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Annona haitiensis

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

Annona haitiensis is a species of plant in the Annonaceae family. It is endemic to the Caribbean island of Hispaniola.[2] Robert Elias Fries, the Swedish botanist who first formally described the species, named it after Haiti where the specimen he examined was collected.

Description

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It is a bush reaching 1.5 meters in height. Its membranous leaves are 4-6 by 0.7-1.5 centimeters and are rounded or shallowly notched at their tip. The leaf margins are slightly rolled under. The leaves are dull, pale green on their underside. The leaves have 8-10 pairs of secondary veins emanating from their midribs. Its petioles have a channel on their upper surface, are covered with fine hairs, often curve backwards, and are 2-2.5 millimeters long. Its solitary (sometimes in pairs) flowers are on 1-2 millimeter peduncles that emerge from older leafless branches. Its triangular sepals are 1 millimeters long and covered in brown shaggy hairs. Its 3 oblong, outer petals are 1 centimeter long with rounded tips. The petals have shaggy brown hair on their outer surface. Its stamen are 1.5-1.7 millimeters long with anthers that are 1 millimeters long. Its pistils are 1.7 millimeters long with hairy ovaries and heart-shaped stigmas.[3]

Reproductive biology

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The pollen of A. haitiensis is shed as permanent tetrads.[4]

References

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  1. ^ Timyan, J. (2020). "Annona haitiensis". IUCN Red List of Threatened Species. 2020: e.T141030847A176440942. doi:10.2305/IUCN.UK.2020-3.RLTS.T141030847A176440942.en. Retrieved 19 April 2021.
  2. ^ "Annona haitiensis R.E.Fr". Plants of the World Online. The Trustees of the Royal Botanic Gardens, Kew. n.d. Retrieved June 28, 2019.
  3. ^ Fries, R.E. (1927). "Die von Ekman in Westindien gesammelten Anonaceen" [The Anonacea collected by Ekman in the West Indies]. Arkiv för Botanik (in German and Latin). 21A (9): 1–25.
  4. ^ Walker, James W. (1971). "Pollen Morphology, Phytogeography, and Phylogeny of the Annonaceae". Contributions from the Gray Herbarium of Harvard University. 202 (202): 1–130. JSTOR 41764703.
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