Echinocactus droegeanus

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Since 4 Aug 2013

Echinocactus droegeanus Hildm. ex K.Schum.
Gesamtbeschr. Kakt. 438 (1898).
Family: CACTACEAE

= Thelocactus hexaedrophorus var. droegeanus (Hildm. ex K.Schum.) Pilbeam
Thelocactus (Cactus File Handbook, 1) 29 (1996) Basionym not stated. (Hildm.ex K.Schum.)

Accepted Scientific Name: Thelocactus hexaedrophorus (Lem.) Britton & Rose
Bull. Torrey Bot. Club 1922, xlix. 251

Echinocactus droegeanus (Thelocactus hexaedrophorus var. droegeanus) Photo by: Peiffer Clement

Origin and Habitat: Thelocactus hexaedrophorusSN|10830]]SN|10830]] var. droegeanus, according to Glass and Foster (1977) grows near La Bonita, south of Matehulla in San Luis Potosi, Mexico.

Synonyms:

Thelocactus hexaedrophorus var. droegeanus (Hildm. ex K.Schum.) Pilbeam

Echinocactus droegeanus Hildm. ex K.Schum.
Echinocactus hexaedrophorus var. droegeanus Schelle

See all synonyms of Thelocactus hexaedrophorus

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Accepted name in llifle Database:
Thelocactus hexaedrophorus (Lem.) Britton & Rose
Bull. Torrey Bot. Club 1922, xlix. 251
Synonymy: 26

Thelocactus hexaedrophorus (Lem.) Britton & Rose

Echinocactus hexaedrophorus Lem.
Thelomastus hexaedrophorus (Lem.) Frič in Kreuz.

Echinocactus hexaedrophorus roseus Lem.
Thelocactus hexaedrophorus var. decipiens (A.Berger) Pilbeam

Echinocactus hexaedrophorus var. decipiens A.Berger

Thelocactus hexaedrophorus var. droegeanus (Hildm. ex K.Schum.) Pilbeam

Echinocactus droegeanus Hildm. ex K.Schum.
Echinocactus hexaedrophorus var. droegeanus Schelle

Thelocactus hexaedrophorus var. fossulatus (Scheidw.) Backeb.

Echinocactus fossulatus Scheidw. in Otto & A.Dietr.
Echinocactus hexaedrophorus var. fossulatus (Scheidw.) Salm-Dyck ex Labour.
Echinocactus hexaedrophorus f. fossulatus (Scheidw.) Voss in Vilm.
Thelocactus fossulatus Britton & Rose

Thelocactus hexaedrophorus subs. franci Halda & Sladk.
Thelocactus hexaedrophorus subs. jarmilae Halda & Chvastek
Thelocactus hexaedrophorus subs. kvetae Chvastek & Halda
Thelocactus hexaedrophorus var. labouretianus (K.Schum.) Pilbeam

Echinocactus hexaedrophorus var. labouretianus K.Schum.
Echinocactus hexaedrophorus f. labouretianus (K.Schum.) Schelle
Echinocactus labouretianus Cels ex K.Schum.

Thelocactus hexaedrophorus var. major (Quehl) Y.Itô

Echinocactus hexaedrophorus var. major Quehl
Echinocactus hexaedrophorus f. major (Quehl) Schelle
Thelomastus hexaedrophorus major (Quehl) Frič in Kreuz.

Thelocactus hexaedrophorus var. paradensis Pilbeam

Accepted name in llifle Database:
Thelocactus hexaedrophorus subs. lloydii (Britton & Rose) N.P.Taylor
Cactaceae Consensus Init. 5: 14. 1998
Synonymy: 5

Thelocactus hexaedrophorus subs. lloydii (Britton & Rose) N.P.Taylor

Thelocactus hexaedrophorus var. lloydii (Britton & Rose) Kladiwa & Fittkau
Thelocactus lloydii Britton & Rose

Thelocactus hexaedrophorus subs. lloydii f. major

Thelocactus lloydii var. major

Cultivars (2):

Thelocactus lloydii cv. monstruosus

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Description: Thelocactus hexaedrophorusSN|10830]]SN|10830]] var. droegeanus is one of the controversial geographical or morphological form of Thelocactus hexaedrophorusSN|10830]]SN|10830]]. Many variant of Thelocactus hexaedrophorusSN|10830]]SN|10830]] was early classified as different independent species or varieties, but nowadays all this plants are considered part of a multiform species, where each form is linked to others by populations of plants with intermediate characteristics. The name Thelocactus hexaedrophorusSN|10830]]SN|10830]] var. droegeanus was used to designate plants with ash-grey compressed tubercles. This variety, according to Glass and Foster (1977) grows near La Bonita, south of Matehulla in San Luis Potosi, have short spines and small flowers.

