Condylocarpon isthmicum

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Condylocarpon isthmicum
Botanical illustration of Condylocarpon isthmicum (using the synonymous name Condylocarpon rauwolfiae)
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Gentianales
Family: Apocynaceae
Genus: Condylocarpon
Species:
C. isthmicum
Binomial name
Condylocarpon isthmicum
Synonyms[1]
  • Echites isthmicus Vell.
  • Condylocarpon brasiliense Mart. ex Müll.Arg.
  • Condylocarpon rauwolfiae (A.DC.) Müll.Arg.
  • Condylocarpon rauwolfiae var. acuminulatum Müll.Arg.
  • Condylocarpon rauwolfiae var. tomentosum Müll.Arg.
  • Maycockia rauwolfiae A.DC.

Condylocarpon isthmicum is a species of plant in the Apocynaceae family. It is native to Argentina, Brazil, Paraguay and Uruguay.[2][3] José Mariano de Conceição Vellozo,[4] the botanist who first formally described the species, named it after the narrow neck (Latinized forms of Greek ἰσθμός, isthmós) connecting the two sections of its fruit.[5][6]

Description

It is a large, woody, climbing plant. Its slender, cylindrical, tapering branches have

sepals are fused at the base which has red-brown markings. The egg-shaped, thin, colorless, sepal lobes are hairless to densely covered in soft hairs and have margins that are fringed with long hairs. The 5 cream-colored to orange petals are fused at their base to form a 1.5–1.8 by 1–1.5 millimeter funnel-shaped tube topped with lobes. The petal lobes have strap-shaped appendages on their left margins that are 2–3 by 0.5–0.8 millimeters. The lower surface of the appendages have red-brown marks. Its egg-shaped to lance-shaped stamen are inserted half-way up the tube of the petals. Its ovaries have free carpels. Each carpels have 5–6 ovules arranged in two rows. Its stigma are orb-shaped. Its woody, hairless, pendent fruit are divided into two long, sections. Each section has several elliptical segments containing one seed. Each seed segment is 1.5–2.5 by 1–1.5 centimeters.[7]

Reproductive biology

The pollen of Condylocarpon isthmicum is shed as permanent tetrads.[8]

Distribution and habitat

It has been observed growing in secondary and gallery forests that sometimes flood.[7]

References

  1. ^ "Condylocarpon isthmicum (Vell.) A. DC". Catalogue of Life. Species 2000. n.d. Retrieved August 6, 2023.
  2. ^ "Condylocarpon isthmicum (Vell.) A.DC". Plants of the World Online. The Trustees of the Royal Botanic Gardens, Kew. n.d. Retrieved August 6, 2023.
  3. ^ "Condylocarpon isthmicum (Vell.) A. DC". Tropicos. Tropicos.org. Missouri Botanical Garden. n.d. Retrieved August 6, 2023.
  4. ^ "José Mariano da Conceição Vellozo". International Plant Names Index (IPNI). Royal Botanic Gardens, Kew; Harvard University Herbaria & Libraries; Australian National Botanic Gardens. Retrieved 2023-08-06.
  5. ^ Vellozo, José Mariano da Conceição (1825). Florae fluminensis, seu, Descriptionum plantarum praefectura Fluminensi sponte mascentium liber primus ad systema sexuale concinnatus [Flora Rio de Janeiro, or, Descriptions of the plants of the Prefecture Rio de Janeiro, the First Book to be Adapted to the Sexual System] (in Latin). Rio de Janeiro: Typographia Nationali.
  6. ISBN 978-0-521-79401-5
    .
  7. ^ a b Fallen, Mary E. (1983). "A Taxonomic Revision of Condylocarpon (Apocynaceae)". Annals of the Missouri Botanical Garden. 70: 149--169.
  8. doi:10.1080/001731301317223114
    .
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