Echinocereus scheeri

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Echinocereus scheeri
Echinocereus scheeri var obscuriensis 02.jpg
In bloom
Echinocereus scheeri (9322654148).jpg
A specimen with pink petals
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Caryophyllales
Family: Cactaceae
Subfamily: Cactoideae
Genus: Echinocereus
Species:
E. scheeri
Binomial name
Echinocereus scheeri
Synonyms [2]
List
    • Cereus salm-dyckianusHemsl.
    • Cereus scheeriSalm-Dyck
    • Echinocereus chaletiiW.Rischer
    • Echinocereus cucumisWerderm.
    • Echinocereus gentryiClover
    • Echinocereus klapperiW.Blum
    • Echinocereus rischeri(R.C.Römer) W.Rischer
    • Echinocereus salmianusK.Schum.
    • Echinocereus sanpedroensisRaudonat & W.Rischer
    • Echinocereus scheeri subsp. paridensisW.Rischer & Trocha
    • Echinocereus scheeri subsp. rischeriR.C.Römer

Echinocereus scheeri is a species of hedgehog cactus in the family Cactaceae, native to northern Mexico. [2] With its dramatic offsets, it has gained the Royal Horticultural Society's Award of Garden Merit. [3]

Contents

Description

Echinocereus scheeri usually grows with numerous shoots sprouting from its base and sometimes forms upright but usually splayed or creeping groups. The cylindrical shoots are tapered towards their tip. They are 10 to 70 cm (3.9 to 27.6 in) long and have a diameter of 1.5 to 4 cm (0.59 to 1.57 in). There are four to ten clearly blunt ribs, which are straight and occasionally tuberous on their sides. The up to four white to brownish central spines, which can also be missing, are 0.1 to 2 cm (0.039 to 0.787 in) long. The usually 6 to 13 white to light brown radial spines are 1 to 7 mm (0.039 to 0.276 in) long.

The tubular-funnel-shaped flowers are pink to orange to scarlet. They appear along the sides of the shoots from sharply pointed buds, are 6 to 12 cm (2.4 to 4.7 in) long and reach 4 to 6 cm (1.6 to 2.4 in) in diameter. The short egg-shaped fruits are bright green and contain white pulp. They tear open lengthwise and are covered with slightly sloping thorns. [4] Chromosome count is 2n=22. [5]

Subspecies

The following subspecies are currently accepted: [2]

ImageSubspeciesDistribution
Echinocereus scheeri subsp. chaletii(W.Rischer) N.P.TaylorChihuahua
Echinocereus scheeri subsp. cucumis(Werderm.) W.Blum & OldachSonora
Echinocereus scheeri var. gentryi (4799860261).jpg Echinocereus scheeri subsp. gentryi(Clover) N.P.Tayloreastern Sonora to western Chihuahua
Echinocereus scheeri Blute.JPG Echinocereus scheeri subsp. scheeriE. Sonora to W. Durango

Distribution

Echinocereus scheeri is distributed in the Mexican states of Sonora, Sinaloa, Chihuahua and Durango.

Taxonomy

The first description as Cereus scheeri by Joseph zu Salm-Reifferscheidt-Dyck was published in 1850. The specific epithet scheeri honors the German trader and plant lover Frederick Scheer. Frederick Scheer placed the species in the genus Echinocereus in 1856

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References

  1. ↑ "The IUCN Red List of Threatened Species". IUCN Red List of Threatened Species. 2010-05-11. Retrieved 2023-11-23.
  2. 1 2 3 "Echinocereus scheeri (Salm-Dyck) Scheer". Plants of the World Online. Board of Trustees of the Royal Botanic Gardens, Kew. Retrieved 3 April 2021.
  3. ↑ "Echinocereus scheeri". The Royal Horticultural Society. Retrieved 3 April 2021.
  4. ↑ Anderson, Edward F.; Eggli, Urs (2005). Das grosse Kakteen-Lexikon (in German). Stuttgart (Hohenheim): Ulmer. pp. 207–208. ISBN   3-8001-4573-1.
  5. ↑ "Echinocereus Online-J. VI (2018)" (PDF). Retrieved 2024-07-29.
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