• Lithops viridis H.A.Lückh.
• Lithops comptonii var. viridis (H.A.Lückh.) B.Fearn

• Lithops viridis H.A.Lückh.
• Lithops comptonii var. viridis (H.A.Lückh.) B.Fearn
• Lithops viridis C127 TL: 25 km S of Loeriesfontein, South Africa

Notes: Lithops viridisSN|13263]]SN|13263]]is is considered to be a rather primitive Lithops form, the green, soft skinned leaves not completely fused presumably represent the most primitive leaf condition within the genus.

Bibliography: Major refences and further lectures
1) Heidrun E. K. Hartmann (2002) “Aizoaceae F – Z” Springer
2) Achim Hecktheuer (2008) “Mesembs, mehr als nur Lithops” Books on Demand GmbH Norderstedt. ISBN-13 978-3-8370-1724-3
3) Desmond T. Cole & Naureen A. Cole, Uwe Beyer, Yves Delange (2008) “Les Lithops” SUCCULENTES Spécial 2008 AIAPS (now Terra seca). ISSN 0258-5359
4) Desmond T. Cole & Naureen A. Cole (2005) “LITHOPS Flowering Stones” Cactus & Co. Libri. ISBN 88-900511-7-5 ISBN-13 978-88-900511-7-3
5) Yasuhiko Shimada (2001) “The Genus Lithops” Dobun Shoin. ISBN 4-8103-4066-X
6) Rudolf Heine (1986) “Lithops - Lebende Steine” Neumann Verlag. ISBN 3-7402-0000-6; ISBN-13 978-3-7402-0000-8
7) Bernd Schlösser (2000) “Lithops – Lebende Steine” Praktische Anleitung für die Zimmerkultur. BussinessPoint MEDIA. ISBN 3-934945-01-5; ISBN-13 978-3-934945-01-2
8) Steven A. Hammer (1999) “Lithops – Treasures of the veld” British Cactus and Succulent Society. ISBN 0-902-099-64-7; ISBN-13 978-0-902099-64-7
9) Desmond T. Cole (1988) “Lithops – Flowering Stones” Acorn Books CC. ISBN 0-620-09678-0; ISBN-13 978-0-620-09678-2
10) Rudolf Heine (1986) “Lithops – lebende Steine” Neumann Verlag. ISBN 3-7402-0000-6; ISBN-13 978-3-7402-0000-8
11) David L. Sprechman (1970) “Lithops” Associated University Presses, Inc. SBN 8386-6902-6
12) Gert Cornelius Nel (1946) “Lithops” Hortors Limited, South Africa