All the information and photos in cactus art files are now available also in the new the Encyclopaedia of Succulents. We hope you find this new site informative and useful.

Lithops hookeri Abrahamsdam
The plant from this locality have colourful rusty red top.
 

Remarks: Lithops are partly subterranean, with only the clear 'window' in each leaf tip exposed above soil. A type of optical system exists whereby a layer of apical tissue rich in calcium oxalate crystals acts as a filter to intense sunlight before it reaches the thin chlorophyllous layer below. They are also called mimicry plants as they show a striking similarity to their background rocks and are difficult to detect when not in flower. These are the commonly known as pebble plants or living stones; each species is associated with one particular type of rock formation and occurs nowhere else. Its soil-embedded, subterranean growth form also reduces the need for chemical defences against herbivores.

◄LEFT: Springtime, new leaves are developing within the old leaf-pairs.

Cultivation: They need an open mineral, fast draining mix and the maximum amount of light you are able to give them. The basic cultivation routine is: Stop watering after flowering. Start watering after the old leaves are completely dry  (usually late March or Early April). Water freely during the growing season, soak the compost fully but allow it to dry out between waterings. Some growers fertilize frequently, some hardly ever. Keep them dry during the winter. Nearly all problems occur as a result of overwatering and poor ventilation, especially when weather conditions are dull and cool or very humid.
 

Photo of conspecific taxa, varieties, forms and cultivars of Lithops hookerii

• Lithops hookerii (Form Abrahamsdam)
• Lithops hookerii var. elephina C93
• Lithops hookerii var. lutea C38
• Lithops hookerii var. marginata "Cerise" C88
• Lithops hookerii var. subfenestrata "bruneoviolacea" C19

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Origin: South Africa Grows scattered in a large area in the Cape province

Habitat:  Lithops hookeri grows on different kind of stony ground comprising transluscent quartzite; amygdaloidal lava; amygdaloidal lava with some sandstone; sheared micaceous quartzite. Colours grey-white, brown, pink, grey, some white, red.

Synonyms:

Note: After flowering in the autumn and extending through winter season the plant doesn’t need watering, but they will still be growing, the new bodies will be increasing in size extracting water from the outer succulent leaves, allowing them to shrivel away.  In fact the plant in this time extracts water and nutrient stored in the outer succulent leaves, allowing them to dehydrate relocating the water  to the rest of the plant and to the new leaves that form during this period until the old leaves are reduced to nothing more than "thin papery shells".

All the information and photos in cactus art files are now available also in the new the Encyclopaedia of Succulents. We hope you find this new site informative and useful.