Английская Википедия:Hypericum densiflorum

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Hypericum densiflorum, also known as bushy St. John's wort or dense St. John's wort, is a perennial herb in the flowering plant family Hypericaceae native to North America. The specific epithet densiflorum is Latin, meaning "densely flowered", referring to the many-flowered cymes.

Description

Hypericum densiflorum is a densely branched shrub with coppery bark that grows between Шаблон:Convert in height. The many slender branches are slightly angled and branchlets are two-edged. The branches bear linear leaves and axillary fascicles, the leaves being Шаблон:Convert long and Шаблон:Convert wide. Its yellow flowers are Шаблон:Convert wide and are borne on crowded compound cymes. The firm and narrow sepals are Шаблон:Convert long and the pedicels are Шаблон:Convert long. The capsules vary in shape from lanceolate to slenderly conic, with three carpels and three styles. The capsules are Шаблон:Cvt long and Шаблон:Cvt thick.[1][2]

The plant flowers from July to September and fruits from early October to the end of autumn.[3]

Habitat and distribution

Hypericum densiflorum occurs on acidic soils in moist and wet conditions, including stream, pond, and lake banks, seepage slopes, and wet meadows. It prefers sandy clay loam and occurs from sea level to Шаблон:Convert of elevation.[4][5][6]

The shrub occurs throughout the eastern and southern United States though it grows far west as Texas and as far north as New York.

Ecology

H. densiflorum has been marked as a pollinator plant, supporting and attracting bees.[6]

Файл:Hypericum densiflorum var. interior.jpg
Hypericum densiflorum var. interior flowering branch

References

  1. Шаблон:Cite book
  2. Шаблон:Cite book
  3. Ошибка цитирования Неверный тег <ref>; для сносок Report не указан текст
  4. Шаблон:Cite web
  5. Шаблон:Cite web
  6. 6,0 6,1 Шаблон:Cite web

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