Encyclopedia of Life · EOL (see source)
Brocchinia
Sign in to saveBrocchinia is a genus of the botanical family Bromeliaceae, and is the sole genus of the subfamily Brocchinioideae, containing 20 species. The genus is named after Giovanni Battista Brocchi, Italian naturalist (1772–1826). Brocchinia species are native primarily to the ancient Guayana Shield in southern Venezuela and Guyana, with some species extending into Colombia and northern Brazil. Its species are generally restricted to areas of sand and sandstone of the Roraima Formation; a few occur on granite.
Species
Genus
- PhylumMollusca
- ClassGastropoda
- OrderNeogastropoda
- FamilyCancellariidae
Brocchinia ist die einzige Pflanzengattung der Unterfamilie Brocchinioideae innerhalb der Familie der Bromeliengewächse (Bromeliaceae). Die etwa 20 Arten sind im nördlichen Südamerika verbreitet. Brocchinia-Arten befinden sich nur selten in Kultur, am verbreitetsten ist Brocchinia reducta. Inhaltsverzeichnis 1 Beschreibung 2 Besonderheiten 2.1 Karnivorie und Präkarnivorie 2.2 „Ameisenpflanze“ 3 Standorte 4 Systematik und Verbreitung 5 Quellen 5.1 Einzelnachweise 6 Weblinks Beschreibung Habitat von Brocchinia tatei am Roraima-Tepui Brocchinia-Arten wachsen als ausdauernde krautige Pflanzen. Die Laubblätter stehen in einer Blattrosette zusammen. Die einfachen Laubblätter sind glattrandig und besitzen nur einen Endstachel. Der Blütenstand (Infloreszenz) wächst aufrecht und besitzt grüne Hochblätter (Brakteen). Die kleinen, unauffälligen Blüten sind radiärsymmetrisch und dreizählig. Die drei Kronblätter sind weiß bis grün. Blütenformel: ⋆ K 3 C 3 A 3 + 3 G ( 3 ) _ {displaystyle star ;K_{3};C_{3};A_{3+3};G_{underline {(3)}}} Sie bilden Kapselfrüchte mit vielen kleinen flugfähigen Samen. Besonderheiten Karnivorie und Präkarnivorie Brocchinia reducta und Brocchinia hechtioides unterscheid
via · Kew POWO
Museum specimens
- Specimen records
- 33
- With media
- 18
- Family
- Bromeliaceae
- Collections
- US, F, MO, SEL, NY, MNHN
- Recorded in
- Guyana, Venezuela, Colombia, Netherlands, Germany, Ile Amsterdam, Bismarck Sea, Brasil
~6 min read
Encyclopedic overview
3 sectionsContents
- Species
- References
- External links
Brocchinia is a genus of the botanical family Bromeliaceae, and is the sole genus of the subfamily Brocchinioideae, containing 20 species. The genus is named after Giovanni Battista Brocchi, Italian naturalist (1772–1826). Brocchinia species are native primarily to the ancient Guayana Shield in southern Venezuela and Guyana, with some species extending into Colombia and northern Brazil. Its species are generally restricted to areas of sand and sandstone of the Roraima Formation; a few occur on granite.
Based on chloroplast DNA sequence variation, Brocchinia appears to be sister to all other bromeliads. Calibration of the molecular family tree of bromeliads against the known ages of various fossil monocots suggests that Brocchinia lineage diverged from other bromeliads nearly 20 million years ago, and that some of the living species of Brocchinia began diverging from each other soon thereafter. The next lineage to diverge from other bromeliads included Lindmania and Connellia, which are also endemic to the Guayana Shield; at least one other subfamily Navioideae is also almost entirely restricted to that region. Consequently, it is quite likely that the family as a whole arose in the Guayana Shield. Previously, Brocchinia was thought to be a member of the bromeliad subfamily Pitcairnioideae, based on its possession of winged seeds like those seen in other members of that group. This view has now been overturned after the recognition that Pitcairnioideae as originally circumscribed more than a century ago represents several morphologically similar but independently derived groups that share only ancestral (plesiomorphic) characters, not true synapomorphies (shared derived characters).
Excerpted from Wikipedia’s “Brocchinia” article, available under the CC BY-SA 4.0 licence.