''Hypericum patulum'', known as goldencup St. John's wort or yellow mosqueta, is a species of flowering plant in ''

Hypericum ''Hypericum'' is a genus of flowering plants in the family (biology), family Hypericaceae (formerly considered a subfamily of Clusiaceae). The genus has a nearly worldwide distribution, missing only from tropical lowlands, deserts and polar re ...

'' sect. ''Ascyreia''.

Taxonomy

''Hypericum patulum'' was originally described by

Carl Peter Thunberg Carl Peter Thunberg, also known as Karl Peter von Thunberg, Carl Pehr Thunberg, or Carl Per Thunberg (11 November 1743 – 8 August 1828), was a Sweden, Swedish Natural history, naturalist and an Apostles of Linnaeus, "apostle" of Carl Linnaeus ...

in 1784. It was first published in

Systema Vegetabilium ''Systema Vegetabilium'' (abbreviated as Syst. Veg.) is a book published in four editions, following twelve earlier editions known as ''Systema Naturae''. The first edition, published in 1774 and edited by Johan Andreas Murray is counted as edit ...

later that year by

Johan Andreas Murray Johan Andreas (Anders) Murray (27 January 1740 – 22 May 1791) was a Swedish physician of German descent and botanist, who published a major work on plant-derived medicines. Biography Johan Anders Murray was born in Stockholm on 27 January 1740 ...

. The species has a sporophytic and gametopythic chromosome count of 18 each.

Subordinate taxa

''Hypericum patulum'' has 5 accepted variants as subordinate taxa: * ''H. patulum'' var. ''attenuatum'' Choisy 1824 * ''H. patulum'' var. ''forrestii'' Chitt. 1923 * ''H. patulum'' var. ''henryi '' Bean 1905 * ''H. patulum'' var. ''hookerianum '' (Wight & Arn.) Kuntze 1891 * ''H. patulum ''var. ''uralum'' (Buch.-Ham. ex D. Don) Koehne 1893

Cultivars

''Hypericum patulum'' is cultivated as a garden plant under the name ''Hypericum'' 'Hidcote' or ''Hypericum'' x ''hidcoteense'' 'Hidcote'. It is grown for its large, bright flowers and its attractiveness to pollinators such as bees and small birds.

Distribution and habitat

The species is native only to the

Guizhou ) , image_skyline = , image_caption = , image_map = Guizhou in China (+all claims hatched).svg , mapsize = 275px , map_alt = Map showing the location of Guizhou Province , map_caption = Map s ...

and

Sichuan Sichuan is a province in Southwestern China, occupying the Sichuan Basin and Tibetan Plateau—between the Jinsha River to the west, the Daba Mountains to the north, and the Yunnan–Guizhou Plateau to the south. Its capital city is Cheng ...

provinces of

China China, officially the People's Republic of China (PRC), is a country in East Asia. With population of China, a population exceeding 1.4 billion, it is the list of countries by population (United Nations), second-most populous country after ...

, but it has been naturalized in

Japan Japan is an island country in East Asia. Located in the Pacific Ocean off the northeast coast of the Asia, Asian mainland, it is bordered on the west by the Sea of Japan and extends from the Sea of Okhotsk in the north to the East China Sea ...

Taiwan Taiwan, officially the Republic of China (ROC), is a country in East Asia. The main geography of Taiwan, island of Taiwan, also known as ''Formosa'', lies between the East China Sea, East and South China Seas in the northwestern Pacific Ocea ...

, and

India India, officially the Republic of India, is a country in South Asia. It is the List of countries and dependencies by area, seventh-largest country by area; the List of countries by population (United Nations), most populous country since ...

, as well as in

Australia Australia, officially the Commonwealth of Australia, is a country comprising mainland Australia, the mainland of the Australia (continent), Australian continent, the island of Tasmania and list of islands of Australia, numerous smaller isl ...

and

South Africa South Africa, officially the Republic of South Africa (RSA), is the Southern Africa, southernmost country in Africa. Its Provinces of South Africa, nine provinces are bounded to the south by of coastline that stretches along the Atlantic O ...

. The species is also widely cultivated for garden use in temperate regions. The species is found at elevations of 1200–3600 meters in dry and open habitats, especially in thickets, on scrubby slopes, and on cliffs.

Description

Plants of the species are shrubs that grow from 0.3 to 1.5 meters tall. They grow in a bushy fashion, with spreading branches that are sometimes weakly frondose. The stems are 4-lined or 4-angled when the plant is young but later become 2-lined, and sometimes become terete. The leaves are thick and paper-like and are rather glaucous, with short laminar glands, streaks, and dots. Its inflorescence is 1-15-flowered that blossom from 1 or 2 nodes. The flowers are flat-topped, and sometimes have a short terminal internode and branches that come from the middle of the stem. The petals are a golden yellow color, without any tinge of red. The stamen fascicles, each with 50-70 stamens, grow to be up to 7–12 mm, and are about half as long as the petals. The seeds are dark brown and grow from 1-1.2 millimeters long.

Gallery

(MHNT) Hypericum patulum - Habitus.jpg, Habit (MHNT) Hypericum patulum - flower.jpg, Flower Hypericum 'Hidcote' J1.jpg, Hypericum 'Hidcote' cultivar Hypericum patulum Dziurawiec rozpierzchły 2017-10-15 02.jpg, In fruit Hypericum patulum 1.JPG, Whole in fruit

References

{{Taxonbar, from=Q161436 patulum Flora of Asia Plants described in 1784