Ferocactus macrodiscus

Ferocactus macrodiscus

Succulentopedia

Ferocactus macrodiscus

Ferocactus macrodiscus is a barrel cactus that forms a solitary, blue-green stem with up to 35 pronounced vertical ribs. Spines are yellow…


Ferocactus

Family: Cactaceae (kak-TAY-see-ee) (Info)
Genus: Ferocactus (fer-oh-KAK-tus) (Info)
Species: macrodiscus subsp. septentrionalis
Synonym:Ferocactus macrodiscus var. septentrionalis
Synonym:Bisnaga macrodiscus subsp. septentrionalis

Category:

Water Requirements:

Drought-tolerant suitable for xeriscaping

Sun Exposure:

Foliage:

Foliage Color:

Height:

Spacing:

Hardiness:

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:

Can be grown as an annual

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

Gardeners' Notes:

On Apr 19, 2005, Xenomorf from Phoenix, AZ (Zone 9b) wrote:

The 'macrodiscus' subspecies has a blue-green epidermis and areoles 1/5th to 1/3rd of an inch long. The spines are yellow or red and curved. It is the most prevalent.
The 'septentrionalis' has a greenish-yellow epidermis and the areoles are 1/2 to 1 inch long. The spines are straight and strong.


Ferocactus macrodiscus

Regular price $ 8.75 Save -13%

Ferocactus macrodiscus

(This plant comes in a 3.5" pot. You will receive a very similar plant to the one in the picture. It may or may not be blooming at the time of your purchase. The plant is shipped in its pot to prevent any damage to the roots).

Origin and habitat: Ferocactus macrodiscus is endemic to Mexico.

Cultivation: Slow growing to start, but it does well under cultivation. Grow it in full sun throughout the year. In winter keep completely dry at 10°C, but it can tolerate sporadic light frost. Unlike other Ferocacti that flowers only as large adult, Ferocactus macrodiscus will flower at a reasonable size in a small pot in a glasshouse

Some of the information in this description has been found at desert-tropicals.com, llifle.com and cactus-art.biz

(This plant comes in a 3.5" pot. You will receive a very similar plant to the one in the picture. It may or may not be blooming at the time of your purchase. The plant is shipped in its pot to prevent any damage to the roots).

Origin and habitat: Ferocactus macrodiscus is endemic to Mexico.

Cultivation: Slow growing to start, but it does well under cultivation. Grow it in full sun throughout the year. In winter keep completely dry at 10°C, but it can tolerate sporadic light frost. Unlike other Ferocacti that flowers only as large adult, Ferocactus macrodiscus will flower at a reasonable size in a small pot in a glasshouse


Ferocactus macrodiscus - garden

Origin and Habitat:Ferocactus macrodiscus is endemic to Mexico, and is distributed in the states of Guanajuato and Oaxaca, and has a disjunct distribution. Anderson (2001) and Arias et al. (1997) report it also from from Querétaro and San Luis Potosí (extent of occurrence (Mart.) Britton & Rose

  • Bisnaga macrodisca (Mart.) Doweld
  • Echinocactus macrodiscus Mart.

