Biology:Annona haitiensis
| Annona haitiensis | |
|---|---|
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Magnoliids |
| Order: | Magnoliales |
| Family: | Annonaceae |
| Genus: | Annona |
| Species: | A. haitiensis
|
| Binomial name | |
| Annona haitiensis R.E.Fr.
| |
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
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
The pollen of A. haitiensis is shed as permanent tetrads.[4]
References
- ↑ Timyan, J. (2020). "Annona haitiensis". IUCN Red List of Threatened Species 2020: e.T141030847A176440942. doi:10.2305/IUCN.UK.2020-3.RLTS.T141030847A176440942.en. https://www.iucnredlist.org/species/141030847/176440942. Retrieved 19 April 2021.
- ↑ "Annona haitiensis R.E.Fr.". The Trustees of the Royal Botanic Gardens, Kew. n.d.. https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:14272-2.
- ↑ Fries, R.E. (1927). "Die von Ekman in Westindien gesammelten Anonaceen" (in German, Latin). Arkiv för Botanik 21A (9): 1–25.
- ↑ Walker, James W. (1971). "Pollen Morphology, Phytogeography, and Phylogeny of the Annonaceae". Contributions from the Gray Herbarium of Harvard University 202 (202): 1–130.
External links
Wikidata ☰ Q15400409 entry
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