Annona angustifolia

Annona angustifolia is a species of plant in the Annonaceae family. It is native to Brazil.[1] Jacques Huber, the Swiss-Brazilian botanist who first formally described the species, named it after its narrow (angustus in Latin) leaves (folium in Latin).[2][3]

Annona angustifolia
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Magnoliids
Order: Magnoliales
Family: Annonaceae
Genus: Annona
Species:
A. angustifolia
Binomial name
Annona angustifolia

Description

It is a bush with slender branches. Its leaves are arranged in two opposite rows on the branches. Its narrow, smooth, membranous leaves are 6-12 centimeter by 1.2-1.5 centimeters. Its solitary flowers are on 1 centimeter long pedicels that have a small breacteole about half way up from their base. Its triangular sepals are 2 by 3 millimeters, come to a tapering point at their tips, and are covered in short rust-colored hairs. Its thick exterior petals are round, 1.5 by 1.5 centimeters, concave, and have rust-colored hairs on their inner surface. Its inner petals are thinner, come to a sharp point a their tips and are 8 millimeters long. Its flowers have numerous stamens with filaments that are about 0.5 millimeters long, and 1.5 millimeter long, yellow anthers. The tissue connecting the lobes of the anther forms a cap like structure at its top. Its flowers have numerous ovaries with silky yellow styles and white stigmas.[3]

Reproductive biology

The pollen of Annona angustifolia is shed as permanent tetrads.[4]

Distribution and habitat

It grows in forested areas.[3]

References
  1. "Annona angustifolia Huber". Plants of the World Online. The Trustees of the Royal Botanic Gardens, Kew. n.d. Retrieved December 22, 2018.
  2. Stearn, William (2004). Botanical Latin. Portland, Ore. Newton Abbot: Timber Press David & Charles. ISBN 9780881926279.
  3. Huber, J. (1909). "Materiaes para a Flora Amazonica VII. Plantae Duckeanae Austro-guyanenses". Boletim do Museu Goeldi (Museu Paraense) de Historia Natural e Ethnographia (in Portuguese and Latin). 5: 294–436.
  4. Walker, James W. (1971). "Pollen Morphology, Phytogeography, and Phylogeny of the Annonaceae". Contributions from the Gray Herbarium of Harvard University. 202: 1–130. JSTOR 41764703.
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