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== Habitat ==
== Habitat ==
Its original habitat is Southern Brazil, [[Uruguay]], and province of [[Entre Ríos Province]], Argentina.
''Echinopsis eyriesii''<nowiki/>'s original habitat is Southern Brazil, [[Uruguay]], and province of [[Entre Ríos Province]], Argentina.
It grows in grassy plains or in low hills in lowland up to 1,000 metres above sea level. The climate is tropical, continental. Winters are completely dry, while in summer the landscape is flooded by torrential rain and soaked with water. Rainfall up to 1500 mm by year. Average annual temperature 25–30 °C. The temperature rarely drops below zero degrees even if the landscape is open to the cold south [[Pampero (wind)|pampero]] winds.<ref name="llifle">{{Cite web | url=http://www.llifle.com/Encyclopedia/CACTI/Family/Cactaceae/8004/Echinopsis_eyriesii |title = Echinopsis eyriesii}}</ref>
It grows in lowland up to 1,000 meters above sea level. The climate is tropical, continental. Winters are dry with summer rainy seasons. Precipitation reaches 1500 mm a year with average annual temperature 25–30 °C. <ref name="llifle">{{Cite web | url=http://www.llifle.com/Encyclopedia/CACTI/Family/Cactaceae/8004/Echinopsis_eyriesii |title = Echinopsis eyriesii}}</ref>


== Taxonomy ==
== Taxonomy ==
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''E. eyriesii'' is a very popular large [[caespitose]] cactus, widely grown for the huge nocturnal flowers. It is the best known and most commonly grown globular cactus.
''E. eyriesii'' is a very popular large [[caespitose]] cactus, widely grown for the huge nocturnal flowers. It is the best known and most commonly grown globular cactus.


In favorable conditions and after a long time, it may exceptionally forms large mounds up to 1.5 m tall and 2–3 m wide.
In favorable conditions ''E. eyriseii'' may form mounds up to 1.5 m tall and 2–3 m wide.


It is globular, later elongated and almost cylindrical, 15–30 cm high, 12–15 cm thick, dark green and heavily ribbed (9 to 18). On the ribs, there are circular areoles with very short spines (10 to 18).
It is globular, elongated and approximately cylindrical, 15–30 cm high, 12–15 cm thick. The cactus is dark green and has 9 to 18 ribs. The ribs have circular areoles with 10 to 18 spines.


The flower is very spectacular. The floral stem grows slowly (one month) up to 20 cm long. Then, on a spring or summer evening, the flower (white or light pink) opens with 10–12 cm in diameter. There is a light and delicious smell. It fades the next day, but in cold, rainy weather it may last two, rarely three days.<ref name="llifle" />
The floral stem over the course of a month up to 20 cm long. The flower blooms in the evening of ether spring or summer up to 10–12 cm in diameter. The flower lasts a day, but may last longer in cold or rainy conditions.<ref name="llifle" />


There is a variety without spines: Echinopsis eyriesii var. inermis, sometimes named Echinopsis inermis<ref>{{Cite web|url=http://www.llifle.com/Encyclopedia/CACTI/Family/Cactaceae/25318/Echinopsis_eyriesii_var._inermis|title = Echinopsis eyriesii var. Inermis}}</ref>
Echinopsis eyriesii var. inermis, or Echinopsis inermis, is a spineless variety<ref>{{Cite web|url=http://www.llifle.com/Encyclopedia/CACTI/Family/Cactaceae/25318/Echinopsis_eyriesii_var._inermis|title = Echinopsis eyriesii var. Inermis}}</ref>


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== Cultivation ==
== Cultivation ==
''Echinopsis eyriesii'' is an easy-to-grow plant. It needs a fertile and well drained soil with sunny exposure.
''Echinopsis eyriesii'' needs fertile and well drained soil with full sun.


Water the plants well in summer, but let them dry before watering again. Use then special fertilizer for cacti. In winter keep dry. The temperature may be as low as −7 °C. For flowering in summer, the rest (dry and cold) in winter is necessary.<ref name="llifle" />
Water the plants in summer, allowing the soil to dry between waterings. The cactus should not be watered in winter to allow for blooming. The temperature may be as low as −7 °C. <ref name="llifle" />


== References ==
== References ==

Revision as of 05:00, 16 March 2023

Echinopsis eyriesii
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Caryophyllales
Family: Cactaceae
Subfamily: Cactoideae
Genus: Echinopsis
Species:
E. eyriesii
Binomial name
Echinopsis eyriesii
(Turpin) 1830 Zucc. ex Pfeiff. & Otto
Synonyms
  • Echinopsis eyriesii (Turpin) Pfeiff. & Otto, 1838

Echinopsis eyriesii is a species of cacti of the genus Echinopsis.

Habitat

Echinopsis eyriesii's original habitat is Southern Brazil, Uruguay, and province of Entre Ríos Province, Argentina. It grows in lowland up to 1,000 meters above sea level. The climate is tropical, continental. Winters are dry with summer rainy seasons. Precipitation reaches 1500 mm a year with average annual temperature 25–30 °C. [1]

Taxonomy

The species is dedicated to Alexandre Eyries of le Havre, France.[2]

Description

Flower

E. eyriesii is a very popular large caespitose cactus, widely grown for the huge nocturnal flowers. It is the best known and most commonly grown globular cactus.

In favorable conditions E. eyriseii may form mounds up to 1.5 m tall and 2–3 m wide.

It is globular, elongated and approximately cylindrical, 15–30 cm high, 12–15 cm thick. The cactus is dark green and has 9 to 18 ribs. The ribs have circular areoles with 10 to 18 spines.

The floral stem over the course of a month up to 20 cm long. The flower blooms in the evening of ether spring or summer up to 10–12 cm in diameter. The flower lasts a day, but may last longer in cold or rainy conditions.[1]

Echinopsis eyriesii var. inermis, or Echinopsis inermis, is a spineless variety[3]

Cultivation

Echinopsis eyriesii needs fertile and well drained soil with full sun.

Water the plants in summer, allowing the soil to dry between waterings. The cactus should not be watered in winter to allow for blooming. The temperature may be as low as −7 °C. [1]

References

  1. ^ a b c "Echinopsis eyriesii".
  2. ^ "Pink Easter Lily Cactus (Echinopsis eyriesii)". www.desert-tropicals.com. Retrieved 15 March 2023.
  3. ^ "Echinopsis eyriesii var. Inermis".

Further Reading

  • Edward Anderson “The Cactus family” Timber Press, Incorporated, 2001
  • 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 August 2011
  • David R Hunt; Nigel P Taylor; Graham Charles; International Cactaceae Systematics Group. "The New Cactus Lexicon" dh books, 2006