Mammillaria magallani var. hamatispina

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Since 4 Aug 2013

Mammillaria magallani var. hamatispina Backeb.
Cactaceae (Backeberg) 6:3881-3882.1962; var. nov.
Family: CACTACEAE

Accepted Scientific Name: Mammillaria lasiacantha subs. magallanii (F.Schmoll ex R.T.Craig) D.R.Hunt
Mammillaria Postscripts 6: 7 (1997)

Mammillaria magallani var. hamatispina Photo by: Valentino Vallicelli

Origin and Habitat: Municipio de Parras de la Fuente, Coahuila (Towards Saltillo).
Habitat: Between rock among xerophyte vegetation at 1300 m of altitude. In a very small population with not more than 1 or 2 specimens per 10 square meters.

Synonyms:

Mammillaria magallani var. hamatispina Backeb.

See all synonyms of Mammillaria lasiacantha

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Accepted name in llifle Database:
Mammillaria lasiacantha Engelm.
Proc. Amer. Acad. Arts 3: 261. 1856 Syn. Cact. 5
Synonymy: 22

Mammillaria lasiacantha Engelm.

Cactus lasiacanthus (Engelm.) Kuntze
Chilita lasiacantha (Engelm.) Orcutt
Ebnerella lasiacantha (Engelm.) Buxb.
Escobariopsis lasiacantha (Engelm.) Doweld
Neomammillaria lasiacantha (Engelm.) Britton & Rose

Mammillaria lasiacantha var. denudata Engelm.

Cactus lasiacanthus var. denudatus (Engelm.) J.M.Coult.
Chilita denudata (Engelm.) Orcutt
Ebnerella denudata (Engelm.) Buxb.
Mammillaria denudata (Engelm.) A.Berger
Mammillaria lasiacantha f. denudata (Engelm.) Schelle
Neomammillaria denudata

Mammillaria lasiacantha f. wohlschlageri (Repp.) Hoeve

Escobariopsis lasiacantha subs. wohlschlageri (Repp.) Doweld
Mammillaria wohlschlageri Repp.

Mammillaria lengdobleriana Boed.

Chilita lengdobleriana (Boed.) Buxb.

Mammillaria neobertrandiana Backeb.
Mammillaria roemeri Wolfg.Krüger & W.Rischer
Mammillaria sp. f. cristata SB500 Cuatrocienagas, Coahuila, Mexico
Mammillaria sp. SB500 Cuatrocienagas, Coahuila, Mexico hort., S.Brack

Accepted name in llifle Database:
Mammillaria lasiacantha subs. egregia (Backeb. ex Rogoz. & Appenz.) D.R.Hunt
Mammillaria Postscripts 7: 3 (1998)
Synonymy: 8

Mammillaria lasiacantha subs. egregia (Backeb. ex Rogoz. & Appenz.) D.R.Hunt

Escobariopsis lasiacantha subs. egregia (Backeb. ex Rogoz. & Appenz.) Doweld
Mammillaria egregia Backeb. ex Rogoz. & Appenz.
Mammillaria stella-de-tacubaya subs. egregia (Backeb. ex Rogoz. & Appenz.) Appenz. & Lizen
Mammillaria stella-de-tacubaya var. egregia (Backeb. ex Rogoz. & Appenz.) Rogoz. & Plein
Neomammillaria egregia (Backeb.) Y.Itô

Mammillaria lasiacantha subs. egregia f. cristata hort.

Mammillaria egregia f. cristata

Accepted name in llifle Database:
Mammillaria lasiacantha subs. hyalina D.R.Hunt
Mammillaria Postscripts 6: 6 (1997), nom. nov. (replaced synonym:Cactaceae Mammillaria wohlschlageri Repp. 1989)

Accepted name in llifle Database:
Mammillaria lasiacantha subs. magallanii (F.Schmoll ex R.T.Craig) D.R.Hunt
Mammillaria Postscripts 6: 7 (1997)
Synonymy: 10

Mammillaria lasiacantha subs. magallanii (F.Schmoll ex R.T.Craig) D.R.Hunt

Chilita х magallanii (F.Schmoll ex R.T.Craig) Buxb.
Ebnerella х magallanii (F.Schmoll ex R.T.Craig) Buxb.
Escobariopsis lasiacantha subs. magallanii (F.Schmoll ex R.T.Craig) Doweld
Mammillaria lasiacantha f. magallanii (F.Schmoll ex R.T.Craig) W.A.Fitz Maur. & B.Fitz Maur.
Mammillaria magallanii F.Schmoll ex R.T.Craig
Neomammillaria х magallanii (F.Schmoll ex R.T.Craig) Y.Itô

Mammillaria magallani var. hamatispina Backeb.
Mammillaria roseocentra Boed. & F.Ritter

