Iochroma

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Iochroma
Iochroma fuchsioides.jpg
Iochroma fuchsioides
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Solanales
Family: Solanaceae
Subfamily: Solanoideae
Tribe: Physaleae
Genus: Iochroma
Benth.
Species

See text.

Synonyms [1]
  • AcnistusSchott
  • ChaenesthesMiers
  • CleochromaMiers
  • CodochoniaDunal
  • DiplukionRaf.
  • EphaiolaRaf.
  • EplateiaRaf.
  • PederleaRaf.
  • ValtetaRaf.

Iochroma is a genus of about 34 species of shrubs and small trees belonging to the nightshade family Solanaceae. Species are native from Mexico to south Brazil. [1] They are found in the forests of Mexico and South America. Their hummingbird-pollinated flowers are tubular or trumpet-shaped, and may be blue, purple, red, yellow, or white, becoming pulpy berries. The cupular (cup-shaped) calyx is inflated in some species. The leaves are alternate, simple, and entire. [2] [3]

Contents

Iochromas are cultivated as flowering ornamentals and in cooler zones (zones 7–8/9) make useful patio shrubs for summer display or conservatory plants. The majority are not frost-hardy and must be overwintered under protection. In warmer zones (zones 9–10) they can be used as landscape plants. [4] They are commonly trained as standards (topiary) to control their size and shape. Iochroma flowers attract hummingbirds (Americas only) and bees to gardens.

Like many plants in the Solanaceae, Iochroma species contain phytochemicals with potential pharmaceutical value but the genus has not been exhaustively studied in this respect. Iochroma fuchsioides is taken by the medicine men of the Kamsa Indians of the Sibundoy valley in the Colombian Andes for difficult diagnoses, the unpleasant side effects lasting several days. [5] A variety of withanolides [6] and hydroxycinnamic acid amides [7] have been isolated from Iochroma species.

Taxonomy

The genus Iochroma was established by George Bentham in 1845. [1] Like other plant families, the Solanaceae is further divided into subfamilies, tribes and subtribes. Iochroma is in the subtribe Iochrominae along with the genera Dunalia , Eriolarynx , Saracha and Vassobia . [2] [3] As of February 2023, Acnistus, previously treated as a separate genus, was regarded as a synonym of Iochroma. [1]

Species

Iochroma arborescens Acnistus arborescens, known as Hollow Heart (11425729463).jpg
Iochroma arborescens
The Ecuadorian species Iochroma calycinum, syn. I. macrocalyx, Temperate House, Kew Gardens Iochroma calycinum flowers Kew.jpg
The Ecuadorian species Iochroma calycinum , syn. I. macrocalyx, Temperate House, Kew Gardens
Iochroma cyaneum Quinta do Palheiro Ferreiro, Funchal, Madeira. Quinta do Palheiro Ferreiro, Funchal - Madeira, October 2012 (21).jpg
Iochroma cyaneum Quinta do Palheiro Ferreiro, Funchal, Madeira.
The unresolved Mexican species Iochroma coccinea growing in the Temperate House at Kew Gardens Iochroma coccinea Scheidw. Kew.jpg
The unresolved Mexican species Iochroma coccinea growing in the Temperate House at Kew Gardens

The genus is currently divided into three sections.[ citation needed ]As of February 2023, Plants of the World Online accepts the following species: [1]

Section Iochroma

Section Lehmannia

Section Spinosa

Unclassified

Former species

Species formerly placed in the genus Iochroma include:

Cultivation

Several forms of Iochroma (some wild collected, some garden hybrids) have been given cultivar names. Some of the cultivars have been assigned to species but others, mainly hybrids, have not. There may be some synonymy in this list. [10]

Related Research Articles

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

Physalis is a genus of approximately 75 to 90 flowering plants in the nightshade family (Solanaceae), which are native to the Americas and Australasia. At least 46 species are endemic to Mexico. Cultivated and weedy species have been introduced worldwide. A defining feature of Physalis is a large, papery husk derived from the calyx, which partly or fully encloses the fruit. Many species bear edible fruit, and some species are cultivated.

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

Cestrum is a genus of — depending on authority — 150-250 species of flowering plants in the family Solanaceae. They are native to warm temperate to tropical regions of the Americas, from the southernmost United States south to the Bío-Bío Region in central Chile. They are colloquially known as cestrums or jessamines.

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

Browallia is a small genus of seven species of flowering plants belonging to the nightshade family Solanaceae. It is named after Johannes Browallius (1707–1755), also known as Johan Browall, a Swedish botanist, physician and bishop. The genus is closely related to the monotypic genus Streptosolen, the single species of which was published initially under the name Browallia jamesonii.

<i>Nolana</i> Species of plant

Nolana is a genus of hard annual or perennial plants in the nightshade family. The genus is mostly native to Chile and Peru. Species in this genus, especially N. paradoxa, serve as a model system for studies on flower color.

<i>Iochroma arborescens</i> Species of plant

Iochroma arborescens is a species of flowering plant in the genus Iochroma, belonging to the nightshade family Solanaceae. Formerly it was considered the single species in the monotypic genus Acnistus. Common names include gallinero, mata-gallina, fruta-de-sabiá, hollowheart, wild tobacco, siyou, bastard sirio, galán arbóreo, tabaco de monte, nigüito, marieneira, güitite, and tabak djab.

