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Ortegocactus macdougallii

Ortegocactus macdougallii


Scientific Name

Ortegocactus macdougallii Alexander

Synonyms

Neobesseya macdougallii

Scientific Classification

Family: Cactaceae
Subfamily: Cactoideae
Tribe: Cacteae
Genus: Ortegocactus

Description

Ortegocactus macdougallii is a small, slow-growing, clump-forming cactus with greenish-gray stems that grow up to 1.6 inches (4 cm) in diameter. The stems have rhomboid tubercles, one central spine, and 7 to 8 radial spines per areole. The spines are black or whitish with a black tip and 0.4 inches (1 cm) long. Flowers are yellow, funnel-shaped, up to 1.2 inches (3 cm) long, and up to 2 inches (5 cm) in diameter. Fruits are reddish, spherical, slightly extended, and up to 0.2 inches (0.5 cm) in diameter.

Hardiness

USDA hardiness zone 9a to 11b: from 20 °F (−6.7 °C) to 50 °F (+10 °C).

How to Grow and Care

Like so many of the small species of Mexican cacti, Ortegocactus is highly prized by collectors. Ortegocactus macdougallii likes light shade to full sun. It is often grafted since it is tricky to grow when on its own roots. Water moderately in summer and very carefully if at all in winter. It shows a distinct intolerance to overwatering either by rotting off or by bursting of the epidermis. Grow Ortegocactus in a fast-draining mineral mix. To prevent growing a monster totally out of proportion to its attractive and natural form, you should limit the fertilizer.

Many authors recommend grafting, first on Pereskiopsis and soon on Myrtillocactus geometrizans. If it does not reject the stock, it is possible to be cultivated without problems. See more at How to Grow and Care for Ortegocactus.

Origin

Native to Mexico (Oaxaca).

Links

  • Back to genus Ortegocactus
  • Succulentopedia: Browse succulents by Scientific Name, Common Name, Genus, Family, USDA Hardiness Zone, Origin, or cacti by Genus

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Ortegocactus Species

Category:

Water Requirements:

Average Water Needs Water regularly do not overwater

Sun Exposure:

Foliage:

Foliage Color:

Height:

Spacing:

Hardiness:

USDA Zone 9a: to -6.6 °C (20 °F)

USDA Zone 9b: to -3.8 °C (25 °F)

USDA Zone 10a: to -1.1 °C (30 °F)

USDA Zone 10b: to 1.7 °C (35 °F)

USDA Zone 11: above 4.5 °C (40 °F)

Where to Grow:

Danger:

Plant has spines or sharp edges use extreme caution when handling

Bloom Color:

Bloom Characteristics:

Bloom Size:

Bloom Time:

Other details:

Soil pH requirements:

Patent Information:

Propagation Methods:

From seed direct sow after last frost

Seed Collecting:

Allow unblemished fruit to ripen clean and dry seeds

Unblemished fruit must be significantly overripe before harvesting seed clean and dry seeds

Properly cleaned, seed can be successfully stored

Regional

This plant is said to grow outdoors in the following regions:


Ortegocactus macdougallii - garden

Accepted Scientific Name: Ortegocactus macdougallii Alexander
Cact. Succ. J. (Los Angeles) 33: 39, fig. 17, 18. 1961

Origin and Habitat: Mexico (Oaxaca), San Jose Lachuguiri, in a small practically inaccessible zone and it is known from a single location.
Altitude: It grows at a height of 1600-2000 meters.
Habitat: Grows in grasslands on an escarped limestone stone rock top, practically deprived of trees and scrubs.