Description: Ferocactus macrodiscus is a medium sized barrel cactus with a depressed-globose stem and blue-green epidermis. Growth from seed is quite rapid and plants will flower when only a few cm across. Flowers are white with pinkish-purple striped petals. Two subspecies are recognized, the nominate form and subsp. septentrionalis (J.Meyrán) N.P.Taylor.
Stem: Solitary, flat, depressed-globose, or disc-shaped up to 10 cm tall and 30-45 cm in diameter (but up to nearly 60 in some cases).
Ribs: (13-)16 to 21(-35), somewhat flattened, sometimes acute on the margin, somewhat depressed at the distant areoles.
Areoles: 5 to 10 mm long with yellow felt sunken in notches in the ribs.
Spines: Yellow or red and curved.
Central spines: 1 to 4 (of which one longer and pointing downward), up to 3,5 cm long, stouter and flatter than the radials, often banded.
Radial spines: 6 to 8, more or less curved backward, 2-3 cm long.
Flowers: Obconic,, 3-4(-5) cm long and about 3-4 cm in diameter. Inner perianth-segments linear-oblong, acute bright purple/pink with pale margins. Stamens and style included.
Blooming season: Spring to summer. In habitat it flowers between April and July.
Blooming season: From early spring into summer.
Fruits: Nearly spherical, to 4 x 3 cm, red.
Seeds: To 2 mm, dark brown, finely pitted.
Similar species. Ferocactus macrodiscus closely reminds > which has dense wool in the axils of the scales of the ovary, and the seeds are large and smooth, on the contrary the ovary of Ferocactus macrodiscus has naked axils of the scales and the seeds are smaller and pitted. In spite of these and other differences, F. macrodiscus appears to be nearly as closely related to Homalocephala texensis and F. macrodiscus may represent transitional forms between Ferocactus and Echinocactus, although Homalocephala is generally considered to be a side development from Echinocactus.

Subspecies, varieties, forms and cultivars of plants belonging to the Ferocactus macrodiscus group

  • Ferocactus macrodiscus" href='/Encyclopedia/CACTI/Family/Cactaceae/4317/Ferocactus_macrodiscus'> Ferocactus macrodiscus (Mart.) Britton & Rose : The 'macrodiscus'subspecies has a blue-green epidermis and areoles 0,5 to 1 cm long. The spines are yellow or red and curved. It is the most prevalent.
  • Ferocactus macrodiscus var. septentrionalis J.Meyran : The 'septentrionalis' subspecies has a greenish-yellow epidermis and the areoles are 1,5 to 2,5 cm long. The spines are straight and strong.

Bibliography: Major references and further lectures
1) Sánchez , E., Bárcenas Luna, R., Hernández, H.M., Gómez-Hinostrosa, C. & Cházaro, M. 2013. Ferocactus macrodiscus. The IUCN Red List of Threatened Species 2013: e.T152288A619356. http://dx.doi.org/10.2305/IUCN.UK.2013-1.RLTS.T152288A619356.en. Downloaded on 25 April 2016.
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
5) N. L. Britton, J. N. Rose “The Cactaceae. Descriptions and Illustrations of Plants of the Cactus Family.” Volume 4, The Carnegie Institution of Washington, Washington 1923
6) Arias, M.S., Gama, S. and Guzmán, U. “Flora del Valle de Tehuacán-Cuicatlán”. Fasículo 14. Cactaceae A.L. Juss. Instituto de Biología, UNAM, Mexico. 1997
7) Hernández, H. and Godínez, H. “Contribución al conocimiento de cactáceas mexicanas amenazadas.” Acta Botánica Mexicana 26: 33-52.1994
8) Hernández, H.M., Gómez-Hinostrosa, C. and Goettsch, B. “Checklist of Chihuahuan Desert Cactaceae.” Harvard Papers in Botany 9(1): 51-68. 2004
9) George Edmund Lindsay, J. Hugo Cota “The taxonomy and ecology of the genus Ferocactus: explorations in the USA and Mexico” Tireless Termites Press, 1996
10) Kakteen and andere Sukkulenten 29: 65-6, f. 1-5 (1978)
11) Bradleya 2: 26 (1984)
12) Hiroshi Hirao “Colour encyclopaedia of cacti” Japan 1979 (Japanese language and script)


Ferocactus macrodiscus Photo by: Valentino Vallicelli
- Unusual in Collections it starts blooming when the plant has only a diameter of 8-12 cm. In its habitat it passes the dry periods almost buried in the ground. Photo by: Andrea B.
Ferocactus macrodiscus Photo by: Agócs György
Ferocactus macrodiscus Photo by: Cactus Art

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