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Anchietea
Anchietea pyrifolia
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Malpighiales
Family: Violaceae
Subfamily: Violoideae
Tribe: Violeae
Genus: Anchietea
A.St.-Hil. [1] [2] [3]
Type species
Anchietea pyrifolia
Species
Synonyms [2]

Anchietea is a genus of flowering plants in the violet family Violaceae, with six accepted species, found in tropical South America.

Description

Lianas or reclining shrubs with oblong-lanceolate to ovate leaves. The flowers, which may be unisexual or bisexual, are in axillary racemoids or fascicles, with a white to orange corollas that are strongly zygomorphic (bilaterally symmetrical) with the long bottom petal weakly differentiated with a well exserted (projecting) spur. On the five stamens, the filaments are strongly connate (fused) with the two lowest anthers calcarate (spurred) and possessing a small dorsal connective appendage that is entire and ovate. In the gynoecium, the style is rostellate (beaked). The fruit is a very thin walled bladder-like capsule. There are many seeds per carpel, that are orbicular in outline and strongly flattened and encircled with a low interrupted ridge, or broad wing. [5] [6] [7] The genus is characterized by membranaceous inflated capsules that usually prematurely expose the strongly flattened seeds to maturation. [8]

Taxonomy

The genus Anchietea was first described by Saint-Hilaire in 1824, with a single species Anchietea salutaris, which thus is considered the type species. [9] Therefore, the genus bears his name, A.St.-Hil., as the botanical authority. [4] Shortly before this, Martius had described a species in a related genera, Noisettia pyrifolia. [10] In 1831, Don transferred this species to Anchietea, noting that the specific epithet pyrifolia referred to "pear-shaped leaves". [11] [12] A revision of the genus in 2013 identified A. salutaris and A. pyrifolia as conspecific, and since A. pyrifolia had priority (as Noisettia pyrifolia) it is the type species. [12]

Early taxonomic schemes, primarily based on floral morphology, such as Bentham and Hooker (1862) [13] placed Anchietea within subfamily Violoideae, tribe Violeae, subtribe Violinae. [6] [14] Anchietea is one of four lianescent genera in Violaceae, together with Calyptrion Ging., Agatea A.Gray and the more recently discovered (2003) Hybanthopsis Paula-Souza. [15] Historically, these genera were distributed among separate subtribes, with Anchietea within subtribe Violinae with Calyptrion and Hybanthopsis and Agatea in subtribe Hybanthinae. [5] [14]

Molecular phylogenetic studies have now grouped these four genera together into a single lianescent clade, one of four within the family Violaceae. [7]

Etymology

The genus Anchietea is named for the sixteenth century Jesuit missionary and naturalist Joseph of Anchieta, who described the Brazilian flora. [11] [16]

Species

  • Anchietea ballardii Paula-Souza
  • Anchietea exaltata Eichler
  • Anchietea ferrucciae Paula-Souza & Zmarzty
  • Anchietea frangulifolia (Kunth) Melch.
  • Anchietea pyrifolia (Mart.) G.Don
  • Anchietea sellowiana Cham. & Schltdl.

Estimates of the number of species in Anchietea has varied considerably between five [5] [17] and nine, [1] [2] but historically, the genus has been poorly described and new species have continued to be described. Paula-Souza and colleagues recognize six species, [18] [8] [7] having added A. ferrucciae in 2010 as a new description [8] and A. ballardii in 2016. [19] [20]

Distribution and habitat

Extra-Amazonian South America, in the Seasonally Dry Tropical Forests (SDTF) of South America. [19] [21] [2]

References

Bibliography

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