Subspecies, varieties, forms and cultivars of plants belonging to the Thelocactus exaedrophorus group

Thelocactus hexaedrophorus (Lem.) Britton & Rose: (subsp. hexaedrophorus) has hemispheric tubercles, 0-1 reddish central spine, 4-6 reddish radials, and flowers 4-5.5 cm Ø. Distribution: widespread in San Luis Potosi, Tamaulipas, and Nuevo Leon.
Thelocactus hexaedrophorus var. droegeanus (Hildm. ex K.Schum.) Pilbeam: has ash-grey compressed, closely packaged tubercles, shorter spines and small flowers. Distribution: La Bonita, south of Matehulla in San Luis Potosi.
Thelocactus hexaedrophorus var. fossulatus (Scheidw.) Backeb.: Usually solitary, clustering only after many years, from the base It has 1 red central spine and 4-6 reddish-gray-white radial spines per areole They are thick, long and sharp.
Thelocactus hexaedrophorus var. fossulatus cv. Long spines (Japan) (Scheidw.) Backeb.: Selected cultivar immediately distinguished from the other Thelocacti of this grou for the very strong, long and colourful spines.
Thelocactus hexaedrophorus subs. kvetae Chvastek & Halda: has flattened discoidal bodies, bright purple-pink coloured flowers and larger seeds. Distribution: Central Mexico, San Luis Potosi [near Rio Verde].
Thelocactus hexaedrophorus var. labouretianus (K.Schum.) Pilbeam: grey stems, white pink flowers, and nice spination. At first the plants have larger tubercles that may become closely packaged as the plant gets older.
Thelocactus hexaedrophorus subs. lloydii (Britton & Rose) N.P.Taylor: has delta-shaped tubercles, 1-3 reddish central spines, 6-8 reddish white to brownish radials, and flowers 3,3-3,6 cm Ø. Distribution: Zacatecas.
Thelocactus hexaedrophorus subs. lloydii f. major: has very long ( up to 8 cm long) central spines, more numerous (6-8) radials, and pure white flower. Distribution: San Luis Potosí and Nuevo Leon.
Thelocactus hexaedrophorus subs. lloydii cv. monstruosus: has firm, rubbery-textured glaucous green stems, the surface is naked or with few scattered spine clustes.
Thelocactus hexaedrophorus var. paradensis Pilbeam: It is a white flowering form of Thelocactus hexaedrophorus subs. lloydii. It is known in cultivation only.

Bibliography: Major references and further lectures
1) Curt Backeberg. “Die Cactaceae” Volume V. Gustav Fischer Verlag. Jena, 1961
2) Berger "Kakteen", p. 253. 1929
3) Pilbeam in “Thelocactus (Cactus File Handbook, 1)” p. 29. 1996
4) Echinocactus hexaedrophorus var. droegeanus in: Schelle in “Handb. Kakteenkult”. 199. 1907
5) ????????? ?????. ??? “??????????”
6) Thelocactus hexaedrophorus var. droegeanus (Hildm. ex K. Schum. 1907) Berger 1929 in Cactus Love web: http://www.cactuslove.ru/vid.php?vidid=1369
7) Nathaniel Lord Britton, Joseph Nelson Rose “Cactaceae: Descriptions and Illustrations of Plants of the Cactus Family” volume 4, 1923

Echinocactus droegeanus (Thelocactus hexaedrophorus var. droegeanus) Photo by: Peiffer Clement

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Cultivation and Propagation: Easy to cultivate. Water moderately from Spring to Autumn. In Winter, keep dry.
Sun Exposure: Full sun to light shade
Reproduction: Nearly always from seed, since the plant rarely produces plantlets.

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