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Derenbergia biloba (Marloth) Schwantes
Z. Sukkulentenk. 2: 138 1925
Family: AIZOACEAE

Accepted Scientific Name: Conophytum bilobum (Marloth) N.E.Br.
Gard. Chron. 1922, Ser. III. lxxii. 83.

Derenbergia biloba (Conophytum bilobum) Photo by: Frikkie Hall
This is is a common and easy to grow Cono, with yellow flowers. The easiest of all to grow. This plant is one of the most widespread and morphologically variable taxon of the genus. Many of its morphological and geographical variant was early classified as different independent species, but nowadays all this plant are considered part of a multiform species, where each form is linked to others by populations of plants with intermediate characteristics.

Synonyms:

See all synonyms of Conophytum bilobum
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Accepted name in llifle Database:
Conophytum bilobum (Marloth) N.E.Br.
Gard. Chron. 1922, Ser. III. lxxii. 83.
Synonymy: 122 Accepted name in llifle Database:
Conophytum bilobum subs. altum (L. Bolus) S.A.Hammer
Gen. Conophytum
Synonymy: 12 Accepted name in llifle Database:
Conophytum bilobum subs. claviferens S.A.Hammer
Dumpling & His Wife: New Views of Gen. Conophytum 86 (2002).

Accepted name in llifle Database:
Conophytum bilobum var. elishae (N.E.Br.) S.A.Hammer
Dumpling & His Wife: New Views of Gen. Conophytum 85 (2002).
Synonymy: 4 Accepted name in llifle Database:
Conophytum bilobum subs. gracilistylum (L. Bolus) S.A.Hammer
Gen. Conophytum 242, without basionym ref. 1993
Synonymy: 10 Accepted name in llifle Database:
Conophytum bilobum lacteum hort.
n. n., nov. comb. ined. [as: Conophytum lacteum L. Bolus 1967]
Synonymy: 2 Accepted name in llifle Database:
Conophytum bilobum var. linearilucidum (Lavis) S.A.Hammer
Dumpling & His Wife: New Views of Gen. Conophytum 85 (2002).
Synonymy: 2 Accepted name in llifle Database:
Conophytum bilobum var. muscosipapillatum (Lavis) S.A.Hammer
Dumpling & His Wife: New Views of Gen. Conophytum 85 (2002).
Synonymy: 2
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Common Names include:
ENGLISH: Living Pebble.
ITALIAN (Italiano): Pianta Sasso
RUSSIAN (Русский): Конофитум двулопастный

Subspecies, varieties, forms and cultivars of plants belonging to the Conophytum bilobum group

