Origin and Habitat: Namibia
Type Locality: 10 km NW of Helmeringhausen, Namibia.

• Lithops gulielmi L. Bolus

• Lithops schwantesii Dinter
• Lithops gulielmi L. Bolus
• Lithops kuibisensis Dinter ex H.Jacobsen
• Lithops schwantesii C076 70 km W of Maltahöhe, Namibia
• Lithops schwantesii C077 Near Helmeringhausen, Namibia
• Lithops schwantesii C079 25 km SW of Helmeringhausen, Namibia
• Lithops schwantesii C080 30 km SW of Helmeringhausen, Namibia
• Lithops schwantesii C106 80 km W of Maltahöhe, Namibia
• Lithops schwantesii C143B 60 km NNE of Aus, Namibia
• Lithops schwantesii C144 (grey Form) 55 km NNE of Aus, Namibia
• Lithops schwantesii C145 55 km NE of Aus, Namibia
• Lithops schwantesii C146 55 km NE of Aus, Namibia
• Lithops schwantesii C150 (syn. kuibisensis) 25 km E of Aus, Namibia
• Lithops schwantesii C164 25 km SW of Helmeringhausen, Namibia
• Lithops schwantesii C184 (syn. gulielmi) TL: 10 km NW of Helmeringhausen, Namibia
• Lithops schwantesii C185 Near Helmeringhausen, Namibia
• Lithops schwantesii C190 70 km SW of Maltahöhe, Namibia
• Lithops schwantesii C191 60 km NW of Helmeringhausen, Namibia
• Lithops schwantesii C211 10 km SE of Helmeringhausen, Namibia
• Lithops schwantesii C250 (grey Form) 120 km SE of Aus, Namibia
• Lithops schwantesii C265 45 km N of Helmeringhausen, Namibia
• Lithops schwantesii var. marthae (Loesch & Tischer) D.T.Cole
• Lithops dinteri var. marthae (Loesch & Tischer) B.Fearn
• Lithops incoronata Dinter
• Lithops marthae Loesch & Tischer
• Lithops schwantesii var. marthae C148 60 km SSE of Aus, Namibia
• Lithops schwantesii var. marthae C249 TL: 60 km SSE of Aus, Namibia
• Lithops schwantesii var. marthae C299 120 km SSE of Aus, Namibia
• Lithops schwantesii var. marthae C411 75 km SE of Aus, Namibia
• Lithops schwantesii var. rugosa (Dinter) de Boer & Boom
• Lithops rugosa Dinter
• Lithops schwantesii var. rugosa C192 60 km NW of Helmeringhausen, Namibia
• Lithops schwantesii var. rugosa C247 TL: 40 km NW of Helmeringhausen, Namibia
• Lithops schwantesii var. triebneri (L. Bolus) de Boer & Boom
• Lithops triebneri L. Bolus
• Lithops schwantesii var. urikosensis (Dinter) de Boer & Boom
• Lithops christinae de Boer
• Lithops kunjasensis Dinter
• Lithops schwantesii var. kunjasensis (Dinter) de Boer & Boom
• Lithops schwantesii var. nutupsdriftensis de Boer
• Lithops urikosensis Dinter
• Lithops schwantesii var. urikosensis C074 (syn. christinae) 50 km W of Maltahöhe, Namibia
• Lithops schwantesii var. urikosensis C075 (syn. nutupsdriftensis) TL: 35 km W of Maltahöhe, Namibia
• Lithops schwantesii var. urikosensis C083 Near Bethanien, Namibia
• Lithops schwantesii var. urikosensis C105 TL: 100 km NW of Maltahöhe, Namibia
• Lithops schwantesii var. urikosensis C107 (syn. christinae) 20 km W of Maltahöhe, Namibia
• Lithops schwantesii var. urikosensis C186 (syn. kunjasensis) 5 km NE of Helmeringhausen, Namibia
• Lithops schwantesii var. urikosensis C210 (syn. christinae) TL: 45 km W of Maltahöhe, Namibia
• Lithops schwantesii var. urikosensis C248 (syn. kunjasensis) 15 km NE of Helmeringhausen, Namibia

