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| familia = [[Crassulaceae]]
| familia = [[Crassulaceae]]
| genus = ''[[Echeveria]]''
| genus = ''[[Echeveria]]''
| species = '''''E. peacockii'''''
| species = '''''E. desmetiana'''''
| binomial = ''Echeveria peacockii''
| binomial = ''Echeveria desmetiana''
| binomial_authority = De Smet
| binomial_authority = Croucher {{efn|The original publication unhelpfully refers only to a 'Mr. Croucher', who may be impossible to identify.<ref>{{cite journal |url=https://www.biodiversitylibrary.org/item/103696#page/262/mode/1up |title=New Garden Plants |first=J. G. |last=Baker |authorlink=John Gilbert Baker |journal=[[The Gardeners' Chronicle]] |volume=2 |year=1874 |page=258}}</ref>}}<ref>{{cite web|last=Tropicos.org|title=Echeveria peacockii Croucher|url=http://www.tropicos.org/Name/8901624|publisher=Missouri Botanical Garden|accessdate=1 Jul 2012}}</ref>|
}}
}}


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== Description ==
== Description ==
This plant has a short stem or none at all. Leaves are numerous (50 or more), crowded, relatively narrow, 5–6&nbsp;cm long, 20–35&nbsp;mm wide, and arranged as a [[rosette (botany)|rosette]]. The top of the leaf is flat, bottom of the leaf is rounded and keeled (curved). The leaves are always dusty and crumbly. The peduncle is thick and erect. It has inflorescences of three, [[secund]], 30&nbsp;cm tall or more. There are few bracts on this plant and they are all very close together, are [[obovate]], [[acuminate]], keeled, are 18&nbsp;mm thick, and are [[pruinose]]. Pedicels are very short (up to 3&nbsp;mm thick). The sepals are bunched together, unequal in size, are oval-shaped, and grow up to 8&nbsp;mm long. The corolla is straight grows up to 11&nbsp;mm long, and 6–7&nbsp;mm thick. The petals are slightly spreading at tips, sharply keeled, and are hollowed within the base. Nectaries are oblique and 1.5&nbsp;mm wide.<ref name=Walther /> It produces 20 or more flowers, and begins to flower in June. ''E. desmetiana'' has a chromosome number of n = 15.<ref name=Walther />
This plant has a short stem or none at all. Leaves are numerous (50 or more), crowded, relatively narrow, 5–6&nbsp;cm long, 20–35&nbsp;mm wide, and arranged as a [[rosette (botany)|rosette]]. The top of the leaf is flat, bottom of the leaf is rounded and keeled (curved). The leaves are always dusty and crumbly. The peduncle is thick and erect. It has inflorescences of three, [[secund]], 30&nbsp;cm tall or more. There are few bracts on this plant and they are all very close together, are [[obovate]], [[acuminate]], keeled, are 18&nbsp;mm thick, and are [[pruinose]]. Pedicels are very short (up to 3&nbsp;mm thick). The sepals are bunched together, unequal in size, are oval-shaped, and grow up to 8&nbsp;mm long. The corolla is straight grows up to 11&nbsp;mm long, and 6–7&nbsp;mm thick. The petals are slightly spreading at tips, sharply keeled, and are hollowed within the base. Nectaries are oblique and 1.5&nbsp;mm wide.<ref name=Walther /> It produces 20 or more flowers, and begins to flower in June. ''E. desmetiana'' has a chromosome number of n = 15.<ref name=Walther />

==Taxonomy==
''Echeveria desmetiana'' was first described by De Smet in 1879. It had previously been described as ''Echeveria peacockii'' by T. Moore in 1875. However, the name ''Echeveria peacockii'' had already been published by Croucher in 1874 for a plant now regarded as ''[[Dudleya pulverulenta]]'', so Moore's name is illegitimate, although it has been used for this species.<ref>{{cite web |title=Desmetiana De Smet, 1874 |url=https://www.crassulaceae.ch/de/artikel?akID=48&aaID=2&aiID=D&aID=2243 |access-date=2022-03-23 |archive-url=https://web.archive.org/web/20210506090325/https://www.crassulaceae.ch/de/artikel?akID=48&aaID=2&aiID=D&aID=2243 |archive-date=2021-05-06}}</ref>


==Distribution==
==Distribution==

Revision as of 17:44, 23 March 2022

Echeveria peacockii
Scientific classification
Kingdom:
(unranked):
(unranked):
(unranked):
Order:
Family:
Genus:
Species:
E. desmetiana
Binomial name
Echeveria desmetiana
De Smet

Echeveria desmetiana, incorrectly known as Echeveria peacockii, is in the family Crassulaceae. It is very distinct from all other species, except for Echeveria subsessilis. L. de Smet was the first grower of this plant.[1]

Description

This plant has a short stem or none at all. Leaves are numerous (50 or more), crowded, relatively narrow, 5–6 cm long, 20–35 mm wide, and arranged as a rosette. The top of the leaf is flat, bottom of the leaf is rounded and keeled (curved). The leaves are always dusty and crumbly. The peduncle is thick and erect. It has inflorescences of three, secund, 30 cm tall or more. There are few bracts on this plant and they are all very close together, are obovate, acuminate, keeled, are 18 mm thick, and are pruinose. Pedicels are very short (up to 3 mm thick). The sepals are bunched together, unequal in size, are oval-shaped, and grow up to 8 mm long. The corolla is straight grows up to 11 mm long, and 6–7 mm thick. The petals are slightly spreading at tips, sharply keeled, and are hollowed within the base. Nectaries are oblique and 1.5 mm wide.[1] It produces 20 or more flowers, and begins to flower in June. E. desmetiana has a chromosome number of n = 15.[1]

Taxonomy

Echeveria desmetiana was first described by De Smet in 1879. It had previously been described as Echeveria peacockii by T. Moore in 1875. However, the name Echeveria peacockii had already been published by Croucher in 1874 for a plant now regarded as Dudleya pulverulenta, so Moore's name is illegitimate, although it has been used for this species.[2]

Distribution

Echeveria desmetiana grows naturally in Mexico. It also grows in California, and can be traced to Dr. J. N. Rose's introduction of the plant.[1]

Habitat and ecology

Echeveria desmetiana tends to grow on rocky outcroppings at higher altitudes. In this type of environment, water is drained quickly from the roots of the plant, never allowing the plant to be submerged in water. This plant is fast growing and requires a bright light to prevent stretching, which forms an unhealthy plant.[3]

E. desmetiana grows in a warm, dry, sunny climate. They tend to grow in areas that are sometimes covered in shade (cannot tolerate too much sun). The optimal temperature for growth is 20-30℃.[4]

Cultivation

Echeveria desmetiana is cultivated as an ornamental plant, and often used as a drought-tolerant groundcover "carpet plant".

Notes

References

  1. ^ a b c d Walther, Eric (1972). Echeveria. California Academy of Sciences. pp. 265–266.
  2. ^ "Desmetiana De Smet, 1874". Archived from the original on 2021-05-06. Retrieved 2022-03-23.
  3. ^ "Echeveria peacockii". Retrieved 2012-06-28.[permanent dead link]
  4. ^ Flower Information Network. "Echeveria Peacockii". antisocialmediallc.com. Archived from the original on 8 December 2011. Retrieved 1 July 2012.