Steyerbromelia

Steyerbromelia is a plant genus in the subfamily Navioideae within the family Bromeliaceae ( Bromeliaceae ). Previously they were classified in the subfamily Pitcairnioideae. The genus name honors the Steyerbromelia American botanist Julian Alfred Steyermark ( 1909-1988 ). Today Allow about six species in this genus. Distribution area is the Guiana highlands in the north-eastern South America, only in Venezuela. There is no known use by humans, and even botanical gardens rarely have copies in their collections.

Description

In Steyerbromelia species are terrestrial or lithophytische, perennial herbaceous plant that can sometimes form by vegetative propagation stocks.

In basal rosettes the coarse leaves are together. The leaf margins are cut prickly. At least the lower leaf surface is scaly.

Steyerbromelia species form a more or less long, erect inflorescence stem. The ever composite inflorescences have bracts. There are never flower stems available. The hermaphrodite, radial symmetry blooms are triple. There are three sepals present. The three free petals have two vertically inserted scales ( ligules ); Main difference to the closely related Navia and the Lindmania that do not have ligules and the Brewcaria whose ligules inserted transversely, are horizontal. There are two circles, each with three equal, free stamens present. Three carpels are fused into a completely superior ovaries. The style ends in three broad stigma lobes.

The flowers formula is: or

Are formed capsule fruits. The seeds have two appendages as wings.

Systematics and distribution

The genus name Steyerbromelia was published in 1984 by Lyman B. Smith, Julian Alfred Steyermark & Harold E. Robinson in Acta Botanica Venezuelica, 14 (3 ), pp. 8 for the first time, but with a formal error. In the manuscript, the description still considered monotypic genus and only shortly before the publication was a second type added to the manuscript, but without specifying the type species; so this release is invalid for the genus, for the two types but valid. It was not until the next release with the definition of the type species Steyerbromelia discolor LBSm. & H.Rob. thus leads to the valid publication of the genus name by Lyman B. Smith in Lyman B. Smith, Julian Alfred Steyermark & Harold E. Robinson: Revision of the Guayana Highland Bromeliaceae, in Annals of the Missouri Botanical Garden, 73, 1987, p 699 -700.

Since molecular genetic studies showed that the subfamily Pitcairnioideae was not monophyletic in their original extent it was divided into several subfamilies. The subfamily Navioideae was reactivated with the genera Navia, Cottendorfia, Sequencia, Brewcaria and Steyerbromelia. Of the genus Navia 1997, the species with aged men or paniculate inflorescences in the genus and the species Brewcaria with appendages were spun at the seeds in the genus Steyerbromelia by Bruce K. Holst. This three to four additional species came to the genus Steyerbromelia that were previously described by Lyman B. Smith, or with co-authors, as Navia species.

There are about six Steyerbromelia types:

  • Steyerbromelia deflexa L.B.Sm. & H.Rob. Thrives on the terrestrial and Cerro Cerro Duida Huachamacari at altitude 600-1400 meters in the Venezuelan state of Amazonas.
  • Steyerbromelia diffusa LBSm. , Steyermark & H.Rob. ( Syn: Navia diffusa LBSm. ): It thrives lithophytic on Cerro Aratitiyope at altitudes of about 1000 meters in the Venezuelan state of Amazonas.
  • Steyerbromelia discolor L.B.Sm. & H.Rob. Thrives terrestrial on Cerro Marahuaka in the Venezuelan state of Amazonas.
  • Steyerbromelia plowmanii ( LBSm., Steyermark & H.Rob. ) H.Rob. & DCTaylor ( Syn: Navia plowmanii LBSm, Steyerm & H.Rob and Steyerbromelia neblinae B.Holst. .. ): It was published in 2001 in Selbyana 22 ( 1), p 75. The home is the Sierra de la Neblina.
  • Steyerbromelia ramosa ( LBSm. ) B.Holst ( Syn: Navia platyphylla LBSm & Steyerm and Navia ramosa LBSm. .. ): It grows terrestrially in the Venezuelan states of Amazonas and Bolivar.
  • Steyerbromelia thomasii (. LBSm., Steyermark & H.Rob ) B.Holst ( Syn: .. Navia thomasii LBSm, Steyerm & H.Rob. ): The home is the Sierra de la Neblina at altitudes between 500 and 600 meters in the Venezuelan state of Amazonas.

Swell

  • Lyman B. Smith, Julian Alfred Steyermark & Harold E. Robinson: Revision of the Guayana Highland Bromeliaceae, in Annals of the Missouri Botanical Garden, 73, 1987, p 699-700.
  • Lyman B. Smith, Julian Alfred Steyermark & Harold E. Robinson: Acta Botanica Venezuelica, 14 (3 ), 1984.
  • The Bromeliaceae in APWebsite family. (English )
  • Harry E. Luther: An Alphabetical List of Bromeliad Binomials, 2008 (PDF, 321 kB) in The Marie Selby Botanical Gardens, Sarasota, Florida, USA. Published by The Bromeliad Society International. (PDF file, 314 kB)
  • Werner Rauh: Bromeliads - Tillandsias and other cultural worthy bromeliads, Verlag Eugen Ulmer, Stuttgart 1990, ISBN 3-8001-6371-3
  • Thomas J. Givnish, Kendra C. Millam, Paul E. Berry & Kenneth J. Sytsma: Phylogeny, adaptive radiation, and historical biogeography of Bromeliaceae inferred from ndhF sequence data, in Aliso, 23, 2007, Rancho Santa Ana Botanic Garden, S. 3-26: Online. (PDF, 2.1 MB)
  • Bruce K. Holst: Bromeliaceae, pp. 548-676, in Paul E. Berry, Bruce K. Holst & K. Yatskievych (Editor): Flora of the Venezuelan Guayana, Volume 3, Missouri Botanical Garden, St. Louis, USA, in 1997.
  • Jason R. Grant: An annotated catalog of the generic names of the Bromeliaceae, 1998: Online - About the names of the genera of the Bromeliaceae. ( Section systematics)
Lyman Bradford Smith Ovary (botany) Navia (plant)
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