Scented flowers

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Scented flowers
Several small inflorescences on the branch of Osmanthus fragrans

Several small inflorescences on the branch of Osmanthus fragrans

Systematics
Nuclear eudicotyledons
Asterids
Euasterids I
Order : Mint family (Lamiales)
Family : Olive family (Oleaceae)
Genre : Scented flowers
Scientific name
Osmanthus
Lour.

The scented flowers ( osmanthus ) are a genus of plants in the olive family (Oleaceae).

description

Illustration of Osmanthus delavayi

Vegetative characteristics

The osmanthus species grow as evergreen shrubs or trees . The opposite arranged leaves are divided into a petiole and a leaf blade. The leaf blade is simple. The leaf margin is smooth or serrated.

The zymous inflorescences are clustered in the leaf axils or the flowers are in short panicle inflorescences. There are two bracts .

Generative characteristics

The flowers of all kinds smell sweet (hence the name). The usually hermaphrodite flowers are radial symmetry and four-fold with a double flower envelope . The four sepals are fused bell-shaped. The four fused petals are usually white or yellowish. There are only two (rarely four) stamens present.

Osmanthus species produce stone fruits .

Prickly-leaved scented flower ( Osmanthus heterophyllus )
Prickly-leaved scented flower ( Osmanthus heterophyllus )
Spring scented flower ( Osmanthus × burkwoodii )

Systematics and distribution

The genus Osmanthus was established in 1790 by the Portuguese missionary and botanist João de Loureiro in Flora Cochinchinensis , 1, page 28.

All species occur in Paleotropic . Some species occur in the Middle East, the Himalayas and New Caledonia. Most of the species are common in Southeast Asia.

The genus Osmanthus comprises only about 29 species since 2015:

About six species were included in the genus Cartrema Raf in 2012 and 2015 . posed:

  • American scented flower ( Osmanthus mexicanus Lundell or Osmanthus americanus (L.) A.Gray ) → Cartrema americana (L.) GLNesom : It is distributed from the southeastern USA via Mexico to Honduras .
  • Osmanthus floridanus Chapm. (Syn .: Osmanthus megacarpus (Small) Small ex Little ) → Cartrema floridana (Chapm.) GLNesome : This endemic occurs only in central Florida.
  • Osmanthus longipetiolatus H.T.Chang , Osmanthus matsumuranus Hayata , Osmanthus maximus H.T.Chang , Osmanthus obovatifolius Kaneh. , Osmanthus pedunculatus Gagnep. , Osmanthus wilsonii NakaiCartrema matsumurana (Hayata) de Juana : It occurs from Assam via Laos , Thailand, Cambodia , Vietnam and China to Taiwan.
  • Osmanthus minor P.S.GreenCartrema minor (PSGreen) de Juana : It comes in the Chinese provinces of Fujian , Guangdong, Guangxi, Jiangxi and Zhejiang before and Hainan.
  • Osmanthus scortechinii King & GambleCartrema scortechinii (King & Gamble) de Juana : It occurs from the Thai peninsula via Malaysia to Sumatra.
  • Osmanthus sumatranus P.S.GreenCartrema sumatrana (PSGreen) de Juana : only occurs in Sumatra.

use

The sweet scented blossoms ( Osmanthus fragrans ) in particular are used in Asia as a spice that is widely used: In the “Chin Hsuan Cha” tea mixture, osmanthus blossoms are mixed into green tea ; they are also added to the scented wine as an ingredient.

Some varieties are used as ornamental plants .

Some horticultural hybrids have also been bred:

  • Spring scented flower ( Osmanthus × burkwoodii (Burkwood & Skipwith) PSGreen ): It is a hybrid Osmanthus decorus × Osmanthus delavayi , Syn .: × Osmarea burkwoodii Burkwood & Skipwith :
  • Osmanthus × fortunei Carrière : It is a hybrid of Osmanthus fragrans × Osmanthus heterophyllus ; This hybrid is hardy in western Central Europe (i.e. in Germany, Austria and Switzerland) .

Individual evidence

  1. Osmanthus at Tropicos.org. Missouri Botanical Garden, St. Louis, Retrieved December 14, 2017.
  2. a b c d e f g h i j k l m n o p q r Rafaël Govaerts (Ed.): Osmanthus. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved December 14, 2017.
  3. a b Guy L. Nesom: Synopsis of American Cartrema (Oleaceae). In: Phytoneuron , 2012-96, 2012, pp. 1-11. Full text PDF.
  4. a b José Ignacio De Juana Clavero: Cambios nomenclaturales en la sección Leiolea (Spach) PS Green, del género Osmanthus Lour. (Oleaceae). In: Bouteloua , Volume 22, November 14, 2015, pp. 28-39. Full text PDF.
  5. a b c d e f g h Osmanthus in the Germplasm Resources Information Network (GRIN), USDA , ARS , National Genetic Resources Program. National Germplasm Resources Laboratory, Beltsville, Maryland. Retrieved December 14, 2017.
  6. a b c d e f g h i j k l m Mei-chen Chang, Lien-ching Chiu, Zhi Wei, Peter S. Green: Oleaceae. : Osmanthus , p. 286 - online with the same text as the printed work , In: Wu Zheng-yi, Peter H. Raven (Ed.): Flora of China , Volume 15 - Myrsinaceae through Loganiaceae , Science Press and Missouri Botanical Garden Press, Beijing and St. Louis, 1996, ISBN 0-915279-37-1 .

Web links

Commons : Scented Flowers ( Osmanthus )  - Collection of images, videos and audio files