Cape Province of South Africa; concentrated in the southern Namaqualand region (Knersvlakte, Vanrhynsdorp, Vredendal)
Conservation No global assessment for the genus; most species have highly restricted distributions within the Knersvlakte quartz fields, an ecosystem threatened by agriculture and mining
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sort_by_alpha A–Z 46 Results
eco
DocumentedNamaqualandQuartz fields

Argyroderma amoenum Schwantes

Pleasant Argyroderma

Specimen ID RN-ARG-00006
Origin Sudáfrica (Namaqualand, Little Karoo)
Type Mesemb succulent (Aizoaceae)
eco
DocumentedNamaqualandQuartz fields

Argyroderma braunsii (Schwantes) Schwantes

Braun's Argyroderma

Specimen ID RN-ARG-00007
Origin Sudáfrica (Namaqualand)
Type Mesemb succulent (Aizoaceae)
eco
DocumentedNamaqualandQuartz fields

Argyroderma carinatum L.Bolus

Keeled Argyroderma

Specimen ID RN-ARG-00008
Origin Sudáfrica (Steinkopf, Namaqualand)
Type Mesemb succulent (Aizoaceae)
eco
DocumentedNamaqualandYellow flowers

Argyroderma citrinum L.Bolus

Lemon Argyroderma

Specimen ID RN-ARG-00009
Origin Sudáfrica (Namaqualand)
Type Mesemb succulent (Aizoaceae)
eco
DocumentedNamaqualandQuartz fields

Argyroderma concinnum Schwantes

Neat Argyroderma

Specimen ID RN-ARG-00010
Origin Sudáfrica (Namaqualand, Richtersveld)
Type Mesemb succulent (Aizoaceae)
eco
Living stoneUnique shape

Argyroderma crateriforme

Crater Argyroderma

Specimen ID RN-ARG-00043
Origin Sudáfrica (Namaqualand, Cabo Occidental)
Type cultivated species
Argyroderma crateriforme (L.Bolus) N.E.Br.
DocumentedNamaqualandQuartz fields

Argyroderma crateriforme (L.Bolus) N.E.Br.

Crater Argyroderma

Specimen ID RN-ARG-00011
Origin Sudáfrica (Namaqualand, Knersvlakte)
Type Mesemb succulent (Aizoaceae)
eco
Living stoneType species

Argyroderma delaetii

Baby's Bottom

Specimen ID RN-ARG-00035
Origin Sudáfrica (Namaqualand, Cabo Occidental)
Type cultivated species
eco
CultivarYellow flowers

Argyroderma delaetii 'Aureum'

Golden Argyroderma

Specimen ID RN-ARG-00036
Origin Cultivar seleccionado, Sudáfrica
Type cultivar
Argyroderma delaetii C.A.Maass
DocumentedCommonly cultivated

Argyroderma delaetii C.A.Maass

Split Rock / Silver Silverstone

Specimen ID RN-ARG-00001
Origin Campos de cuarzo costeros del noroeste de Namaqualand, Cabo Occidental, Sudáfrica
Type Coastal quartz fields; sandy soils over quartz gravel; winter-rainfall regime
eco
FormWhite flowers

Argyroderma delaetii f. alba

White-flowered Argyroderma

Specimen ID RN-ARG-00038
Origin Sudáfrica (Namaqualand)
Type form
eco
CrestedExtremely rare

Argyroderma delaetii f. cristata

Crested Argyroderma

Specimen ID RN-ARG-00045
Origin Mutación de cultivo
Type crested form
eco
FormLemon-yellow flowers

Argyroderma delaetii (forma citrino)

Lemon-flowered Argyroderma

Specimen ID RN-ARG-00039
Origin Sudáfrica (Namaqualand)
Type form
eco
FormPink flowers

Argyroderma delaetii f. roseum

Pink-flowered Argyroderma

Specimen ID RN-ARG-00037
Origin Sudáfrica (Namaqualand)
Type form
eco
DocumentedNamaqualandQuartz fields

Argyroderma digitifolium (N.E.Br.) Schwantes ex L.Bolus

Finger-leaved Argyroderma

Specimen ID RN-ARG-00012
Origin Sudáfrica (Namaqualand)
Type Mesemb succulent (Aizoaceae)
Argyroderma fissum (Haw.) L.Bolus
Documented

