Index:



L. pseudotruncatella subsp. pseudotruncatella var. pseudotruncatella
    acf 'Albiflora'
L. pseudotruncatella subsp. pseudotruncatella var. elisabethiae
L. pseudotruncatella subsp. pseudotruncatella var. riehmerae
L. pseudotruncatella subsp. archerae
    acf 'Split Pea'
L. pseudotruncatella subsp. dendritica
L. pseudotruncatella subsp. groendrayensis
L. pseudotruncatella subsp. volkii



Lithops pseudotruncatella (Berg.) N.E. Br. (1908)


subsp. pseudotruncatella


var. pseudotruncatella



     
     

Origin:


Collected by Professor Kurt Dinter in 1897. Latin pseudo- 'false or resembling', truncatella 'somewhat truncate', so named because of its supposed similarity in shape to Mesem. truncatellum.

Distribution:


Namibia, in an are centred at Windhoek with a radius of about 40 km, but with a large extension projecting some 120 km beyond Steinhausen to the NE. TL recorded as 'Damaraland, Great Namaqualand', with no further detail.
Stone: Quartzite; mica schist. Colours white, red-stained, yellow-brown, brown, some grey, dark brown, red-brown.

Description:


Characterized by its usually densely and ramosely branched channels and rubrications, and its very numerous dusky dots.
Profile truncate; flat to slightly convex, occasionally slightly concave; fissure shallow, 4-8 mm; lobes conjunct.
Face flush, mostly ± reniform, lobes mostly ± unequal; mostly opaque; smooth to very slightly rugose.
Margins not clearly distinguishable, being irregularly interrupted by numerous branched intrusions from the channels and rubrications, and also by dusky dots; inner margins often fairly distinct.
Windows usually not clearly distinguishable, always ± occluded, often reduced to narrow channels which barely accomodate the rubrications; sometimes the combination of channels and dusky dots produces an obscurely transluscent effect which has been likened to an oil stain.
Channels not clearly defined, very irregular, slightly impressed, sometimes quite broad, usually narrow and often reduced to slender grooves.
Islands manifest as opaque areas ± enclosed by channels, irregular and not distinctly outlined, few to many, small to large.
Rubrications in the channels, usually irregularly and extensively branched, often connected to form a broken network but sometimes reduced to a scattering of short lines, dashes and dots; the ends often finely ramose and tapering off into the outer margins, but terminating in a prominent line along the inner margin.
Dusky dots usually very numerous, mostly clearly visible, scattered irregularly over the whole face, including margins, islands and channels, and occasionally extending over onto the shoulders; often concentrated along the edges of the rubrications, and then difficult to distinguish from the channels.
Colours: Face (margins & islands) opaque pale grey or beige tinted with various shades of yellow-brown, orange-brown, brown, pink, greenish yellow, mauve or blue, the margins sometimes obscurely banded in a slightly lighter colour. Channels obscurely transluscent dull greenish or bluish grey or greenish green. Rubrications various shades of brown, orange-brown, red-brown, red or purplish brown. Dusky dots dull dark greenish or bluish grey. Shoulders as for the margins or a little greyer and duller.
Size: Medium to very large, facial diameters up to 50 X 35 mm, mostly about 25-40 x 20-30 mm. Number of heads up to 20 or more, mostly 2-4.

Flowers:


Yellow, medium to very large, up to 50 mm Ø, mostly 25-40 mm Ø.
Seed capsules mostly 6-merous (73%), otherwise mainly 7-merous (22%), or 8-merous (3%) or 5-merous (2%). Profile rotund, top ± peaked, occasionally flat. Face mostly ± round, with a hinge-rim, up to 13 X 11 mm, mostly about 8 X 7,5 mm.
Seeds light brown to brown; tuberculate 3.

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Lithops pseudotruncatella (Berg.) N.E. Br. (1908)


subsp. pseudotruncatella
var. pseudotruncatella
acf 'Albiflora' (1955)



Origin:


In 1923 Kurt Dinter reported the extremely rare occurence of a white-flowering form of var. pseudotruncatella , and this was subsequently published as forma albiflora Jacobs. To the best of our knowledge, this form has not been collected again and does not exist in cultivation. However, in order to bring its nomenclature into line with that of all other similar mutants, it is now relegated to the status of an aberrant colour form.

