Codonanthe

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Codonanthe
Codonanthecarnosa.JPG
Codonanthe carnosa
Scientific classification Red Pencil Icon.png
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Lamiales
Family: Gesneriaceae
Subfamily: Gesnerioideae
Genus: Codonanthe
(Mart.) Hanst. [1]
Type species
Codonanthe gracilis
(Mart.) Hanst. [2]
Species

See text.

Synonyms [1]
  • CoccantheraK.Koch & Hanst.
  • ComesBuc'hoz

Codonanthe is a genus of mainly epiphytic plants in the family Gesneriaceae, endemic to the Atlantic Forest of Brazil. The botanical name comes from the Ancient Greek for 'bellflower'. They have white or pale pink flowers and somewhat fleshy leaves. In 2013, the genus was reduced in size when more than half of the species were transferred to Codonanthopsis . They can be grown as houseplants, particularly in hanging baskets. Artificial crosses with Nematanthus hybrids have produced the hybrid genus × Codonatanthus.

Contents

Description

Codonanthe species are subshrubs, generally growing as epiphytes, occasionally on rocks. Unlike Codonanthopsis species, they never grow in ant gardens. They have stems with few branches, which may be upright, creeping or hanging, and often produce roots along their length (adventitious roots). The leaves have a short or very short petiole (stalk), and are fleshy, with either smooth or hairy surfaces. The flowers, produced in the upper leaf axils, on pedicels up to 1 cm (0.4 in) long, are either solitary or in groups of a few together, rarely in the form of a cyme. The five petals are fused at the base with spreading, rounded tips, overall either funnel-shaped or expanded towards the base (ventricose). The flowers are white or pale pink, sometimes with yellow or maroon markings, particularly inside the throat. The four stamens remain within the flowers, and have paired anthers joined by a wide connective. The fruit is a yellowish to dark orange berry with seeds that are 1–1.2 mm (0.04–0.05 in) long. [2]

Taxonomy

The taxon was first described by Carl Friedrich Philipp von Martius in 1829 as a section of the genus Hypocyrta. [3] (Hypocyrta is now regarded as a synonym of Nematanthus . [4] ) It was raised to the full genus Codonanthe by Johannes von Hanstein in 1854. [3] The genus grew to contain about 18 species, but a series of molecular phylogenetic studies showed that it was not monophyletic, some species being more closely related to species of Codonanthopsis than to other Codonanthe species, and in 2013, ten species were transferred to that genus. [2]

In one classification scheme for the family Gesneriaceae, Codonanthe is placed in the subfamily Gesnerioideae, tribe Gesnerieae, subtribe Columneinae. [5] Within the subtribe, it forms a clade with Nematanthus , Codonanthopsis and Lesia : [6] [2]

Lesia

Codonanthopsis

Codanthe

Nematanthus

Species

As of April 2021, Plants of the World Online accepted the following species: [1]

Former species

Distribution and habitat

Codonanthe species are endemic to Brazil, where they are found in the Atlantic Forest. [2]

Cultivation

Codonanthe species are cultivated as ornamental plants. They can be grown in hanging baskets. Their relatively small size and free-flowering habit make them easier to grow than other epiphytic members of the family Gesneriaceae, although their flowers are smaller and less colourful than those of some other genera. A well-drained soilless mix is recommended, and humidity levels over 50% improve flowering and fruiting. [7]

Codonanthe gracilis was crossed with Nematanthus hybrids in the United States by W. R. Saylor. Two of the resulting cultivars are × Codonatanthus 'Fiesta' and × Codonatanthus 'Aurora'. [8] [9]

Related Research Articles

Gesneriaceae Family of flowering plants including African violets

Gesneriaceae, the gesneriad family, is a family of flowering plants consisting of about 152 genera and ca. 3,540 species in the tropics and subtropics of the Old World and the New World, with a very small number extending to temperate areas. Many species have colorful and showy flowers and are cultivated as ornamental plants.

Marie Selby Botanical Gardens

The Marie Selby Botanical Gardens is a 15-acre (6.1 ha) botanical garden located at 900 South Palm Avenue in Sarasota, Florida. The Gardens are located on the grounds of the former home of Marie and William Selby.