Argyroderma fissum (Haw.) L.Bolus

Cleft Silverstone / Split Silverstone

Specimen ID RN-ARG-00002
Origin De Vredendal a Vanrhynsdorp, Cabo Occidental, Sudáfrica
Type Loamy gravel flats adjacent to quartz fields; considered the most primitive species in the genus with finger-like leaves
eco
DocumentedRichtersveldQuartz fields

Argyroderma formosum L.Bolus

Beautiful Argyroderma

Specimen ID RN-ARG-00013
Origin Sudáfrica (Namaqualand, Richtersveld)
Type Mesemb succulent (Aizoaceae)
eco
Living stoneBranched

Argyroderma framesii

Frames' Argyroderma

Specimen ID RN-ARG-00042
Origin Sudáfrica (Namaqualand)
Type cultivated species
Argyroderma framesii L.Bolus
Documented

Argyroderma framesii L.Bolus

Frames's Silverstone / Hood Silverstone

Specimen ID RN-ARG-00003
Origin Knersvlakte y zonas adyacentes, Cabo Occidental, Sudáfrica
Type Quartz fields among rougher rocks; fast-draining arid soils with winter rainfall; two accepted subspecies
eco
DocumentedNamaqualandGregarious habit

Argyroderma gregarium L.Bolus

Gregarious Argyroderma

Specimen ID RN-ARG-00014
Origin Sudáfrica (Namaqualand)
Type Mesemb succulent (Aizoaceae)
eco
DocumentedLittle KarooWhite flowers

Argyroderma lesliei N.E.Br.

Leslie's Argyroderma

Specimen ID RN-ARG-00015
Origin Sudáfrica (Little Karoo, Calitzdorp)
Type Mesemb succulent (Aizoaceae)
eco
DocumentedFree StateQuartz fields

Argyroderma luckhoffii L.Bolus

Luckhoff's split rock

Specimen ID RN-ARG-00016
Origin Sudáfrica (Luckhoff, Free State)
Type Perennial mesemb succulent
eco
DocumentedNamaqualandQuartz fields

Argyroderma margaretae (Schwantes) N.E.Br.

Margareta's split rock

Specimen ID RN-ARG-00017
Origin Sudáfrica (Namaqualand, Bitterfontein)
Type Perennial mesemb succulent
eco
DocumentedNamaqualandQuartz fields

Argyroderma orientale L.Bolus

Eastern split rock

Specimen ID RN-ARG-00018
Origin Sudáfrica (Namaqualand, distribución oriental)
Type Perennial mesemb succulent
eco
DocumentedNamaqualandQuartz fields

Argyroderma ovale L.Bolus

Oval silver stone

Specimen ID RN-ARG-00019
Origin Sudáfrica (Namaqualand)
Type Perennial mesemb succulent
Argyroderma patens L.Bolus
DocumentedNamaqualandQuartz fields

Argyroderma patens L.Bolus

Open silver stone

Specimen ID RN-ARG-00020
Origin Sudáfrica (Namaqualand, Springbok)
Type Perennial mesemb succulent
eco
Living stone

Argyroderma pearsonii

Pearson's Argyroderma

Specimen ID RN-ARG-00041
Origin Sudáfrica (Namaqualand)
Type cultivated species
Argyroderma pearsonii (N.E.Br.) Schwantes
Documented

Argyroderma pearsonii (N.E.Br.) Schwantes

Pearson's Silverstone

Specimen ID RN-ARG-00004
Origin Knersvlakte central, cerca de Vanrhynsdorp, Cabo Occidental, Sudáfrica
Type Quartz patches in the central Knersvlakte; very restricted distribution; grows in association with other Argyroderma species
eco
DocumentedNamaqualandQuartz fields

Argyroderma planum L.Bolus

Flat silver stone

Specimen ID RN-ARG-00021
Origin Sudáfrica (Namaqualand)
Type Perennial mesemb succulent
eco
DocumentedLittle KarooQuartz fields

Argyroderma productum L.Bolus

Elongated silver stone

Specimen ID RN-ARG-00022
Origin Sudáfrica (Little Karoo, zona de Oudtshoorn)
Type Perennial mesemb succulent
eco
DocumentedNamaqualandQuartz fields

