Steyerbromelia

Steyerbromelia
Systematics
Monocots Commelinids Order : Sweet grass (Poales) Family : Bromeliads (Bromeliaceae) Subfamily : Navioideae Genre : Steyerbromelia
Scientific name
Steyerbromelia
LBSm.

Steyerbromelia is a genus of plants in the subfamily Navioideae withinthe bromeliad family (Bromeliaceae). Previously they were classified in the subfamily Pitcairnioideae . The sixor sospecies occur in the Guiana Highlands in northeastern South America only in Venezuela . It is not known to have been used by humans and even botanical gardens rarely have specimens in their collections.

description

In Steyerbromelia TYPES concerns terrestrial or lithophytische , perennial herbaceous plants , sometimes through vegetative propagation make stocks.

The coarse leaves stand together in basal rosettes . The leaf margins are prickly serrate. At least the underside of the leaf is scaly.

Steyerbromelia species form a more or less long, upright inflorescence stem. The always assembled inflorescences have bracts . There are never flower stalks. The hermaphroditic, radial symmetry flowers are threefold. There are three sepals . The three free petals have two vertically inserted scales (ligules); Main distinguishing feature to the closely related Navia and to the Lindmania , which have no ligules, and to the Brewcaria , whose ligules are inserted transversely, horizontal. There are two circles with three identical, free stamens each. Three fruit leaves are a perfect Upper permanent ovary grown. The stylus ends in three broad stigma lobes.

The flower formula is: or ${\displaystyle \star \;K_{3}\;C_{3}\;A_{3+3}}$ ${\displaystyle G_{\underline {(3)}}}$

There are fruit capsules formed. The seeds have two appendages as wings.

Systematics and distribution

The genus name Steyerbromelia was first published in 1984 by Lyman B. Smith , Julian Alfred Steyermark and Harold E. Robinson in Acta Botanica Venezuelica , Volume 14, 3, p. 8, but with a formal error. In the manuscript, the description was still made as a monotypical genus and only shortly before publication was a second species added to the manuscript, but without specifying the type species; this publication is therefore invalid for the genus, but valid for both species. Only the next publication with the definition of the type species Steyerbromelia discolor L.B.Sm. & H.Rob. thus leads to the valid publication for the generic name by Lyman B. Smith in Lyman B. Smith, Julian Alfred Steyermark and Harold E. Robinson: Revision of the Guayana Highland Bromeliaceae. In: Annals of the Missouri Botanical Garden , Volume 73, 1987, pp. 699-700. The genus name Steyerbromelia honors the American botanist Julian Alfred Steyermark (1909–1988).

Since molecular genetic studies showed that the subfamily Pitcairnioideae was not monophyletic in its original extent, it was divided into several subfamilies. The subfamily Navioideae was reactivated with the genera Navia , Cottendorfia , Sequencia , Brewcaria and Steyerbromelia . From the genus Navia , in 1997 Bruce K. Holst separated the species with spiked or panicle inflorescences into the genus Brewcaria and the species with appendages on the seeds into the genus Steyerbromelia . As a result, three to four more species were added to the genus Steyerbromelia , which had previously been described by Lyman B. Smith , or with co-authors, as Navia species.

The genus Steyerbromelia occurs in the Guiana Highlands in northeastern South America only in Venezuela .

There are about six Steyerbromelia species:

• Steyerbromelia deflexa L.B.Sm. & H.Rob. : It thrives terrestrially on Cerro Duida and Cerro Huachamacari at altitudes between 600 and 1400 meters in the Venezuelan state of Amazonas.
• Steyerbromelia diffusa L.B.Sm., Steyermark & ​​H.Rob. (Syn .: Navia diffusa L.B.Sm. ): It thrives lithophytically on the Cerro Aratitiyope at altitudes of about 1000 meters in the Venezuelan state of Amazonas.
• Steyerbromelia discolor L.B.Sm. & H.Rob. : It thrives terrestrially on Cerro Marahuaka in the Venezuelan state of Amazonas.
• Steyerbromelia plowmanii (LBSm., Steyermark & ​​H.Rob.) H.Rob. & DCTaylor (Syn .: Navia plowmanii L.B.Sm., Steyerm. & H.Rob. , 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 L.B.Sm. & Steyerm. And Navia ramosa L.B.Sm. ): It thrives terrestrially in the Venezuelan states of Amazonas and Bolivar.
• Steyerbromelia thomasii (LBSm., Steyermark & ​​H.Rob.) B.Holst (Syn .: Navia thomasii L.B.Sm., Steyerm. & H.Rob. ): It thrives in 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 , Volume 73, 1987, pp. 699-700.
• Lyman B. Smith , Julian Alfred Steyermark , Harold E. Robinson : Acta Botanica Venezuelica , 14, 3, 1984.
• The Bromeliaceae family on the AP website. (Section systematics)
• 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 bromeliads worthy of culture. 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 , Volume 23, 2007, Rancho Santa Ana Botanic Garden, pp. 3-26: Online. (PDF; 2.1 MB)
• Bruce K. Holst: Bromeliaceae , pp. 548–676, In: Paul E. Berry, Bruce K. Holst & K. Yatskievych (Eds.): Flora of the Venezuelan Guayana , Volume 3, Missouri Botanical Garden, St. Louis, USA, 1997.
• Jason R. Grant: An annotated catalog of the generic names of the Bromeliaceae , 1998: Online - About the names of the generic names of the Bromeliaceae. (Section systematics)

Individual evidence

1. ↑ On the names of the bromeliad genera at the Bromeliad Society International . ( Memento of the original from February 3, 2007 in the Internet Archive ) Info: The archive link was automatically inserted and not yet checked. Please check the original and archive link according to the instructions and then remove this notice.  
2. ^ Jason R. Grant: An annotated catalog of the generic names of the Bromeliaceae , 1998: Online - About the names of the generic names of the Bromeliaceae.
3. ↑ In "Species Index" click on Steyerbromelia in Eric J. Gouda, Derek Butcher, Kees Gouda: Encyclopaedia of Bromeliads , Version 3.1 (2012) . Retrieved December 5, 2014.
4. ↑ Illustration of plant details from Steyerbromelia deflexa of the collection number Steyermark et al. 126432 drawn by AR Tangerini in Act. Bot. Venezuelica , 14, 3, 1984, Fig. 3.
5. ↑ Illustration of flower details of Steyerbromelia deflexa of the collection number Steyermark et al. 126432, drawn by AR Tangerini, In: Act. Bot. Venezuelica , 14, 3, 1984, Fig. 4.
6. ↑ Illustration of flower details of Steyerbromelia diffusa of the collection number Steyermark et al. 130072, drawn by AR Tangerini, In: Ann. Mon. Bot. Gard. , Volume 73, Issue 4, 1986, Fig. 28.

further reading

• TJ Givnish, JC Pires, SW Graham, MA McPherson, LM Prince, TB Patterson: Phylogeny, biogeography, and ecological evolution in Bromeliaceae: Insights from ndhF sequences. In: JT Columbus, EA Friar, JM Porter, LM Prince, MG Simpson: Monocots: Comparative Biology and Evolution. Poales , Rancho Santa Ana Botanical Garden, Claremont, 2006, 23, pp. 3-26.

Web links

• Images of Steyerbromelia discolor .