Description: Ortegocactus macdougallii is a clumping, slow-growing, cactus that form tiny bushes only few centimetres in size.
Stems: This species has a strange and unmistakable lime-green-grey coloured epidermis, each stem extends with the years, reaching a diameter of 3 to 4 cm. However, as these plants age, they tend to develop rust-coloured spots on them even in the care of the most accomplished growers. This rust-coloured spots are a common feature of wild plants too, and seems to help them to blend with the rust-coloured likens that grows in the background.
Tubercles: Low, often squashed, rhomboid and arranged in spiral, of 8 to 10 mm of diameter.
Areoles: Dimorphic, with white felt and spines in the superior part, some times with furrows.
Central spines: 1 turgid black, or whitish with a black tip 4 to 5 mm in length.
Radial spines: 7 to 8 radial spines of the same colour of 5-10mm of length.
Flowers: Diurnal, funnel-shaped yellow 2 to 3 cm long , and 2, 5-3 (5) cm of diameter in the spring or summer, arises from the base of the areoles of superior tubercles, They last a couple of days. It is an auto-fertile plant.
Fruit: Globular, slightly extendended, dry when mature, reddish, of about 5 mm of diameter, conserves adhered rest of perianth, indehiscent.
Seed: Almost spherical, brown blacks 1.2 mm in length and 0.9 mm wide, of a shining black colour.
Root: Fibrous.

Notes: Ortegocactusis a genus closely related to Mammillaria. The "macdougalli"is the sole species of the genus Ortegocactus(monospecific). Recent philogenetic studies on of the DNA locate the Ortegocactus between Neolloydia and Coryphantha.

Bibliography: Major references and further lectures
1) Goettsch, B.K. 2013. Ortegocactus macdougallii. In: IUCN 2013. "IUCN Red List of Threatened Species." Version 2013.2. . Downloaded on 16 February 2014.
2) Edward Anderson “The Cactus family” Timber Press, Incorporated, 2001
3) James Cullen, Sabina G. Knees, H. Suzanne Cubey "The European Garden Flora Flowering Plants: A Manual for the Identification of Plants Cultivated in Europe, Both Out-of-Doors and Under Glass" Cambridge University Press, 11/Aug/2011
4) David R Hunt Nigel P Taylor Graham Charles International Cactaceae Systematics Group. "The New Cactus Lexicon" dh books, 2006


Escobaria macdougallii (Ortegocactus macdougallii) Photo by: Valentino Vallicelli
In habitat, Mexico. (Ortegocactus macdougallii) Photo by: Agócs György
Escobaria macdougallii (Ortegocactus macdougallii) Photo by: Valentino Vallicelli
Escobaria macdougallii (Ortegocactus macdougallii) Photo by: Prof. Ilham Alakbarov
Ortegopuntia cv. PERCY. Ortegogactus skin on Opuntia body. ( chimaera involving Ortegocactus macdougalli and Opuntia humifusa) (Ortegocactus macdougallii) Photo by: Valentino Vallicelli
Escobaria macdougallii (Ortegocactus macdougallii) Photo by: Cactus Art
Escobaria macdougallii (Ortegocactus macdougallii) Photo by: Cactus Art
Escobaria macdougallii (Ortegocactus macdougallii) Photo by: Cactus Art

Cultivation and Propagation: Not the easiest of plants to grow well and tricky to grow when on its own roots, this interesting and distinctive looking plant needs a little care with regard to heat and water. It show a distinct intolerance to over watering either by rotting off, or by bursting of the epidermis. Composts should therefore be very open and gritty, use shallow pots, with good drainage.. To prevent growing a monster totally out of proportion to their attractive and natural form, one should limit the fertiliser.
A harmless but unsightly orange discoloration (corkiness) is common at the base of the stems, though this is not due to disease, and apparently is unavoidable, cautious examination should periodically be undertaken to ensure that rot has not set in Re-rooting is not easy.
Propagation: Very slow from seed. Many authors recommend grafting, first on Pereskiopsis and soon on Myrtillocactus geometrizans. If it does not reject the stock, it is possible to be cultivated without problems. If we prefer to cultivate it on its own roots, we can maintain intact its characteristics without deformities, grafted plants clump readily and the offsets can be used for make cuttings.


Watch the video: Micro injerto en Pereskiopsis MÉTODO DEL VASO