Parodia ottonis

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Parodia ottonis
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Caryophyllales
Family: Cactaceae
Subfamily: Cactoideae
Genus: Parodia
Species:
P. ottonis
Binomial name
Parodia ottonis
(Lehm.) N.P.Taylor

Parodia ottonis, also known as Indian head cactus, is a cactus found in Argentina, Brazil, Paraguay and Uruguay. There are two recognized subspecies.[1] The epithet ottonis honors the German botanist Christoph Friedrich Otto.

Description

The plant at first grows individually and later forms groups. The light to dark green or blue-green spherical shoots are often tapered towards the base. They reach diameters of 3 to 15 centimeters. The six to 16 distinct ribs are rounded or sharp-edged. There are usually only a few areoles on each rib . The bristle-like thorns that spring from them are straight, curved or twisted. The one to four central spines are brownish, reddish brown or yellowish and have a length of 0.8 to 4 centimeters. The four to 15 spines are whitish to yellowish or brownish and 0.5 to 3 centimeters long.[2]

The usually yellow flowers, rarely orange-red or red, reach lengths of 5 to 6 centimeters and would appear in late summer. Its flower tube is covered with brownish wool and bristles. The scars are dark red. The thick-walled egg-shaped to short cylindrical fruits tear open. They have diameters from 0.9 to 1.3 centimeters. The fruits contain, often very numerous, bell-shaped, glossy black seeds, which are strongly humped.[3]

Range

Parodia ottonis is common in

southern Brazil, southern Paraguay, Uruguay, and northeastern Argentina.[4]

Taxonomy

The first description as Cactus ottonis by Johann Georg Christian Lehmann was published in 1827. Nigel Paul Taylor presented the type 1987 in the genus Parodia . Other nomenclatural synonyms are Echinocactus ottonis (Lehm.) Link & Otto (1830), Malacocarpus ottonis (Lehm.) Britton & Rose (1922), Notocactus ottonis (Lehm.) A.Berger ( 1929) and Peronocactus ottonis (Lehm.)[5]

The following subspecies are distinguished:

  • Parodia ottonis subsp. ottonis
  • Parodia ottonis subsp. Horstii (F. Knight)

Gallery

  • A flowering specimen
    A flowering specimen
  • Botanical illustration
    Botanical illustration
  • Flower closeup
    Flower closeup
  • Side view of flower
    Side view of flower

References

  1. ^
    doi:10.2305/iucn.uk.2013-1.rlts.t151932a577721.en
    .
  2. ^ Zuloaga, FO, O. Morrone, MJ Belgrano, C. Marticorena & E. Marchesi. (eds.) 2008. Catalog of Vascular Plants of the Southern Cone (Argentina, South of Brazil, Chile, Paraguay and Uruguay). Monogr. Syst Bot. Missouri Bot. Gard 107 (1): i-xcvi, 1-983; 107 (2): i-xx, 985-286; 107 (3): i-xxi, 2287–3348.
  3. ISBN 978-3-642-05597-3
    , p. 174.
  4. ^ David Hunt, Nigel Taylor: New and unfamiliar names of Cactaceae to be used in the European Garden Flora . In: Bradleya . Volume 5, 1987, p. 93.
  5. ISBN 3-8001-4573-1
    , pp. 508-509 .
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