Mammillaria magallanii var. roseocentra (Boed. & F.Ritter) Lizen

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Description: Mammillaria magallani var. hamatispina is a controversial tiny solitary cactus with hooked central spines in immature seedlings, but often with no central spines in the mature specimens. It is part of a controversial group of related species (Mammillaria gasserianaSN|9075]]SN|9179]], Mammillaria stella-de-tacubayaSN|25133]]SN|9381]], Mammillaria chicaSN|9381]]SN|25133]], Mammillaria lasiacanthaSN|9179]]SN|9075]], Mammillaria magallani, magallani hamatispina... etc) hard to name accurately without knowing where they come from, and there remains a considerable confusion surrounding the true identity of this this plant. Whatever view one adopts, it is worth a place in every Mammillaria collection.
Stem: Cylindrical, dark green, 5 cm in diameter and up to 7 cm tall.
Tubercles: Cylindrical 5 mm long 2 mm in diameter evenly disposed. Axil with white-yellowish wool.
Radial spines: 50-70 short, sharp, creamy-yellowish 3 mm long.
Central spines: (0-)1(-3) hooked usually present in the seedling stage, 3-5 (or more) mm long, yellow-orangish with a darker coffee coloured tip. Adult specimens usually have only pure radial spines.
Flowers: Creamy coloured 10 mm long, 6 mm across.
Fruit: Bright red about 10 mm long and 3 mm in diameter.
Seeds: Circular, black, 2 mm in diameter, 1 mm thick.

Subspecies, varieties, forms and cultivars of plants belonging to the Mammillaria lasiacantha group

Mammillaria lasiacantha Engelm.: Single or forming Small clusters of 2 or 3 heads. Stems are spherical usually less than 5 cm in diameter. They usually have soft glabrous spines, but in some populations all plants may retain plumose spines at maturity.
Mammillaria lasiacantha var. denudata Engelm.: has always glabrous spines. For all other characteristics it is comparable to the standard Mammillaria lasiacantha. Distribution: Big Bend National Park (Brewster County), Texas.
Mammillaria lasiacantha subs. egregia (Backeb. ex Rogoz. & Appenz.) D.R.Hunt: It forms small snow-white ball, usually unbranched, deep-seated in substrate and inconspicuous that become somewhat cylindrical with age up to 5 cm in diameter × 2-7 cm tall.
Mammillaria lasiacantha subs. egregia f. cristata hort.: crested form. It will slowly forms white tangled groups up to 10 cm in diameter.
Mammillaria lasiacantha subs. hyalina D.R.Hunt
Mammillaria lasiacantha subs. magallanii (F.Schmoll ex R.T.Craig) D.R.Hunt: Small usually solitary slow growing species with short white spines. Stems globose to club shaped, green, up to 6 cm tall and 4.5 cm in diameter. Distribution: Coahuila and Durango.
Mammillaria lasiacantha f. wohlschlageri (Repp.) Hoeve: Small plants with a flat fuzzy stem and creamy flowers blooming abundantly in late winter-to early spring. Radial spiness 26-36, glassy white, brown tipped, 2 - 6 mm long.
Mammillaria magallani var. hamatispina Backeb.: 50-70 creamy-yellowish radial spines with one hooked darker central spine.
Mammillaria neobertrandiana Backeb.: Nice pink spines, the small winter flowers are pale pink with a pink/brown midstripe. Distribution: Lerdo, Durango.
Mammillaria roemeri Wolfg.Krüger & W.Rischer: It is a neotonic (juvenile form which remains so) form of Mammillaria lasiacantha. The flower position and its later flowering distinguish it, as well as the spination. It looks different, but clearly related.
Mammillaria roseocentra Boed. & F.Ritter: radial spines numerous, in two rows, short, especially the inside one, initially beautiful pink, at the apex almost red: Distribution: Durango and Lerdo, Mexico
Mammillaria sp. f. cristata SB500 Cuatrocienagas, Coahuila, Mexico: is a tiny crest form that may retain plumose spines at maturity.It slowly forms tangled groups up to 20 cm in diameter.
Mammillaria sp. SB500 Cuatrocienagas, Coahuila, Mexico hort., S.Brack: (M. lasiacantha) Feathery form with tiny stems that resemble golf balls.

Bibliography: Major references and further lectures
1) David Hunt, Nigel Taylor “The New Cactus Lexicon” DH Books, 2006 ISBN 0953813444, 9780953813445
2) John Pilbeam (1999) “Mammillaria The Cactus File Handbook” Nuffield Press. ISBN 10: 0952830280
Nathaniel Lord Britton, Joseph Nelson Rose “Cactaceae: Descriptions and Illustrations of Plants of the Cactus Family” Courier Dover Publications, 1963
3) Edward F. Anderson “The Cactus Family” Timber Press, 2001
4) 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

Mammillaria magallani var. hamatispina Photo by: Valentino Vallicelli

Mammillaria magallani var. hamatispina Photo by: Valentino Vallicelli

Mammillaria magallani var. hamatispina Photo by: Valentino Vallicelli

Mammillaria magallani var. hamatispina Photo by: Valentino Vallicelli

Cultivation and Propagation: This plant has not the fame to be easy to cultivate, but in good conditions with excellent ventilation, it grows without difficulty. It is especially sensitive to overwatering. So careful watering and an open mineral potting soil are a must. Avoid the use of peat or other humus sources in the potting mixture. Don't add limestone to the potting mix which must be moderately acidic. Can be sensitive to frost (but if dry they are resistant to -5° C). Requires maximum sun exposure to reach its full potential and to achieve success in flowering. A winter rest that allows the plant to shrivel (perhaps losing up to 25% of its summer height) will encourage flowering and long time survival. Be careful to encourage slow growth. Provide very good ventilation.
Propagation: Direct sow after last frost. (it usually doesn't produces offsets).

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