Английская Википедия:Cyclamen coum

Материал из Онлайн справочника
Перейти к навигацииПерейти к поиску

Шаблон:Short description Шаблон:Use dmy dates Шаблон:Speciesbox

Cyclamen coum, the eastern sowbread,[1] is a species of flowering plant in the family Primulaceae. It is a tuberous herbaceous perennial, growing to Шаблон:Convert, with rounded heart-shaped leaves and pink shell-shaped flowers with darker coloration at the base. It is valued in horticulture as groundcover, and for the flowers which bloom in winter and early spring.[2]

Description

The tuber produces roots from the center of the bottom only.[3] It remains small, only reaching about Шаблон:Convert across.

The leaves are round or kidney-shaped to long heart-shaped. The color is all-silver, all-green, or silver variegated with a variably sized green hastate (arrowhead-shaped) or "Christmas tree" pattern and a green edge. The edge is smooth or gently toothed, but never angled and pointed as in Cyclamen hederifolium.Шаблон:Cn

The flowers are squat, with almost round petals, unlike any other group of cyclamen species. They bloom from winter to spring. The petals are magenta, pink, or white, with a darker blotch at the base. Below the blotch is a small white or pink "eye".Шаблон:Cn

Etymology

The species name coum more likely refers to Koa or Quwê (an ancient region in eastern Cilicia, southeastern Turkey), which is part of the species' natural range, than to the island of Kos, where the species does not grow.[4]

Distribution

Cyclamen coum is native to two areas. The main range is around the Black Sea, from Bulgaria through northern Turkey to the Caucasus and Crimea, and a disjunct population lies near the Mediterranean from the Hatay Province in Turkey through Lebanon to northern Israel.Шаблон:Cn

Cyclamen coum subsp. coum inhabits the western part of the main range and the southern area, while C. coum subsp. caucasicum inhabits the eastern part, including the Caucasus. Plants with intermediate characteristics are found in the middle of the range.Шаблон:Cn

Cultivation

Cyclamen coum self-seeds and grows more slowly than Cyclamen hederifolium and is usually out-competed when the two are grown together. The species C. coum[5] and the form C. coum subsp. coum f. coum Pewter Group[6] have gained the Royal Horticultural Society's Award of Garden Merit (confirmed 2017).[7]

Hardiness

Along with C. hederifolium and C. purpurascens, C. coum is one of the hardiest cyclamen species, growing well in an area of New York where the temperature has reached as low as Шаблон:Convert.

Subspecies and forms

There are two subspecies and three forms, distinguished by leaf and flower characteristics. Cyclamen elegans was formerly considered a subspecies (Cyclamen coum subsp. elegans), but is now a species in its own right.Шаблон:Cn

  • leaf as wide or broader than long
    • Cyclamen coum subsp. coum (west and south) — leaf edge usually smooth, petal lobes Шаблон:Convert
      • Cyclamen coum subsp. coum f. coum — petals pink to magenta, with dark markings at base of petal lobe
      • Cyclamen coum subsp. coum f. pallidum — petals white or very pale pink, with dark markings
      • Cyclamen coum subsp. coum f. albissimum — petals pure white, without markings
  • leaf longer than wide

Note: The isolate population of Crimea, formerly called Cyclamen kuznetzovii Kotov & Czernova, is now considered as a local variant of Cyclamen coum.[8][9]

Gallery

Similar species

The Cyclamen coum group also includes Cyclamen abchasicum, Cyclamen elegans, Cyclamen alpinum, Cyclamen parviflorum and Cyclamen pseudibericum.

  • leaves wider than long
  • leaves longer than wide; leaf edge coarsely toothed, scalloped, or shallowly lobed
    • petals as long as Cyclamen coum
      petals horizontal, twisted like a propeller; leaves speckled with grey
    • petals longer than Cyclamen coum
      taxon between Cyclamen coum and Cyclamen elegans
      petals with broad dark blotch and white band on nose

Hybrid

Cyclamen ×drydenii Grey-Wilson, a hybrid Cyclamen coum × Cyclamen alpinum, has intermediate characteristics, i.e., round leaves and horizontal twisted petals.

References

Шаблон:Reflist

External links

Шаблон:Commonscat Шаблон:Wikispecies

Шаблон:Taxonbar

Партнерские ресурсы
Криптовалюты
Магазины
Хостинг
Разное

  1. ↑ Шаблон:BSBI 2007
  2. ↑ Шаблон:Cite book
  3. ↑ "BULB LOG 31 --- 30th July 2008" (photos of a tuber). Scottish Rock Garden Club.
  4. ↑ Cyclamen coum subsp. coum Pink Silverleaf at Paghat's Garden
  5. ↑ Шаблон:Cite web
  6. ↑ Шаблон:Cite web
  7. ↑ Шаблон:Cite web
  8. ↑ FRITSCHIANA 55 - Floristic endemism in the CrimeaШаблон:Dead link
  9. ↑ Janis Ruksans, Buried Treasures: Finding and Growing the World's Choicest Bulbs, p. 113, Timber Press, 2007 - Шаблон:ISBN
Источник — http://wikihandbk.com/ruwiki/index.php?title=Английская_Википедия:Cyclamen_coum&oldid=14132138