Baeckea

Baeckea brevifolia

Baeckea is a genus of flowering plants in the myrtle family ( Myrtaceae ). The approximately 45 to 70 or 75 species occur in Australia, in New Caledonia and Baeckea frutescens to China. With about 40 to 70 species, Australia is the main distribution point.

  • 5.1 Notes and references

Description

Appearance and leaves

Baeckea species grow as drought- adapted evergreen shrubs that reach stature heights of 10 centimeters to 2.5 meters. They contain essential oils.

The constantly against arranged on the branches leaves are sessile or short-stalked. The leaf blades are leathery in some species. There are no stipules present.

Inflorescences and flowers

The flowers appear singly in the leaf axils or in some zymösen inflorescences. The two small bracts fall off early. There may be a flower stems.

The relatively small flowers are hermaphroditic and fünfzählig double perianth. The five sepals are bell-shaped or hemispherical with each other and also usually adherent to the ovary. The five calyx lobes are membranous and durable. The five free petals are almost circular. There are one, two or four circles, each with five stamens present which do not extend beyond their short stamens, the flower corolla. Two or three carpels are fused into one, usually under constant, sometimes under semi permanent or permanent seldom above two or dreikammerigen ovary. The ovary chamber some ovules are present. The short style ends in a somewhat extended scar.

Pollination is by insects ( entomophily ) or by birds ( Ornithophilie ).

Fruit and seeds

The capsule fruits jump into two or three segments and contain only one to three, rarely more seeds. The kidney-shaped and wrinkled seeds contain a straight embryo with two small cotyledons ( cotyledons ), but no endosperm.

Occurrence

The area of ​​distribution of the species extends from Australia and New Caledonia to Southeast Asia (China). Baeckea species grow in heath bushes, sometimes on sandstone. Some species are locally very limited, so Baeckea Kandos, which is known only approximately from the Kandos - dam in New South Wales.

System

The genus Baeckea was erected in 1753 by Carl Linnaeus in Species Plantarum, 2, p 358. Linnaeus named the genus Baeckea after his friend Abraham Bäck (1713-1795), a Swedish physician and naturalist. Type species is Baeckea frutescens L..

There are a variety of synonyms for Baeckea L. are: Allostis Raf, Auticoryne Turcz, Camphoromyrtus Look, Drosodendron Roem, Ericomyrtus Turcz, Imbricaria Sm, Jungia Gaertn, Mollia JFGmel, Murrinea Raf, Neuhofia. .. .. .. . Stokes, Schidiomyrtus showers, shower Tetrapora, tetraspora Miq. , Tjongina Adans ..

Some species that were formerly classified in the genus Baeckea now belong to the genera Astartea DC., Babingtonia Lindl., Euryomyrtus showers, Ochrospermum and Triplarina Raf., And Harmogia showers, Cyathostemon Turcz. , Hypocalymma ( Endl. ) Endl. , Oxymyrrhine Schauer, Rinzia showers, Scholtzia showers.

The genus belongs to the tribe Baeckea Chamelaucieae in the subfamily Myrtoideae in the family Myrtaceae.

There are about 45 to 75 Baeckea species ( Select by Apni as of 2010):

  • Baeckea blackettii F.Muell.
  • Baeckea brevifolia ( Rudge ) DC.
  • Baeckea crassifolia Lindl.
  • Baeckea crispiflora ( F.Muell. ) F.Muell.
  • Baeckea decipiens W.Fitzg.
  • Baeckea diosmifolia Rudge
  • Baeckea elderiana injection.
  • Baeckea ericaea F.Muell.
  • Baeckea exserta S.Moore
  • Baeckea floribunda Benth.
  • Baeckea frutescens L.
  • Baeckea grandibracteata injection.
  • Baeckea grandiflora Benth. ( Large-flowered Baeckea )
  • Baeckea grandis injection.
  • Baeckea gunniana shower ex Walp.
  • Baeckea imbricata ( Gaertn. ) Druce
  • Baeckea Kandos A.R.Bean
  • Baeckea latens C.R.P.Andrews
  • Baeckea latifolia ( Benth. ) A.R.Bean
  • Baeckea leptocaulis Hook. f
  • Baeckea leptophylla ( Turcz. ) Domin
  • Baeckea linifolia Rudge
  • Baeckea muricata C.A.Gardner
  • Baeckea ochropetala F.Muell.
  • Baeckea omissa A.R.Bean
  • Baeckea ovalifolia ( F.Muell. ) F.Muell.
  • Baeckea pachyphylla Benth.
  • Baeckea pentagonantha F.Muell.
  • Baeckea platycephala injection.
  • Baeckea polystemonea F.Muell.
  • Baeckea preissiana ( Schauer) Druce
  • Baeckea pulchella A.Cunn. ex DC.
  • Baeckea pygmaea R.Br. ex Benth.
  • Baeckea robusta F.Muell.
  • Baeckea staminosa injection.
  • Baeckea subcuneata F.Muell.
  • Baeckea tenuiramea S.Moore
  • Baeckea thymoides S.Moore
  • Baeckea trapeza A.R.Bean
  • Baeckea tuberculata Trudgen
  • Baeckea uncinella Benth.
  • Baeckea utilis F.Muell. ex Miq.

Use

Some Baeckea species are used as a tea suppliers because of their content of essential oils.

Swell

  • Jie Chen & Lyn A. Craven: Myrtaceae in the Flora of China, Volume 13, 2007: Baeckea, pp. 329-330 - text the same online as printed work. (Section Description and systematics)
  • Entry in the Western Australian flora. ( Description section )
  • Peter G. Wilson: Entry in the New Sout Wales Flora Online. (Section Description and systematics)
Ovary (botany) Cereal germ Agricultural Research Service
97178
de