<i>Episcia</i> Genus of flowering plants

Episcia is a genus of flowering plants in the African violet family, Gesneriaceae. The ten species it contains are native to the tropical regions of Central and South America. The species are perennial herbaceous plants characterized by a stoloniferous habit, red flowers, and frequently have marked or patterned leaves. Episcias are sometimes called flame violets.

<i>Gloxinia</i> (genus) Genus of flowering plants

Gloxinia is a genus containing three species of tropical rhizomatous herbs in the flowering plant family Gesneriaceae. The species are primarily found in the Andes of South America, but Gloxinia perennis is also found in Central America and the West Indies, where it has probably escaped from cultivation.

<i>Columnea</i> Genus of epiphytes

Columnea is a genus of ca. 200 species of epiphytic herbs and shrubs in the flowering plant family Gesneriaceae, native to tropical America and the Caribbean. The tubular or oddly shaped flowers are usually large and brightly colored – usually red, yellow, or orange – sometimes resembling a fish in shape. A common name is flying goldfish plants due to the unusual flower shape.

<i>Achimenes</i> Genus of flowering plants

Achimenes is a genus of about 25 species of tropical and subtropical rhizomatous perennial herbs in the flowering plant family Gesneriaceae. They have a multitude of common names such as magic flowers, widow's tears, Cupid's bower, or hot water plant.

<i>Kohleria</i> Genus of flowering plants

Kohleria is a New World genus of the flowering plant family Gesneriaceae. The plants are generally tropical herbs or subshrubs with velvety stems and foliage and brightly colored flowers with spots or markings in contrasting colors. They are rhizomatous and commonly include a period of dormancy in their growth cycle. The genus was recently revised by Kvist & Skog (1992) and was recognized as having 19 species distributed in Central America and South America. Recent phylogenetic work by Roalson et al. (2005) indicated that the epiphytic genus Capanea is derived from within Kohleria, and the two species of Capanea were subsequently transferred to Kohleria. The genus Pearcea is closely related.

<i>Seemannia</i>

Seemannia is a New World genus in the flowering plant family Gesneriaceae. There are four species in the genus, primarily found in the Andean regions of South America. The name honors the German botanist Berthold Carl Seemann.

<i>Alsobia</i> Genus of flowering plants

Alsobia is a genus of flowering plants in the family Gesneriaceae, native to Mexico, Guatemala, and Costa Rica. It contains two species.

<i>Sinningia</i>

Sinningia is a genus of flowering plants in the family Gesneriaceae. It is named after Wilhelm Sinning (1792–1874), a gardener of the Botanische Gärten der Friedrich-Wilhelms-Universität Bonn. There are about 65 species of tuberous herbaceous perennials, all occurring in Central and South America, with the greatest concentration of species occurring in southern Brazil.

<i>Nematanthus</i> Genus of epiphytes

Nematanthus is a genus of flowering plants in the family Gesneriaceae. All of its species are endemic to Brazil. Compared to other gesneriads, Nematanthus has leaves that are small, succulent, and hard-surfaced. The plant has a trailing, branching, and spreading habit; it is generally an epiphyte in nature and a hanging-basket plant in cultivation. The flower has fused petals. In some species, the flower has a "pouch" at the bottom. The fancied resemblance of such flowers to a goldfish gives these plants the common name "goldfish plant" or "guppy plant".

<i>Columnea consanguinea</i> Species of flowering plant

Columnea consanguinea is a species of flowering plants in the genus Columnea. They are endemic to Colombia, Costa Rica, Ecuador, Nicaragua, and Panama. They are distinctive for possessing red translucent heart-shaped markings on their leaves that serve to attract their main pollinators - the hummingbird Heliodoxa jacula - to their more inconspicuous flowers.

Codonanthopsis elegans is a plant species in the family Gesneriaceae. It is native to Belize.

<i>Corytoplectus</i> Genus of flowering plants

Corytoplectus is a genus in the plant family Gesneriaceae. Plants from Corytoplectus are found in Bolivia, Brazil North, Colombia, Ecuador, Guyana, Mexico Southwest, Peru, Venezuela, in the cloud-forests of the high cordillera. The genus contains c. 12 species. The genus differs from the closely related Alloplectus in having an erect umbellate inflorescence and berries. The type species is C. capitatus.