  • Conophytum apertum Tischer: (subs. altum) differs from Conophytum bilobum subs. altum in that it has pronounced wide open lobes
  • Conophytum apiatum N.E.Br.: (subs. bilobum) has conspicuous dots upon its whitish-green surface. Distribution: Remhoogte and adjacent areas, Little Namaqualand, South Africa.
  • Conophytum bilobum (Marloth) N.E.Br.: It is a very variable taxon with short internodes, leaf-tips (lobes) free, leaves 1 to 6 cm long, more or less triangular in shape and keeled. The flowers are large yellow.
  • Conophytum bilobum subs. altum (L. Bolus) S.A.Hammer: has long internodes long with depauperate bodies, and small flowers.
  • Conophytum bilobum var. elishae (N.E.Br.) S.A.Hammer: large growing bi-lobed species. A transparent zone can be seen just below the fissure and extends downwards.
  • Conophytum bilobum subs. gracilistylum (L. Bolus) S.A.Hammer: has very slender, long-lobed, pale green bodies with a fine spotting, with pale pink flowers. Distribution: northwest of Bitterfontein, West Cape Province, South Africa.
  • Conophytum bilobum lacteum hort.: White flowering form. Distribution: Kuboos mountains, Richtersveld, Little Namaqualand, Western Cape, South Africa.
  • Conophytum chauviniae (Schwantes) S.A.Hammer: (subs. gracilistylum) has leaf-tips free and triangular with deep red markings. Flowers pink to magenta with a prominent perianth tube. Distribution: Namaqualand, Western Cape, South Africa.
  • Conophytum christiansenianum L. Bolus: (subs. bilobum) has robust bodies 7 cm tall, 3 cm wide, leaf-tips free, 10-40 mm long, triangula and keeled. Flower yellow up to 3 cm. Distribution: Namaqualand, Western Cape, South Africa.
  • Conophytum conradii L. Bolus: (subs. bilobum) Bodies 3,5 centimetres long and 9 mm whide, deep green, leaf-tips free, triangular and keeled. Flowers scentless yellow. Distribution: Cape Province, South Africa.
  • Conophytum cordatum Schick & Tischer: (subs. bilobum) has pink-violet blooms, bodies 20-25 mm high, 12-15 mm broad, and 8-10 mm thick cordate (heart-shaped) in outline and keeled. Distribution: western part of South Africa.
  • Conophytum corniferum Schick & Tischer: (subs. altum) The shape of the bodies are as a normal altum and the internodes are somewhat elongated as expected for that subspecies.
  • Conophytum gracile N.E.Br.: (subs. altum) has short, erect, stems which are covered with old leaf sheaths. Distribution: Cape province, Little Namaqualand.
  • Conophytum igniflorum n.n.: has fiery orange flowers in autumn that set this species apart from other bilobed Conophytums. It could be a natural hybrid. Origins unknown exactly.
  • Conophytum lavisianum L. Bolus: (subs. bilobum) It is a southern "bilobum" form with bare body.
  • Conophytum luiseae Schwantes: (subs. altum)
  • Conophytum meyerae Schwantes: (subs. bilobum) is one of the largest and robust forms. Bodies 6 cm tall 6 cm wide. the leaf-tips are heart-shaped and keeled. Distribution: Little Namaqualand
  • Conophytum noisabisense L. Bolus: (subs. bilobum) Distribution: Little Namaqaland.
  • Conophytum ovatum L. Bolus: (subs. bilobum) has broader paired leaves and smaller flowers. Distribution: Namaqualand, South Africa.
  • Conophytum piriforme L. Bolus: has robust piriform (pear-shaped) bodies narrowed toward the apex. Distribution: Kuboos mountains, Richtersveld, Little Namaqualand, North-West Cape Province, South Africa.
  • Conophytum pluriforme L. Bolus: (subs. bilobum) bodies variable in shape.
  • Conophytum simplum N.E.Br.: (subsp. bilobum) has small, almost cylindrical bodies 40-50 mm high, 10-12 mm thick lobes erect, 6 mm long and wide. Distribution: Cape province, Little Namaqualand.
  • Conophytum supremum L. Bolus: (subs. bilobum) Thickness 3 cm, height 7 cm. Leaf-tips free and are 10 mm long, triangular and keeled. Margins green to purple. Distribution: Northern Cape and Little Namaqualand.
  • Conophytum variabile L. Bolus: (subs. bilobum)
  • Conophytum vlakmynense L. Bolus: (subs. bilobum) Big, fat, bi-lobed species, with broad pale greyish green bodies.


30441 frikkie Frikkie Hall
Derenbergia biloba (Conophytum bilobum) Photo by: Frikkie Hall
1131 cactus-art Cactus Art
Derenbergia biloba (Conophytum bilobum) Photo by: Cactus Art

18534 valentino Valentino Vallicelli
Lithops bilobum SB1345 RemhoogteLithops bilobum SB1345 Remhoogte, Northern Cape, South Africa. (Conophytum bilobum) Photo by: Valentino Vallicelli
1129 cactus-art Cactus Art
Conophytum bilobum (LAV8846 Soebatsfontein.) (Conophytum bilobum) Photo by: Cactus Art

1130 cactus-art Cactus Art
Derenbergia biloba (Conophytum bilobum) Photo by: Cactus Art
30442 frikkie Frikkie Hall
Derenbergia biloba (Conophytum bilobum) Photo by: Frikkie Hall


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