Biology:Phaedranassa

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Phaedranassa is a genus of South American and Central American plants in Amaryllis family, subfamily Amaryllidoideae.[1][2][3][4]

Description

Vegetative characteristics

Phaedranassa are bulbous,[5] perennial[6] herbs[7] with ovate,[8] long-necked bulbs[9] and contractile roots.[10][11] Mature non-contractile roots are 15–30 cm long.[11] The leaves are petiolate.[12]

Generative characteristics

The tall,[7] umbellate inflorescence[5] with a thick, round,[8] hollow scape[8][13] bears 5–15 tubular,[5] inodorous,[12] actinomorphic,[14] pink, red, or yellow, green-banded flowers.[15] The apex of the flowers is green.[16] The stigma and stamens slightly extend beyond the floral tube.[9] The flower has six tepals.[17] The androecium consists of 6 stamens.[17][16] The gynoecium consists of 3 carpels.[8][17] The stigma is clavate.[1] The many-seeded capsule fruit[17] bears papery seeds.[5]

Cytology

The chromosome count is 2n = 46.[12]

Taxonomy

Publication

The genus Phaedranassa Herb. was published by William Herbert in 1845.[18] The type species is Phaedranassa chloracra Herb.[19] (a synonym of Phaedranassa dubia (Kunth) J.F.Macbr.)[20]

Species

As of June 2023, Plants of the World Online accepted the following species:[18]

Formerly included

Several names have been coined using the name Phaedranassa but referring to species now regarded as better suited in other genera (Eucrosia, Rauhia and Stenomesson).[21]

  • Phaedranassa eucrosioides - Eucrosia stricklandii var. stricklandii
  • Phaedranassa loxana - Eucrosia stricklandii var. montana
  • Phaedranassa megistophylla - Rauhia multiflora
  • Phaedranassa multiflora - Rauhia multiflora
  • Phaedranassa rubroviridis - Eustephia coccinea
  • Phaedranassa vitellina - Stenomesson aurantiacum

Ecology

The flowers are bird-pollinated.[12]

Cultivation

Phaedranassa are easily cultivated.[5]

References

  1. ↑ 1.0 1.1 Herbert, William. 1845. Edwards's Botanical Register 31(misc.): page 16 descriptions in Latin
  2. ↑ Herbert, William. 1845. Edwards's Botanical Register 31(misc.): plate 17 plus two subsequent text pages descriptions in Latin, commentary in English; full-page color illustration of Phaedranassa chloracra (syn of P. dubia)
  3. ↑ Stevens, P.F., Angiosperm Phylogeny Website: Asparagales: Amaryllidoideae, http://www.mobot.org/mobot/research/apweb/orders/asparagalesweb.htm#AllAma 
  4. ↑ Jørgensen, P.M. & León-Yánes, S. (eds.) (1999). Catalogue of the Vascular Plants of Ecuador: 1-1181. Missouri Botanical Garden Press, St. Louis.
  5. ↑ 5.0 5.1 5.2 5.3 5.4 Phaedranassa. (n.d.). Pacific Bulb Society. Retrieved February 26, 2025, from https://www.pacificbulbsociety.org/pbswiki/index.php/Phaedranassa
  6. ↑ National Gardening Association. (n.d.). Queen Lily (Phaedranassa). Garden.org. Retrieved February 26, 2025, from https://garden.org/plants/view/528162/Queen-Lily-Phaedranassa/
  7. ↑ 7.0 7.1 Merriam-Webster. (n.d.). Phaedranassa. In Merriam-Webster.com dictionary. Retrieved February 26, 2025, from https://www.merriam-webster.com/dictionary/Phaedranassa
  8. ↑ 8.0 8.1 8.2 8.3 Rumpler, F. (1882). Zweibelgewachse. p. 388. (n.p.): (n.p.).
  9. ↑ 9.0 9.1 Encyklopedie rostlin tropů a subtropů. p. 129. (2023). (n.p.): Albatros Media a.s..
  10. ↑ Rimbach, A. (1898). Die kontraktilen Wurzeln und ihre Thätigkeit. Beitr. Wiss. Bot, 2, 1-28.
  11. ↑ 11.0 11.1 Arber, A.(2010). Monocotyledons: A Morphological Study. p. 19. Vereinigtes Königreich: Cambridge University Press.
  12. ↑ 12.0 12.1 12.2 12.3 Howard, T. M. (2010). Bulbs for Warm Climates. pp. 127–128. Deutschland: University of Texas Press.
  13. ↑ Die Natürlichen pflanzenfamilien nebst ihren gattungen und wichtigeren arten, insbesondere den nutzpflanzen, unter mitwirkung zahlreicher hervorragender fachgelehrten begründet. p. 115. (1888). Deutschland: W. Engelmann.
  14. ↑ Byng, J. W. (2014). The Flowering Plants Handbook: A practical guide to families and genera of the world. Vereinigtes Königreich: Plant Gateway Ltd..
  15. ↑ Chapman, D. (2010, July 5). Phaedranassa. The Bulb Maven. Retrieved February 26, 2025, from https://thebulbmaven.typepad.com/the_bulb_maven/2010/07/phaedranassa.html
  16. ↑ 16.0 16.1 Dietrich, L. F. (2022). Encyklopädie der gesammten niederen und höheren Gartenkunst. p. 733. (n.p.): Bod Third Party Titles.
  17. ↑ 17.0 17.1 17.2 17.3 Bosse, J. F. W. (1861). Vollstandiges Handbuch der Blumen-gartnerei;oder,Genaue Beschreibung fast aller in Deutschland bekannt gewordenen Zierpflanzen, mit Einschluss der Palmen und der vorzuglichsten Strauche und Baume, welche zu Lustanlagen benutzt werden. pp. 87–88. Deutschland: Hahn.
  18. ↑ 18.0 18.1 "Phaedranassa Herb.." (in en). Royal Botanic Gardens, Kew. http://www.plantsoftheworldonline.org/taxon/1584-1. 
  19. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named IPNI
  20. ↑ "Phaedranassa dubia (Kunth) J.F.Macbr." (in en). Royal Botanic Gardens, Kew. http://www.plantsoftheworldonline.org/taxon/66557-1. Retrieved 17 January 2024. 
  21. ↑ Kew World Checklist of Selected Plant Families

Wikidata ☰ Q7180005 entry



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