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P 282 (Collector Jörg and Brigitte Piltz) Mexico, Coahuila, (Sierra Paila)
Origin and Habitat: Mexico, Coahuila, (Sierra Paila)?
Habitat and ecology: The habitat is only a guess because it is not documented.
- Echinocereus pailanus Fritz Schwarz ex Backeb.
Description: Echinocereus pailanus (Cites: Echinocereus reichenbachii ssp. reichenbachii) is a nomen nudun (an avowed new name unaccompanied by a description or diagnosis) sometimes encountered in European nurseries. The name is actually invalid. It is used to indicate an intermediate form between Echinocereus reichenbachii and Echinocereus pectinatus. The taxonomic and geographic boundaries among this two species remain nebulous and controversial. Echinocereus pailanus distinguishes for its fine-textured pinkish-red or pink-brown pectinated spines. It is one of the finest cactus that is very pretty any time of the year, but when it blooms, that is truly a sight to see.
Note: The name does not exist in the international databases Http://www.ipni.org/ipni/plantnamesearchpage.do and Http://www.theplantlist.org/
Subspecies, varieties, forms and cultivars of plants belonging to the Echinocereus reichenbachii group
- Echinocereus baileyi var. brunispinus Backeb.: No central spine with brown, intelacing, bristly, radials spines. Distribution: Oklahoma.
- Echinocereus melanocentrus J. Lowry: same as: Echinocereus reichenbachii subs. fitchii
- Echinocereus oklahomensis Lahman: It is one of the local forms of Echinocereus reichenbachii subs. baileyi distinguished by having 20-24 radial spines only 2 cm long and 0-2 centrals. Distribution: south-west Oklahoma.
- Echinocereus pailanus Fritz Schwarz ex Backeb.: has fine-textured pinkish-red or pink-brown pectinated spines. distribution Coahuila, (Sierra Paila)?
- Echinocereus reichenbachii (Terscheck ex Walp.) Haage jr. ex Britton & Rose: Small solitary or slowly branching cylindrical shaped cactus.It has 20 to 36, white to tan pectinatd radial spines held closely against the the ribs of the stems, organized in 2 series. Central spines usually absent.
- Echinocereus reichenbachii var. albertii L.D.Benson: This cactus has large, pretty pink flowers with a very dark center. It has dark cental spines 0, or 1, 2 to 3 mm long, purple-black in colour. The 14 to 20 radial spines are white with dark purple tips number, straight, closely pectinate, 3 to 6 mm long.
- Echinocereus reichenbachii var. albispinus (Lahman) L.D.Benson: This is a form of Echinocereus baileyi with white to delicately pinkish spines, up to 1-2 cm long.
- Echinocereus reichenbachii f. albispinus hort. non Lahman: It is intermediates between Echinocereus baileyi and Echinocereus reichenbachii subsp. caespitosus. It has white neat comb-like short spination. It is one of the smaller Echinocereus species.
- Echinocereus reichenbachii subs. armatus (Poselg. ex Engelm.) N.P.Taylor: This cactus has large, pretty pink flowers with a clearer often greenish center. It has 1 or 2 sharpen, light brown, darkly tipped spines.
- Echinocereus reichenbachii subs. baileyi (Rose) N.P.Taylor: No central spine with about 16 intelacing radials spines, that are bristly spreading and variously coloured, white, yellowish, fox red, brown or pink. Distribution: Oklahoma, Texas.
- Echinocereus reichenbachii f. brevispinum hort.: short spined form.
- Echinocereus reichenbachii subs. caespitosus (Engelm.) W.Blum & Mich.Lange in W.Blum et al.: The so called "caespitosus" is the form found in central Texas. Usually this plants lack central spines and are weakly distinguished from typical "reichenbachii".
- Echinocereus reichenbachii var. castaneus (Engelm.) nov. comb. ined.
- Echinocereus reichenbachii f. cristatus hort.: Crested form.
- Echinocereus reichenbachii subs. fitchii (Britton & Rose) N.P.Taylor: has brown central spines, much longer than white radials and large flower, slightly scented, pink-purple with dark burgundy centre. Distribution: Starr, Webb, and Zapadta Co., Texas
- Echinocereus reichenbachii subs. perbellus (Britton & Rose) N.P.Taylor: It has 0-1 central spine, fewer than 20 radials, and elliptic areoles; Range: Colorado, New Mexico, and central Texas.
- Echinocereus reichenbachii var. purpureus (Lahman) D.Parker: intermediate between Echinocereus baileyi and Echinocereus caespitosus, has reddish neat comb-like spines with bright purple flowers. Distribution: Oklhoma
Bibliography: Major references and further lectures
1) Echinocereus pailanus in: Cacti collection-Holzheu http://www.kakteensammlung-holzheu.de/en/echinocereus_pailanus.html
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