Isertia

Isertia
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Asterids
Order: Gentianales
Family: Rubiaceae
Subfamily: Cinchonoideae
Tribe: Isertieae
Genus: Isertia
Schreber
Type species
Isertia coccinea
Bartling ex DC
Species

14 species, see text

Isertia is a genus of flowering plants in the family Rubiaceae. It has 14 species,[1] all indigenous to the neotropics.[2] They are shrubs or small trees. A few are cultivated as ornamentals.[3] The type species for the genus is Isertia coccinea.[4]

Isertia was named by Johann von Schreber in 1789.[5][6] The generic name honors the German botanist and explorer Paul Erdmann Isert.[7]

Isertia is divided into two sections: I. sect. Cassupa and I. sect. Isertia. In section Cassupa, the fruit is a berry and the ovary usually has two or three locules. In section Isertia, the fruit is a pyrene, and the ovary usually has five or six locules.[8]

Molecular phylogenetic studies have shown that Isertia is most closely related to Kerianthera, a monospecific genus from Amazonian Brazil.[9]

Species

The following species list may be incomplete or contain synonyms.

  • Isertia coccinea
  • Isertia haenkeana
  • Isertia parviflora

References

  1. ^ Isertia At: World Checklist of Rubiaceae At: Kew Gardens Website. (see External links below).
  2. ^ David J. Mabberley. 2008. Mabberley's Plant-Book third edition (2008). Cambridge University Press: UK. ISBN 978-0-521-82071-4
  3. ^ Anthony J. Huxley, Mark Griffiths, and Margot Levy (editors). 1992. The New Royal Horticultural Society Dictionary of Gardening. The Macmillan Press Limited, London; The Stockton Press, New York. ISBN 978-0-333-47494-5 (set)
  4. ^ Isertia In: Index Nominum Genericorum. In: Regnum Vegetabile (see External links below).
  5. ^ Isertia in International Plant Names Index. (see External links below).
  6. ^ Johann Schreber. 1789. Gen. Pl., ed. 8[a]. (Genera Plantarum Eorumque Characteres Naturales Secundum Numerum, Figuram, Situm, & Proportionem Omnium Fructificationis Partium. (Ed. 8[a])). volume 1, page 234. Frankfurt am Main, Germany. (see External links below).
  7. ^ Umberto Quattrocchi. 2000. CRC World Dictionary of Plant Names volume II. CRC Press: Boca Raton; New York; Washington,DC;, USA. London, UK. ISBN 978-0-8493-2676-9. (see External links below)
  8. ^ Brian M. Boom. 1984. "A revision of Isertia (Isertieae: Rubiaceae)". Brittonia 36(4):425-454. doi:10.2307/2806603
  9. ^ Ulrika Manns and Birgitta Bremer. 2010. "Towards a better understanding of intertribal relationships and stable tribal delimitations within Cinchonoideae s.s. (Rubiaceae)". Molecular Phylogenetics and Evolution 56(1):21-39. doi:10.1016/j.ympev.2010.04.002

External links