Rebutia minuscula

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Rebutia minuscula
Rebutia minuscula, typ.
Scientific classification e
Kingdom: Plantae
Clade: Angiosperms
Clade: Eudicots
Order: Caryophyllales
Family: Cactaceae
Subfamily: Cactoideae
Genus: Rebutia
Species: R. minuscula
Binomial name
Rebutia minuscula
K.Schum.[1]

Rebutia minuscula is a species of cactus from northern Argentina.[1] It is the type species of the genus Rebutia.[2]

The status of the species of Rebutia is currently uncertain; indeed the genus as defined by Anderson (2001) has been shown to be polyphyletic.[3] Anderson describes R. minuscula as consisting of globe-shaped stems with a diameter of up to 5 cm (2 in), forming large clusters. The stem has 16–20 ribs with small but distinct tubercles ("bumps"). Each areole produces 25–30 fine whitish spines, 1–3 mm (0.0–0.1 in) long. As in other species of Rebutia, the flowers are not produced at the top of the stem, but from around the base. They are red, up to 4 cm (1.6 in) long.[1] Other sources include species such as R. marsoneri with yellow to orange flowers[4] in R. minuscula,[5] giving the species a much broader range of flower colour.

Rebutia minuscula K. Sch.

Schumann, Karl Moritz; Monatsschr. f. Kakt.-Kunde, 5: 102, 1895

Synonyma:

  • Echinopsis minuscula (K.Sch.) Web.; Dictionary Hort. Bois, p. 471, 1896
  • Echinocactus minusculus (K.Sch.) Web.; in K. Schumann, Gesamtbeschreibung der Kakteen, p. 395, 1898
  • Lobivia minuscula (K.Sch.) Kelsey & Dayton; Standard. Pl. Names, p. 73, 1942

References[edit]

  1. ^ a b c Anderson, Edward F. (2001), The Cactus Family, Pentland, Oregon: Timber Press, ISBN 978-0-88192-498-5 , p. 605
  2. ^ Anderson 2001, p. 599
  3. ^ Ritz, Christiane M.; Martins, Ludwig; Mecklenburg, Rainer; Goremykin, Vadim & Hellwig, Frank H. (2007), "The molecular phylogeny of Rebutia (Cactaceae) and its allies demonstrates the influence of paleogeography on the evolution of South American mountain cacti", American Journal of Botany 94: 1321–1332 
  4. ^ Anderson 2001, p. 604
  5. ^ Sheader, Martin (2012), "Show Reports: Summer Show South", The Alpine Gardener 80 (1): 88–91