<span class="mw-page-title-main">Physaleae</span> Tribe of flowering plants

Physaleae is a tribe of flowering plants in the subfamily Solanoideae of the family Solanaceae.

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

Nicandra is a genus of flowering plant in the family Solanaceae, native to western South America. It was first described by Michel Adanson in 1763. The genus is named for Greek poet Nicander of Colophon, who wrote about plants – notably in his poem Alexipharmaca, which treats of poisons and their antidotes.

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

Jaltomata is a genus of plants in the family Solanaceae. According to molecular phylogenies, Jaltomata is the sister genus to Solanum, which includes tomato, potato, and eggplant. Jaltomata has a neotropical distribution, in that species occur from the United States southwest through Latin America, and into the Andean region of South America. Species encompass a wide range of vegetative and reproductive trait variation, including growth habit, floral size, shape and color, as well as fruit size and color. The fruits of some of the species are eaten by humans in Latin and South America. Depending on the species, fruits may be red, green, orange, or dark purple.

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

Capsicum is a genus of flowering plants in the nightshade family Solanaceae, native to the Americas, cultivated worldwide for their edible fruit. Bell peppers, sweet peppers and some chili peppers belong to the Capsicum annuum species, making it the most cultivated species from the genus.

<span class="mw-page-title-main">Solanaceae</span> Family of flowering plants that includes tomatoes, potatoes and tobacco

The Solanaceae, or the nightshades, are a family of flowering plants that ranges from annual and perennial herbs to vines, lianas, epiphytes, shrubs, and trees, and includes a number of agricultural crops, medicinal plants, spices, weeds, and ornamentals. Many members of the family contain potent alkaloids, and some are highly toxic, but many—including tomatoes, potatoes, eggplant, bell and chili peppers—are used as food. The family belongs to the order Solanales, in the asterid group and class Magnoliopsida (dicotyledons). The Solanaceae consists of about 98 genera and some 2,700 species, with a great diversity of habitats, morphology and ecology.

<i>Juanulloa</i> Genus of Solanaceae plants

Juanulloa, the goldfingers, are a genus of flowering plants in the family Solanaceae, native to Central and South America.

<i>Witheringia</i> Genus of Solanaceae plants

Witheringia is a genus of flowering plants in the family Solanaceae, with a neotropical distribution. It is closely related to Physalis.

<i>Eriolarynx</i> Genus of Solanaceae plants

Eriolarynx is a genus of flowering plants in the family Solanaceae, found in Peru, Bolivia and northern Argentina. Their trumpet-shaped flowers are pollinated by hummingbirds, and to a lesser extent, bees.

<i>Eriolarynx australis</i> Species of plant in the family Solanaceae

Eriolarynx australis, called mini angel's trumpet or blue angel's trumpet, is a species of flowering plant in the genus Eriolarynx, native to Bolivia and northwest Argentina. It is widely listed in the horticultural literature under the synonym Iochroma australe. It has gained the Royal Horticultural Society's Award of Garden Merit.

Deprea is a genus of flowering plants belonging to the family Solanaceae.

Saracha is a genus of flowering plants belonging to tribe Physaleae of subfamily Solanoideae of the nightshade family Solanaceae. The genera most closely related to Saracha are Iochroma, Dunalia, and Vassobia.

<i>Salpichroa</i> Genus of plants

Salpichroa is a genus of flowering plants belonging to the family Solanaceae.

Leptoglossis is a genus of flowering plants belonging to the family Solanaceae.

References

  1. 1 2 3 4 5 "Iochroma Benth." Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 2023-02-07.
  2. 1 2 Armando T. Hunziker: The Genera of Solanaceae. A.R.G. Gantner Verlag K.G., Ruggell, Liechtenstein 2001. ISBN   3-904144-77-4 pps. 220-226
  3. 1 2 De Witt, S. and Baum, David A. 2006. Phylogenetics of the Florally Diverse Andean Clade Iochrominae ( Solanaceae ) American Journal of Botany 93(8): 1140–1153.
  4. Christopher Brickell ( Ed.), The Royal Horticultural Society Encyclopedia of Garden Plants, pub. Dorking Kindersley 1996 ISBN   0-7513-0303-8, pps. 554–555.
  5. Schultes, R. E. and Hoffman, A. (1992). Plants of the Gods. Their sacred, healing and hallucinogenic powers. Healing Arts Press, Rochester, Vermont. p. 46.
  6. Alfonso, D., Bernardinelli, G. and Kapetanidis, I. (1993). Withanolides from Iochroma coccineum. Phytochemistry 34 (2) : 517–521.
  7. Sattar, E. A., Glasl, H., Nahrstedt, A., Hilal, S. H., Zaki, A. Y. and El Zalabani, S. M. H. (1990). Hydroxycinnamic acid amides from Iochroma cyaneum. Phytochemistry 29 (12) : 3931–3933.
  8. "Iochroma australe Griseb." Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 2023-02-07.
  9. "Iochroma cardenasianum Hunz." Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 2023-02-07.
  10. Shaw, J. M. H. (1998) "A Review of Iochroma in Cultivation". New Plantsman5(3): 154–192.

Constantine, D. R. (2008): Iochroma - an annotated list of the species and cultivars