Arrojadoa

Arrojadoa is a genus of cacti, comprising 6 species and several varieties. It is named after the Brazilian botanist Miguel Arrojado Lisboa (1872–1932) who was superintendent of the Brazilian Railways at the time that Britton and Rose described the genus in 1920.[3] The genus occurs only in northern Brazil and is found at rocky places, under shrubs, which support their frail stalk. They are subtropical plants, with very little frost tolerance.

Arrojadoa
Arrojadoa penicillata
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Caryophyllales
Family: Cactaceae
Subfamily: Cactoideae
Tribe: Cereeae
Subtribe: Cereinae
Genus: Arrojadoa
Britton & Rose, (1920)
Species

See text.

Synonyms[1][2]
  • Pierrebraunia Esteves
  • Arrojadoopsis Guiggi
  • Stephanocereus A.Berger

Description

The species often have frail stalks that can be upright or procumbent, reaching 2 m high and about 2 to 5 cm thick. There are from 10 to 15 ribs, and ramifications are rare, and usually occur from the base.

The flowers are nocturnal and tube-like, measuring 1 to 3 cm in length and 0.5 to 1 cm in diameter. Flower colors can be pink or carmine. The fruit is berry-like, spherical with a maximal diameter of 1.5 cm, and pink or red when ripe.

Species

As of September 2023, Plants of the World Online accepted the following species:[1]

ImageScientific nameDistribution
Arrojadoa albifloraBrazil
Arrojadoa bahiensisBrazil
Arrojadoa dinaeBrazil
Arrojadoa eriocaulis Buining & BrederooNorthern Minas Gerais – Brazil
Arrojadoa leucostele (Gürke) Anceschi & MagliEastern Brazil
Arrojadoa marylanaeBahia, Minas Gerais - Brazil
Arrojadoa multiflora F.RitterBahia - Brazil
Arrojadoa olsthoorniana Hofacker, M.Machado & R.Pontessouth Bahia - Brazil
Arrojadoa penicillataBahia - Brazil
Arrojadoa rhodanthaBahia, Minas Gerais, Piaui - Brazil

Cultivation

These tropical cacti are ideal for hanging baskets because of their snake like growth, but they are difficult to cultivate. They grow relatively rapidly in good conditions. Propagation is done more by seed than by cuttings. It grows best on slightly humid soil and with plenty of watering from spring to autumn. In winter it should be left without water and at a minimal temperature of 10 °C.[4]

References
  1. "Arrojadoa Britton & Rose". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 29 September 2023.
  2. Anderson 2001, p. 117
  3. "On-line Guide to the positive identification of Members of the Cactus Family".
  4. "Arrojadoa rhodantha".
  • Anderson, Edward F. (2001), The Cactus Family, Pentland, Oregon: Timber Press, ISBN 978-0-88192-498-5
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.