Gesnerioideae Subfamily of flowering plants

The Gesnerioideae are a subfamily of plants in the family Gesneriaceae: based on the type genus Gesneria. Although genera typically originate in the New World, some species have become widely distributed as ornamental plants.

An ant garden is a mutualistic interaction between certain species of arboreal ants and various epiphytic plants. It is a structure made in the tree canopy by the ants that is filled with debris and other organic matter in which epiphytes grow. The ants benefit from this arrangement by having a stable framework on which to build their nest while the plants benefit by obtaining nutrients from the soil and from the moisture retained there.

<i>Codonanthopsis</i>

Codonanthopsis is a genus of flowering plants in the family Gesneriaceae. Its native range is from southern Mexico through tropical America to Bolivia and most of Brazil. Codonanthopsis species are generally trailing epiphytes with pale flowers. Most have a mutualistic relationship with tree-living ants: the plants provide the ants with food, including nectar, and give their nests structure and support, while the ants disperse the plants' seeds. The genus was considerably expanded in 2013 when species were transferred from Codonanthe. Some Codonanthopsis species are cultivated as houseplants, when they may be grown in hanging baskets.

Cobananthus is a genus of flowering plants in the family Gesneriaceae, with a single species Cobananthus calochlamys. It is sometimes included in the genus Alloplectus, but molecular phylogenetic studies suggest that the two genera are not closely related, with Cobananthus more closely related to Alsobia.

Rufodorsia is a genus of epiphytic flowering plants in the family Gesneriaceae. The genus name refers to the reddish back of the upper lobes of the flower. The relationship of Rufodorsia with the genus Oerstedina is uncertain, as of April 2021. It is native to montane cloud forest in Central America.

Oerstedina is a genus of epiphytic flowering plants in the family Gesneriaceae, native to Mexico, Costa Rica and Panama. The relationship of Oerstedina to the genus Rufodorsia is uncertain, as of April 2021.

References

  1. 1 2 3 "Codonanthe (Mart.) Hanst.", Plants of the World Online, Royal Botanic Gardens, Kew, retrieved 2021-04-06
  2. 1 2 3 4 5 Chautems, Alain & Perret, Mathieu (2013), "Redefinition of the Neotropical Genera Codonanthe (Mart.) Hanst. and Codonanthopsis Mansf. (Gesneriaceae)" (PDF), Selbyana, 31 (2): 143–156, retrieved 2021-04-05
  3. 1 2 "Codonanthe (Mart.) Hanst.", The International Plant Names Index , retrieved 2021-04-06
  4. "Nematanthus Schrad.", Plants of the World Online, Royal Botanic Gardens, Kew, retrieved 2021-04-04
  5. Weber, A.; Middleton, D.J.; Clark, J.L. & Möller, M. (2020), "Keys to the infrafamilial taxa and genera of Gesneriaceae", Rheedea, 30 (1): 5–47, doi: 10.22244/rheedea.2020.30.01.02
  6. Smith, James F. & Clark, John L. (2013), "Molecular Phylogenetic Analyses Reveal Undiscovered Monospecific Genera in the tribe Episcieae (Gesneriaceae)" (PDF), Systematic Botany, 38 (2): 451–463, doi:10.1600/036364413X666723, JSTOR   24546074 , retrieved 2021-04-05
  7. Maxwell, Alcie, "Codonanthe", The Gesneriad Reference Web, The Gesneriad Society, retrieved 2021-04-06
  8. Saylor, W.R. (1978), "The first intergeneric hybrid between Codonanthe and Nematanthus (Gesneriaceae)", Selbyana, 5 (1): 1–3, JSTOR   41759513 , retrieved 2021-04-04
  9. Lentjes, P.W.M. (1986), "Nematanthus-cultivars uit VS en Ierland : Perspectief biedende nieuwe, bloeiende potplanten", Vakblad voor de Bloemisterij (in Dutch), 37: 44–47 Reproduced as Bijlage ('Appendix') 7, pp. 28–30, in Lentjes, P.W.M. (1987). Produktvernieuwing bij Potplanten Gesneriaceae (Intern Verslag nr. 31) (in Dutch). Aalsmeer: Proefstation voor de Bloemisterij in Nederland. Retrieved 2021-04-04.