Argyroderma reniforme L.Bolus

Kidney-shaped silver stone

Specimen ID RN-ARG-00023
Origin Sudáfrica (Namaqualand)
Type Perennial mesemb succulent
Argyroderma ringens (N.E.Br.) Schwantes
DocumentedNamaqualandQuartz fields

Argyroderma ringens (N.E.Br.) Schwantes

Laughing silver stone

Specimen ID RN-ARG-00024
Origin Sudáfrica (Namaqualand, Bitterfontein)
Type Perennial mesemb succulent
eco
DocumentedNamaqualandQuartz fields

Argyroderma rooipanense L.Bolus

Rooipan split rock

Specimen ID RN-ARG-00025
Origin Sudáfrica (Rooipan, Namaqualand)
Type Perennial mesemb succulent
eco
DocumentedNamaqualandQuartz fields

Argyroderma roseatum N.E.Br.

Rosy-flowered argyroderma

Specimen ID RN-ARG-00026
Origin Sudáfrica (Namaqualand)
Type Perennial succulent
eco
Living stonePink flowers

Argyroderma roseum

Pink Argyroderma

Specimen ID RN-ARG-00044
Origin Sudáfrica (Namaqualand)
Type cultivated species
Argyroderma roseum (Haw.) Schwantes
DocumentedNamaqualandQuartz fields

Argyroderma roseum (Haw.) Schwantes

Rose-flowered argyroderma

Specimen ID RN-ARG-00027
Origin Sudáfrica (Namaqualand)
Type Perennial succulent
eco
DocumentedNamaqualandQuartz fields

Argyroderma schlechteri Schwantes

Schlecht's argyroderma

Specimen ID RN-ARG-00028
Origin Sudáfrica (Namaqualand)
Type Perennial succulent
eco
DocumentedNamaqualandQuartz fields

Argyroderma schuldtii Schwantes ex H.Jacobsen

Schuldt's argyroderma

Specimen ID RN-ARG-00029
Origin Sudáfrica (Namaqualand)
Type Perennial succulent
eco
DocumentedNamaqualandQuartz fields

Argyroderma socium (N.E.Br.) N.E.Br.

Colony-forming argyroderma

Specimen ID RN-ARG-00030
Origin Sudáfrica (Namaqualand)
Type Perennial succulent
eco
DocumentedNamaqualandQuartz fields

Argyroderma speciosum L.Bolus

Showy argyroderma

Specimen ID RN-ARG-00031
Origin Sudáfrica (Namaqualand)
Type Perennial succulent
eco
DocumentedNamaqualandQuartz fields

Argyroderma splendens L.Bolus

Splendid argyroderma

Specimen ID RN-ARG-00032
Origin Sudáfrica (Namaqualand)
Type Perennial succulent
eco
DocumentedNamaqualandQuartz fields

Argyroderma strictum L.Bolus

Strict argyroderma

Specimen ID RN-ARG-00033
Origin Sudáfrica (Namaqualand)
Type Perennial succulent
eco
DocumentedNamaqualandQuartz fields

Argyroderma subrotundum L.Bolus

Sub-rounded argyroderma

Specimen ID RN-ARG-00034
Origin Sudáfrica (Namaqualand)
Type Perennial succulent
eco
Living stoneEgg-shaped

Argyroderma testiculare

Egg Argyroderma

Specimen ID RN-ARG-00040
Origin Sudáfrica (Namaqualand)
Type cultivated species
Argyroderma testiculare (Aiton) N.E.Br.
DocumentedCommonly cultivated

Argyroderma testiculare (Aiton) N.E.Br.

Ball Silverstone / Living Stones

Specimen ID RN-ARG-00005
Origin Distrito de Vanrhynsdorp, Cabo Occidental, Sudáfrica
Type Quartz fields of the Vanrhynsdorp District; arid shrubland with quartz gravel soils and winter-rainfall regime
eco
Living stoneRarely cultivated

Argyroderma theartii

Theart's Argyroderma

Specimen ID RN-ARG-00046
Origin Sudáfrica (Cabo Occidental)
Type cultivated species

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