Origin and Habitat: Found in the northern parts of Namaqualand (Richtersveld to Kamieskroon), Namibia.
Habitat: It is found in the Succulent Karoo mostly on quartz flats, hills and stony ground, but also in granite.

• Cheiridopsis robusta (Haw.) N.E.Br.
• Mesembryanthemum robustum Haw.

• Cheiridopsis robusta (Haw.) N.E.Br.
• Mesembryanthemum robustum Haw.
• Cheiridopsis aurea L. Bolus
• Cheiridopsis aurea var. lutea L. Bolus
• Cheiridopsis brevipes L. Bolus
• Cheiridopsis brevis Schwantes
• Cheiridopsis brownii-robusta hort.
• Cheiridopsis grandiflora L. Bolus
• Cheiridopsis lecta (N.E.Br.) N.E.Br.
• Mesembryanthemum lectum N.E.Br.
• Cheiridopsis leptopetala L. Bolus
• Cheiridopsis multiseriata L. Bolus
• Cheiridopsis olivacea Schwantes
• Cheiridopsis perdecora N.E.Br.
• Cheiridopsis pressa (N.E.Br.) N.E.Br.
• Mesembryanthemum pressum N.E.Br.
• Cheiridopsis roodiae N.E.Br.
• Cheiridopsis schickiana Tischer
• Cheiridopsis truncata L. Bolus

Description: Cheiridopsis robustaSN|25335]]SN|25335]] is a low, clump-forming succulent plant and develops as mats. The plants name robusta pertains to its growth, robust. It is a widespread, extremely variable species that has received numerous unnecessary names.
stems: Very short, internodes not visible with only 2 or 4 leaves.
Leaves: Emerging from papery sleeves, up to 55 mm long and 17 mm wide, succulent, paired, connate only at the base and mostly free, tapering and vertically compressed. Lower surface keeled, upper surface flat, grey-green in colour. Apparently these plants are evergreen, as they always have their leaves. They renew their leaves annually, however, and also when rains fail to come, and the new pair of leaves is always formed at the cost of the water and biomass reserves in the old pair. Consequently, the new plant is smaller than the old one until it can take up sufficient water from the environment again and fully expand. The water content in the leaves of Cheiridopsis robustaSN|25335]]SN|25335]] continuously decreases during a period of drought.
Flowers: Diurnal, 60 mm in diameter, usually bright yellow, but also cream to salmon whit a paler centre.
Blooming season: Buds appear from winter to early spring (in its habitat June to September)

Bibliography: Major references and further lectures
1) Dieter J. Von Willert “Life strategies of succulents in deserts: with special reference to the Namib desert” CUP Archive, 1992
2) Peter Joyce “Flower Watching in the Cape: Scenic Routes Throughout the Year” Struik, 2004
3) James Cullen, Sabina G. Knees, H. Suzanne Cubey “The European Garden Flora Flowering Plants: A Manual for the Identification of Plants Cultivated in Europe, Both Out-of-Doors and Under Glass” Cambridge University Press, 11/Aug/2011

Cultivation and Propagation: The Cheiridopsis robustaSN|25335]]SN|25335]] is a "winter" grower which is most active from late winter until later spring and heading for summer dormancy, but in favourable growing conditions it keeps going over the summer too and doesn't need particular care.
Soil: Requires good drainage as it it is prone to root rot. It can grows outdoor in sunny, dry, rock crevices (protection against winter wet is required) It can also be cultivated in alpine house, in poor, drained soil.
Fertilization: It thrives in poor soils and seems sensitive to an excess of potassium.
Watering: Water minimally in summer, only when the plant starts shrivelling, water more abundantly when they are growing in the autumn and spring. Requires little water otherwise its epidermis breaks (resulting in unsightly scars).
Light: It needs a bright sunny or light shade exposure in winter, but keep cool and shaded in summer.
Hardiness: It prefer a very bright situation and will take a light frost (Hardy to -5°C) if it is in dry soil. USDA zones 9A – 11.
Uses: Container, rock garden.
Propagation: Seed in spring or cuttings. It is easily propagated by seed.