Description:


Flowers white (instead of yellow), but in all other respects the plant would presumably be indistinguishable from the type, and would therefore be identifiable only when in flower.

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Lithops pseudotruncatella (Berg.) N.E. Br. (1908)


subsp. pseudotruncatella


var. elisabethiae (Dint.) H.W. de Boer & B.K. Boom (1933)



   

Origin:


Collected by Elisabeth Schneider in 1932, and named for her.

Distribution:


Namibia, at only one known locality, in the foothills of the Waterberg Mountains, SE of Otjiwarongo (TL C187).
Stone: Quartzite with some gneiss. Colours pink, whiite, pinkish grey.

Description:


Very similar to the type variety, and differing from it mainly in its characteristic bluish-pink colour; however, occasional specimens of the type variety come very close to var. elisabethiae in colour and markings.
Profile truncate; flat to slightly convex, occasionally slightly concave; fissure shallow, 4-8 mm; lobes conjunct.
Face flush, mostly ± reniform, lobes mostly ± unequal; mostly opaque; smooth to very slightly rugose.
Margins not clearly distinguishable, irregularly interrupted by intrusions from the channels.
Windows usually absent, occasionally manifest as very obscurely transluscent areas.
Channels usually a branched network or scattering of very slightly impressed grooves or pits which are almost completely filled by the rubrications.
Islands manifest only as irregular opaque areas enclosed by the channels.
Rubrications in the channels, a number of branched lines, hooks or dots, sometimes linked into a broken network.
Dusky dots usually very numerous, scattered irregularly over the whole face, sometimes concentarted along the rubrications and producing a semblance of transluscent channels; it is usually difficult to distinguish between the slender channels and concentrations of dusky dots.
Colours: Face (margins & islands) opaque pale grey tinged with various shades of milky-pink or milky bluish pink. Channels rarely discernible at the ends or along the sides of the rubrications, obscurely transluscent dull greyish green. Rubrications various shades of dull purplish brown, brown or red-brown. Dusky dots dull dark grey-green or blue-grey. Shoulders as for the face or somewaht lighter.
Size: Medium to large, facial diameters up to 40 X 30 mm, mostly about 35 x 25 mm. Number of heads up to 6 or more, mostly 2-3.

Flowers:


Yellow, medium, up to 35 mm Ø, mostly 25-30 mm Ø.
Seed capsules mostly 6-merous (78%), otherwise 5-merous (18%), or 7-merous (3%) or 4-merous (1%). Profile rotund, flat to slightly peaked. Face round to broadly elliptic, with a hinge-rim, up to 8,5 X 7,5 mm, mostly about 7,5 X 6,5 mm.
Seeds light brown; tuberculate 2, flecked.

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Lithops pseudotruncatella (Berg.) N.E. Br. (1908)


subsp. pseudotruncatella


var. riehmerae D.T. Cole (1987)



 

Origin:


Collected by Wilhelm Triebner, presumably on 22 July 1934, and again by D.T. & N.A. Cole on 7 January 1968 (C097 PRE). Named for Mrs Edith Riehmer who discovered it. This variety was for nearly thirty years incorrectly known as *Lithops edithae N.E. Br. or *L. pseudotruncatella var. edithae (N.E. Br.) H.W. de Boer & B.K. Boom.

Distribution:


Namibia, in a small area to the SE of Windhoek. TL Rietfontein (C097).
Stone: Quartzite. Colours white, red-stained white, pink, some brown.

Description:


Closely related to the type variety, and differing therefrom mainly in its generally smaller size, pale grey colour and less extensive markings.
Profile truncate; flat to slightly convex; fissure shallow, 3-5 mm; lobes conjunct.
Face flush, mostly slightly reniform, lobes mostly ± unequal; opaque to very obscurely transluscent; smooth.
Margins not clearly distinguishable, irregularly interrupted by intrusions from the channels.
Windows usually absent, the face then mostly opaque; occasionally indistinctly discernible as obscurely transluscent.
Channels usually narrow, an irregularly branched connected network, or occasionally a scattering, of extremely shallow grooves which accomodate the rubrications.
Islands absent or manifest only as irregular opaque areas enclosed by channels.
Rubrications set in the channels, a number of branched lines, sometimes forming a connected network, often reduced to rather sparse and indistinct short lines, dashes and dots.
Dusky dots numerous, scattered irregularly over the whole face, but often concentrated along the rubrications to produce a semblance of channels; it is often difficult to distinguish between channels and concentrations of dusky dots.
Colours: Face (margins & islands) usually opaque pale grey, faintly tinted with blue, green, yellow or pink, the margins sometimes obscurely branched in a slightly lighter colour. Windows occasionally barely discernible as obscurely transluscent greenish, bluish or yellowish grey. Channels obscurely transluscent bluish or greenish grey. Rubrications obscurely visible, dull brown, orange-brown or red-brown. Dusky dots dull greenish or bluish grey. Shoulders as for the margins or somewaht paler.
Size: Small to medium, facial diameters up to 33 X 22 mm, mostly about 25 x 18 mm. Number of heads up to 4 or more, mostly 2.

