Article · Wikipedia archive · Last revised Jun 26, 2026

Phaedranassa

Phaedranassa is a genus of South American and Central American plants in Amaryllis family, subfamily Amaryllidoideae.

Last revised
Jun 26, 2026
Read time
≈ 3 min
Length
654 w
Citations
42
Source
Wikipedia ↗
Phaedranassa
Phaedranassa dubia2
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Embryophytes
Clade: Tracheophytes
Clade: Spermatophytes
Clade: Angiosperms
Clade: Monocots
Order: Asparagales
Family: Amaryllidaceae
Subfamily: Amaryllidoideae
Tribe: Eucharideae
Genus: Phaedranassa
Herb.
Type species
Phaedranassa chloracra Herb.1

Phaedranassa is a genus of South American and Central American plants in Amaryllis family, subfamily Amaryllidoideae.3245

Description

Vegetative characteristics

Phaedranassa are bulbous,6 perennial7 herbs8 with ovate,9 long-necked bulbs10 and contractile roots.1112 Mature non-contractile roots are 15–30 cm long.12 The leaves are petiolate.13

Generative characteristics

The tall,8 umbellate inflorescence6 with a thick, round,9 hollow scape914 bears 5–15 tubular,6 inodorous,13 actinomorphic,15 pink, red, or yellow, green-banded flowers.16 The apex of the flowers is green.17 The stigma and stamens slightly extend beyond the floral tube.10 The flower has six tepals.18 The androecium consists of 6 stamens.1817 The gynoecium consists of 3 carpels.918 The stigma is clavate.3 The many-seeded capsule fruit18 bears papery seeds.6

Cytology

The chromosome count is 2n = 46.13

Taxonomy

Publication

The genus Phaedranassa Herb. was published by William Herbert in 1845.19 The type species is Phaedranassa chloracra Herb.1 (a synonym of Phaedranassa dubia (Kunth) J.F.Macbr.)20

Species

As of June 2023, Plants of the World Online accepted the following species:19

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.13

Cultivation

Phaedranassa are easily cultivated.6

References

References

  1. Phaedranassa | International Plant Names Index. (n.d.). Retrieved January 17, 2024, from https://www.ipni.org/n/30014159-2
  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. Herbert, William. 1845. Edwards's Botanical Register 31(misc.): page 16 descriptions in Latin
  4. Stevens, P.F., Angiosperm Phylogeny Website: Asparagales: Amaryllidoideae
  5. Jørgensen, P.M. & León-Yánes, S. (eds.) (1999). Catalogue of the Vascular Plants of Ecuador: 1-1181. Missouri Botanical Garden Press, St. Louis.
  6. Phaedranassa. (n.d.). Pacific Bulb Society. Retrieved February 26, 2025, from https://www.pacificbulbsociety.org/pbswiki/index.php/Phaedranassa
  7. National Gardening Association. (n.d.). Queen Lily (Phaedranassa). Garden.org. Retrieved February 26, 2025, from https://garden.org/plants/view/528162/Queen-Lily-Phaedranassa/
  8. Merriam-Webster. (n.d.). Phaedranassa. In Merriam-Webster.com dictionary. Retrieved February 26, 2025, from https://www.merriam-webster.com/dictionary/Phaedranassa
  9. Rumpler, F. (1882). Zweibelgewachse. p. 388. (n.p.): (n.p.).
  10. Encyklopedie rostlin tropů a subtropů. p. 129. (2023). (n.p.): Albatros Media a.s..
  11. Rimbach, A. (1898). Die kontraktilen Wurzeln und ihre Thätigkeit. Beitr. Wiss. Bot, 2, 1-28.
  12. Arber, A.(2010). Monocotyledons: A Morphological Study. p. 19. Vereinigtes Königreich: Cambridge University Press.
  13. Howard, T. M. (2010). Bulbs for Warm Climates. pp. 127–128. Deutschland: University of Texas Press.
  14. Die Natürlichen pflanzenfamilien nebst ihren gattungen und wichtigeren arten, insbesondere den nutzpflanzen, unter mitwirkung zahlreicher hervorragender fachgelehrten begründet. p. 115. (1888). Deutschland: W. Engelmann.
  15. Byng, J. W. (2014). The Flowering Plants Handbook: A practical guide to families and genera of the world. Vereinigtes Königreich: Plant Gateway Ltd..
  16. 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
  17. Dietrich, L. F. (2022). Encyklopädie der gesammten niederen und höheren Gartenkunst. p. 733. (n.p.): Bod Third Party Titles.
  18. 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.
  19. "Phaedranassa Herb." Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 2023-06-27.
  20. "Phaedranassa dubia (Kunth) J.F.Macbr". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 17 January 2024.
  21. Kew World Checklist of Selected Plant Families