• Lithops schwantesii subs. gebseri (de Boer) D.T.Cole
• Lithops schwantesii var. gebseri de Boer
• Lithops schwantesii subs. gebseri C165 TL: 70 km S of Maltahöhe, Namibia

Description: Lithops gulielmiSN|11518]]SN|11533]] is one of the innumerable local form of the very variable Lithops schwantesiiSN|11518]]SN|11518]]). It distinguishes for the presence of a rugulose grey‑white surface, with many prominent blood‑red dots or lines in the depressions, the dots forming the prominent feature, lines and dots isolated and not connected with one another. It has the same variable characteristics of the species and cultivated plants can be reliably distinguished from Lithops schwantesiiSN|11533]]SN|11518]] only when seeds or details of wild source are available.
Habit: It is a tiny caespitose succulent that grows almost completely buried in the soil with only the upper truncated portion of leaves visible. Bodies usually forming small groups with 1-3 heads (or more), up to 4 cm high. As with many other species, several varieties and local forms have been described based on the variation of the colour of the tops of the leaves.
Bodies (paired leaves): Truncate in profile, 20-40 mm long, 15-30 mm broad, tops of leaves convex, fissure shallow, faces flush, mostly elliptic-reniform, top of lobe convex slightly rugulose , sides light grey with a narrow deeper grey band near the top; tight grey‑white, in the depressions with many prominent blood‑red dots or lines, the dots forming the prominent feature, lines and dots isolated and not connected with one another; window opaque. Old leaves persist for one year usually, often for two years.
Flower: Yellow, often with longish pedicels, 20-36 mm in diameter.
Blooming season: Autumn.
Fruit: 5(-6) chambered, profile boat-shaped, top more or less flat, faces elliptic to broadly elliptic.

Bibliography: Major refences and further lectures
1) Heidrun E. K. Hartmann “Aizoaceae F – Z” Springer 2002
2) Achim Hecktheuer “Mesembs, mehr als nur Lithops” Books on Demand GmbH Norderstedt. 2008
3) Desmond T. Cole & Naureen A. Cole, Uwe Beyer, Yves Delange “Les Lithops” SUCCULENTES Spécial 2008 AIAPS (now Terra seca). 2008
4) Desmond T. Cole & Naureen A. Cole “LITHOPS Flowering Stones” Cactus & Co. Libri. 2005
5) Yasuhiko Shimada “The Genus Lithops” Dobun Shoin. 2001
6) Rudolf Heine “Lithops - Lebende Steine” Neumann Verlag. 1986
7) Bernd Schlösser “Lithops – Lebende Steine” Praktische Anleitung für die Zimmerkultur. BussinessPoint MEDIA. 2000
8) Steven A. Hammer “Lithops – Treasures of the veld” British Cactus and Succulent Society. 1999
9) Desmond T. Cole “Lithops – Flowering Stones” Acorn Books 1988
10) Rudolf Heine “Lithops – lebende Steine” Neumann Verlag. 1986
11) David L. Sprechman “Lithops” Associated University Presses, Inc. 1970
12) Gert Cornelius Nel “Lithops” Hortors Limited, South Africa 1946
13) Edgar Lamb "The illustrated reference on cacti and other succulents" Blandford Press. 1978
14) Christopher Brickell, Royal Horticultural Society "RHS A-Z Encyclopedia of Garden Plants: K-Z., Volume 2" Kindersley, 2008
15) G. C . Nel “Lithops: Plantae succulantae, rarissimae, in terra obscuratae, e famailia Aizoaceae, ex Africa australi” Hortors Limited, 78, Bree Street, Cape Town, South Africa 1946

Cultivation and Propagation: 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 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.
Notes: In the winter season the plant doesn’t need watering, but they will still be growing, the new bodies will be increasing in size as the old outer leaves begin to shrivel. 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".