Flowers:


Yellow, medium to large, up to 40 mm Ø, mostly 25-30 mm Ø.
Seed capsules mostly 6-merous (80%), otherwise 7-merous (17%), or 5-merous (2%) or 8-merous (1%). Profile ± rotund, top slightly convex to slightly peaked, occasionally flat. Face round to broadly elliptic, with a hinge-rim, up to 8,5 X 7 mm, mostly about 7,3 X 6,5 mm.
Seeds brown; tuberculate 3.

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Lithops pseudotruncatella (Berg.) N.E. Br. (1908)


subsp. archerae (H.W. de Boer) D.T. Cole (1967)



     

Origin:


Collected by Mrs Jacoba (Kowie) M.N. Archer in 1966, and named for her.

Distribution:


Namibia, in a very restricted area high in the Naukluft Mountains, some 120 km NW of Maltahöhe TL C306.
Stone: Pinkish grey and grey-white dolomite and limestone, some brown and grey.

Description:


Distinguished by its milky grey-green colour, truncate profile and round-elliptic face; uniform and usually easy to identify.
Profile truncate; flat to slightly concave, sometimes slightly convex; fissure shallow, 4-9 mm; lobes conjunct.
Face flush, mostly round-elliptic, lobes mostly ± equal; mostly opaque; smooth to very slightly rugose.
Margins, windows, channels and islands usually absent or very obscure.
Windows sometimes manifest as obscurely transluscent areas within indistinct light-coloured margins.
Channels occur only as a very slightly impressed broken network of narrow grooves, mostly taken up by the rubrications.
Islands manifest only as irregular opaque areas enclosed by the channels.
Rubrications rarely entirely absent, occasionally a coarse broken network of indistinct narrow lines set in the channels, usually reduced to a number of broken lines, hooks and dots, sometimes very indistinct.
Dusky dots sometimes absent, otherwise few to many, scattered irregularly over the whole face, but usually very indistinct and visible only with a lens.
Colours: Face usually in various shades of opaque milky grey-green, sometimes bluish or yellowish; the margins often obscurely banded in more yellowish or lighter grey-green or grey; within which the window area sometimes contrasts as somewhat darker and very obscurely transluscent. Channels dark transluscent grey-green, generally visible only under a lens. Rubrications orange-brown, brown or red. Dusky dots dull grey-green. Shoulders as for margins, or greyer and duller.
Size: Medium to large, facial diameters up to 40 X 30 mm, mostly about 35 x 25 mm. Number of heads up to 10 or more, mostly 1 or 2.

Flowers:


Yellow, medium to large, up to 40 mm Ø, mostly 25-35 mm Ø.
Seed capsules mostly 6-merous (69%), otherwise 7-merous (15%), 5-merous (10%), 8-merous (5%) or 4-merous (1%). Profile ± rotund, top flat to peaked. Face round to broadly elliptic, with a hinge-rim, up to 12,5 X 11,5 mm, mostly about 9,5 X 8,5 mm.
Seeds yellow-brown to light brown; smooth to rugose 1 to tuberculate 1, flecked.

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Lithops pseudotruncatella (Berg.) N.E. Br. (1908)


subsp. archerae
acf 'Split Pea' (1999)



Description:


Differs from the type in being green in colour.

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Lithops pseudotruncatella (Berg.) N.E. Br. (1908)


subsp. dendritica (G.C. Nel) D.T. Cole (1946)



       

Origin:


Collected by M. Otzen in 1945 or earlier. Latin dendritica, 'branched like a tree', in reference to the rubrications.

