Biology:Paposoa

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Paposoa laeta is the only species of the monotypic genus Paposoa in the family Amaryllidaceae endemic to northern and central Chile.[1]

Description

Vegetative characteristics

Paposoa laeta is a bulbous,[2] over 10 cm tall plant with ovoid,[3] tunicate bulbs[2] bearing flat,[4] linear,[2] 30–60 cm long, and 5–9 mm wide leaves.[3]

Generative characteristics

The inflorescence with a hollow,[4] 10–30 cm long, and 2–4 mm wide scape[3] bears 1–7[2] violet to purple,[4] zygomorphic flowers.[3] The flowers have 6 tepals. The androecium consists of 6 stamens. The gynoecium consists of 3 carpels. The trilocular capsule fruit bears flat,[2] shiny, black seeds.[3]

Cytology

The chromosome count is 2n = 16.[3]

Taxonomy

It was described as Rhodophiala laeta Phil. by Rodolfo Amando Philippi in 1860.[4][5] A new genus Eremolirion Nic.García was described by Nicolás García Berguecio in 2019,[3] but due to confusion with the similarly named Eremiolirion J.C.Manning & F.Forest (Tecophilaeaceae), a new genus Paposoa Nic.García and species Paposoa laeta (Phil.) Nic.García was required and published by García in 2020.[6] Within the tribe Hippeastreae, it is placed in the subtribe Traubiinae.[7]

Etymology

The generic name Paposoa refers to Paposo, Chile.[8] The specific epithet laeta means bright,[9]

Distribution and habitat

It occurs in the Atacama and Antofagasta regions,[10][2] where it is found in desert and desert fog oases (Lomas).[10]

Conservation

It has a restricted habitat and distribution.[3]

References

  1. Paposoa Nic.García. (n.d.). Plants of the World Online. Retrieved March 8, 2025, from https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:77210017-1
  2. 2.0 2.1 2.2 2.3 2.4 2.5 Paposoa laeta. (2024, July 26). Fundación R.A. Philippi. Retrieved March 8, 2025, from https://fundacionphilippi.cl/catalogo/paposoa-laeta/
  3. 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 García, N., Meerow, A. W., Arroyo‐Leuenberger, S., Oliveira, R. S., Dutilh, J. H., Soltis, P. S., & Judd, W. S. (2019). Generic classification of Amaryllidaceae tribe Hippeastreae. Taxon, 68(3), 481-498.
  4. 4.0 4.1 4.2 4.3 Philippi, Rodolfo Amando. (1860). Florula Atacamensis; seu, Enumeratio plantarum, quas in itinere per desertum Atacamense (p. 51). Sumptibus E. Anton. https://www.biodiversitylibrary.org/page/58827295
  5. Cite error: Invalid <ref> tag; no text was provided for refs named POWO a
  6. García, N., & Meerow, A. W. (2020). Corrigendum to: García & al., Generic classification of Amaryllidaceae tribe Hippeastreae [in Taxon 68: 481–498. 2019.] Taxon, 69(1), 208-209.
  7. Garcia, N., Fuentes-Castillo, T., Roman, M. J., & Folk, R. A. (2024). Integration of genomic phylogeography, morphological variation and climatic niche reveal speciation mechanisms across southern Andean lilies (Phycella, Hippeastreae, Amaryllidaceae).
  8. Rehbein, C. (2020, June 1). “Paposoa Nic. García” el nuevo género chileno para un tipo de plantas: tiene una sola especie llamada “añañuca rosada” que es pariente del ajo y la cebolla. Publimetro Chile. https://www.publimetro.cl/cl/noticias/2020/06/01/garcia-planta-ananuca-cebolla.html
  9. Aloe laeta A.Berger. (n.d.). LLIFLE - Encyclopedia of Living Forms. Retrieved March 8, 2025, from https://www.llifle.com/Encyclopedia/SUCCULENTS/Family/Aloaceae/12219/Aloe_laeta
  10. 10.0 10.1 Royal Botanic Garden Edinburgh & Fundación Chilco. (n.d.-b). Paposoa laeta (Phil.) Nic.García. The Endemic Plants of Chile. Retrieved March 8, 2025, from https://chileanendemics.rbge.org.uk/taxa/paposoa-laeta-phil-nic-garc%C3%ADa#biogeography

Wikidata ☰ Q102006710 entry