Xylopia macrantha
Herbarium specimen of Xylopia macrantha[1]
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Magnoliids
Order: Magnoliales
Family: Annonaceae
Genus: Xylopia
Species:
X. macrantha
Binomial name
Xylopia macrantha

Xylopia macrantha is a species of plant in the Annonaceae family. It is native to Colombia, Costa Rica and Panama.[3] José Jerónimo Triana and Jules Émile Planchon, the botanists who first formally described the species, named it after its large flowers (Latinized forms of Greek μακρoς, macros and ανθος, anthos).[4][5]

Description

It is a tree. The young branches are covered in long silky hairs. Its narrow, oblong, leathery leaves are 9-12 by 3-4 centimeters. The bases of the leaves are rounded, and their tips taper to a point. The leaves are shiny and hairless on their upper surfaces. The undersides of the leaves are reddish, particularly near the midrib. The undersides of the leaves have long soft hairs that lay flat. Its petioles are 3-4 millimeters long. Its solitary Inflorescences occur in the axils of leaves on short, 5-6 millimeter long pedicels. Its large flowers have 3 sepals that are fused to form bell-shaped calyx that are 8-10 by 10-11 millimeters. The lobes of the calyx are triangular, covered in silky hairs, and have shallowly pointed tips. Its 6 petals are arranged in two rows of 3. The thick, rigid, oblong outer petals have broad bases and are 20-23 by 8 millimeters. The outer surfaces of the outer petals are covered in soft hairs, their inner surfaces have grey woolly hairs. The inner petals are shaped like a quadrangular prism and have a 3 millimeter diameter. The inner petals have very pointed tips. The flowers have stamen that are 1.5-2 millimeters long. The flowers have about 45 carpels. The flowers have linear ovaries set within cup-shaped receptacles.[2][5][6]

Reproductive biology

The pollen of Xylopia macrantha is shed as permanent tetrads.[7]

Distribution and habitat

It has been observed growing in tropical rainforests and seasonal forests at elevations of 0-550 meters.[2][5]

References

  1. ↑ "Xylopia macrantha Triana & Planch". Tropicos. Tropicos.org. Missouri Botanical Garden. n.d. Retrieved August 20, 2023.
  2. 1 2 3 Verspagen, N.; Erkens, R.H.J. (2019). "Xylopia macrantha". IUCN Red List of Threatened Species. 2019: e.T140934046A140934048. doi:10.2305/IUCN.UK.2019-3.RLTS.T140934046A140934048.en. Retrieved 21 June 2022.
  3. ↑ "Xylopia macrantha Triana & Planch". Plants of the World Online. The Trustees of the Royal Botanic Gardens, Kew. n.d. Archived from the original on June 21, 2022. Retrieved June 21, 2022.
  4. ↑ Stearn, William (2004). Botanical Latin. Portland, Ore. Newton Abbot: Timber Press David & Charles. ISBN 9780881926279.
  5. 1 2 3 Triana, J.; Planchon, J.E. (1862). "Prodromus Florae Novo-Granatensis ou Énumération Des Plantes de la Nouvelle-Grenade Avec Description des Espèces Nouvelles". Annales des Sciences Naturelles. 4 (in French and Latin). 17: 5–349. Archived from the original on 2022-06-21. Retrieved 2022-06-21.
  6. ↑ Duke, J.A. (1962). "Flora of Panama. Part IV. Fascicle V". Annals of the Missouri Botanical Garden. 49 (3/4): 137–255. JSTOR 2394708.
  7. ↑ 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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