Distribution:


Namibia, in an area to the NW, W, SW and S of Rehoboth. TL 'South-West Africa; Locality unknown', but probably in the vicinity of Klein Aub (C357).
Stone: Quartzite. Colours white and red-stained white, brown, red-brown, some grey, black.

Description:


Distinguished from the type by its more regularly branched channels and rubrications (almost a honeycomb pattern), usually more reddish colour and few dusky dots.
Profile truncate; flat to slightly concave; fissure shallow, 3-8 mm; lobes conjunct.
Face flush, mostly round-elliptic, lobes mostly ± equal; mostly opaque; smooth to very slightly rugose.
Margins usually not clearly distinguishable, much incised by simple or branched terminations of the channels.
Windows usually manifest as areas reticulated by very slender channels, occasionally discernible as very obscurely transluscent.
Channels usually a fairly regular and distinct network (almost a honeycomb pattern) of narrow and slightly impressed grooves which are almost filled by the rubrications; sometimes a similar network of very slender obscurely transluscent grooves with very few or no rubrications.
Islands manifest as numerous opaque areas enclosed by rubrications and/or channels.
Rubrications in the channels, sometimes absent, but usually an extensive fairly regular network of connected lines, sometimes reduced to few or many dashes, hooks or dots.
Dusky dots very often absent, otherwise rather sparse and obscure, mostly visible only under a lens.
Colours: Face (margins & islands) various shades of opaque pink, bluish pink, orange-brown, or greenish, yellowish or pale grey, the margins sometimes obscurely banded in a lighter hue. Channels obscurely transluscent light brown or greenish, yellowish or pinkish brown. Rubrications orange-brown, brown, blood-red or purplish red. Dusky dots dull greenish or bluish grey. Shoulders as for the margins or somewhat greyer and duller.
Size: Medium to very large, facial diameters up to 45 X 37 mm, mostly about 35 x 28 mm. Number of heads up to 4 or more, but seldom more than 1.

Flowers:


Yellow, medium to very large, up to 52 mm Ø, mostly 30-45 mm Ø.
Seed capsules mostly 6-merous (61%), or 7-merous (26%), the remainder mainly 8-merous (11%) or 9-merous (2%). Profile boat-shaped to rotund, top flat to slightly convex, occasionally slightly peaked. Face round to broadly elliptic, with a hinge-rim, up to 13 X 10 mm, mostly about 8 X 7 mm.
Seeds yellow-brown to light brown; rugose 1 to tuberculate 3, flecked.

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Lithops pseudotruncatella (Berg.) N.E. Br. (1908)


subsp. groendrayensis (Jacobs) D.T. Cole (1961)



 

Note: This taxon was published by Jacobsen as a variety of L. pseudotruncatella, but was placed by Dr H.W. de Boer as a variety of l. vallis-mariae, on the grounds that, like that species, it is grey-white in colour and has a minutely pin-pricked or wrinkled top surface. In fact the latter feature is frequently absent in subsp. groendrayensis. In other more significant respects, notably flower and seed capsule structures, flowering time and hymen feature, it is quite different from L. vallis-mariae, but it is clearly allied to its very close neighbour, L. pseudotruncatella subsp. dendritica. It is noteworthy that, to the best of our present knowledge, there is a gap of some 100 km between subsp. groendrayensis and the nearest colonies of L. vallis-mariae known to us. Nevertheless, the posibility that subsp. groendrayensis is a natural hybrid population cannot be excluded; it is much more plausible than the alternative hypothesis that subsp. groendrayensis represents an intermediate phylogenetic stage between L. pseudotruncatella and L. vallis-mariae. Dr de Boer's change of spelling of the name from groendrayensis to *groendraaiensis was contrary to the rules, for the spelling of a name as originally published is to be retained unless typographically incorrect, or orthographically incorrect in respect of its Latin components.

Origin:


Collected by Wilhelm Triebner in 1957, on the farm Groendraai, and distributed by him as Lithops sp. 'groendray', 'greendray' and 'groendraai'.

Distribution:


Namibia, in a small area extending 30-40 km S and SSE of Rehoboth. TL Groendraai (C244).
Stone: Quartzite. Colours white, some red-stained white, pink, yellow-brown, brown, greyish green, red.

