Английская Википедия:Glandularia

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Шаблон:Short description Шаблон:Automatic taxobox

Файл:Glandularia canadensis.jpg
Glandularia canadensis, a member of the northern lineage. Its chloroplasts derive from a South American Verbena
Файл:Glandularia pulchella (Moss Verbena) W IMG 1613.jpg
Glandularia pulchella

Glandularia, common name mock vervain or mock verbena, is a genus of annual and perennial herbaceous flowering plants in the family Verbenaceae. They are native to the Americas.

Description

These plants, like their relatives the vervains (verbenas), usually have showy five-petalled flowers in shades of pink, purple and blue. The genus is diverse and often grown as ornamentals. Note that some species are localized endemics and are endangered in their native areas. [1]

Taxonomy

Glandularia species are closely related to the true vervains[2] and sometimes still included with them in Verbena. Horizontal chloroplast transfer occurred at least twice and possibly three times between these genera, which are otherwise too distinct to warrant unification. Somehow, chloroplasts from V. orcuttiana, swamp verbena (V. hastata) or a close relative of these had admixed into the G. bipinnatifida genome. Although hybridization runs rampant in the true and mock vervains – the ancestors of the well-known garden vervain are quite obscureШаблон:Citation needed – it does not seem to have been the cause of the cross-species gene transfer.[3]

Research has found a signal of one more transfer event. This had introduced chloroplasts from an ancestral member of the Verbena lineage nowadays found in South America into Glandularia. Although all members of the present genus can be distinguished to have a chromosome count of five, the South American species are diploid, while polyploid hybrid Glandularia are very widespread from northern Central America northwards. The second genetic introgression must have occurred before the genus spread north, as species with the Verbena-like chloroplasts are found all over the Americas. Since the new chloroplast genes replaced the old ones, it may be that the possibly hybridogenic G. bipinnatifida actually underwent horizontal chloroplast transfer twice in its evolutionary history.[3]

Cultivation

A large number of cultivars, in shades of white, pink, blue and purple, have been developed for garden use, and are particularly suitable for containers - window-boxes and hanging baskets. Though tender perennials, they are usually grown in temperate areas as half-hardy annuals (sown under glass), or sold as young plants for planting out after the danger of frost has passed. They are still widely referenced in the British horticulture trade as verbenas. The following have gained the Royal Horticultural Society’s Award of Garden Merit:-[4]

  • ’Claret’[5]
  • ’Donalena Lavender Grace’ (Donalena Series)[6]
  • Quartz Series[7]
  • ’Silver Anne’[8]
  • ’Sissinghurst’[9]
  • ’Toronto’ (G. canadensis)[10]

Species

The following 81 species are recognized by The Plant List:[11] Шаблон:Div col

Шаблон:Div col end

References

Шаблон:Commons category Шаблон:Reflist

Шаблон:Taxonbar Шаблон:Authority control

Партнерские ресурсы
Криптовалюты
Магазины
Хостинг
Разное

  1. ↑ https://www.wildflower.org/plants/search.php?search_field=glandularia&newsearch=true
  2. ↑ Шаблон:Cite journal
  3. ↑ 3,0 3,1 Шаблон:Cite journal
  4. ↑ Шаблон:Cite web
  5. ↑ Шаблон:Cite web
  6. ↑ Шаблон:Cite web
  7. ↑ Шаблон:Cite web
  8. ↑ Шаблон:Cite web
  9. ↑ Шаблон:Cite web
  10. ↑ Шаблон:Cite web
  11. ↑ Шаблон:Cite web
  12. ↑ https://www.wildflower.org/plants/search.php?search_field=glandularia&newsearch=true
  13. ↑ https://www.wildflower.org/plants/search.php?search_field=glandularia&newsearch=true
Источник — http://wikihandbk.com/ruwiki/index.php?title=Английская_Википедия:Glandularia&oldid=14955932