Description:


Distinguished by its truncate top, grey-white colour and monocephalous habit; very uniform and easily identifiable.
Profile truncate; flat to slightly concave, sometimes slightly concave; fissure shallow, 4-8 mm; lobes conjunct.
Face flush, round-elliptic, lobes ± equal; opaque; smooth, sometimes minutely wrinkled or dotted with minute pin-pricks which are often visible only with a lens.
Margins, windows and islands absent or very obscure.
Channels mostly absent or very obscurely visible, usually a number of superficial fine dots, hooks, dashes and/or short lines which may infrequently constitute a coarse broken network.
Rubrications usually absent, rarely manifest as very obscure subcutaneous dots or very short lines in the channels of reticulated plants, but visible only with a lens.
Dusky dots not visible.
Colours: Face opaque pale grey-white, sometimes faintly tinted with blue, pink or green; margins sometimes obscurely discernible as a little paler than the rest of the face. Channels very obscurely transluscent greenish grey. Rubrications dull red. Shoulders as for the margins or greyer and duller.
Size: Medium to very large, facial diameters up to 53 X 44 mm, mostly about 35 x 30 mm. Number of heads very rarely more than 1, exceptionally 2.

Flowers:


Yellow, medium to large, up to 42 mm Ø, mostly 30-35 mm Ø.
Seed capsules mostly 6-merous (48%), 7-merous (26%), or 8-merous (21%), the remainder 9-merous (4%) or 5- or 10-merous (1%). Profile rotund to boat-shaped, top flat, sometimes slightly convex or peaked. Face broadly elliptic, occasionally ± round, with a hinge-rim, up to 11 X 9,5 mm, mostly about 8,5 X 7,5 mm.
Seeds yellow-brown ; rugose 1 to tuberculate 1, flecked.

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Lithops pseudotruncatella (Berg.) N.E. Br. (1908)


subsp. volkii (Schwante. ex H.W. de Boer & B.K. Boom) D.T. Cole (1961)



       

Origin:


Collected in 1953 by H.J.W. (Willy) Giess, then Curator of the SWA Herbarium in Windhoek, and, at his request, named for Professor Dr Otto Heinrich Volk of Würzburg, Germany.

Distribution:


Namibia, at only one known locality, SSE of Windhoek. TL near Bergland Station (C069).
Stone: Quartzite with some calcite. Colours white, red-stained white, some yellow-brown, grey, dark brown.

Description:


Distinguished by its pale bluish-white colour, very few rubrications and few or no dusky dots.
Profile truncate; usually somewhat convex; fissure shallow, 4-8 mm; lobes conjunct.
Face flush, mostly slightly reniform, lobes ± unequal; opaque; smooth to very slightly rugose.
Margins and windows absent or not clearly distinguishable.
Channels occasionally very obscure and barely visible, usually a faintly visible coarse broken network or scattering of very slightly impressed slender lines, dashes and dots.
Islands manifest only as regular to irregular opaque areas enclosed by the channels.
Rubrications sometimes absent, otherwise set in the channels, a number of lines, dashes and dots, usually very obscure and barely discernible without a lens, but occasionally constituting a faint broken network.
Dusky dots mostly absent, otherwise sparse, very obscure and barely visible without a lens.
Colours: Face presenting a slightly polished marble-like appearance; opaque milky bluish-white, sometimes faintly tinged with pink, the margins occasionally very obscurely banded in a slightly paler tint. Channels obscurely transluscent pale bluish grey, sometimes tinted pinkish or brownish. Rubrications very obscure, dull brown or red-brown. Dusky dots very indistinct bluish grey. Shoulders as for the face, or slightly paler.
Size: Medium to large, facial diameters up to 38 X 26 mm, mostly about 30 x 20 mm. Number of heads up to 4, mostly 2.

Flowers:


Yellow, medium to large, up to 38 mm Ø, mostly 25-30 mm Ø.
Seed capsules mostly 6-merous (58%), or 7-merous (32%), the remainder 8-merous (9%) or 5-merous (1%). Profile rotund, top flat to peaked. Face round to broadly elliptic, with hinge-rim, up to 10 X 10 mm, mostly about 8,5 X 8 mm.
Seeds brown to dark brown ; tuberculate 3.

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* Information from COLE, DESMOND T. and NAUREEN A., (2005) Lithops Flowering Stones, Cactus&Co. Libri


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