''Zephyranthes'' subg. ''Eithea'' is a

subgenus In biology, a subgenus ( subgenera) is a taxonomic rank directly below genus. In the International Code of Zoological Nomenclature, a subgeneric name can be used independently or included in a species name, in parentheses, placed between the ge ...

of the genus ''

Zephyranthes ''Zephyranthes'' is a genus of temperate and tropical bulbous plants in the Amaryllidaceae, Amaryllis family, subfamily Amaryllidoideae, native to the Americas and widely cultivated as ornamentals. Following the expansion of the genus in ...

'' endemic to Brazil.

Description

Vegetative characteristics

''Zephyranthes'' subg. ''Eithea'' are 12–50 cm tall, bulbous plants with ovoid bulbs and 1–8 pseudopetiolate leaves.

Generative characteristics

The 1–6 pedicellate, zygomorphic, campanulate to infundibuliform flowers are produced on pseudo-umbellate inflorescences with 8–30 cm long, and 2–6 mm wide scapes.

Cytology

The chromosome count is 2n = 18.

Taxonomy

It was first published as ''Eithea'' by

Pedro Felix Ravenna Pierfelice (Pedro Félix, Pierre Félice) Ravenna (1938–2022) was a Chilean people, Chilean botanist of Italian Jews, Italian Jewish origin. His research interests were mainly in the field of South American Amaryllidaceae, Alstroemeriaceae, Als ...

in 2002''Eithea'' Ravenna. (n.d.). International Plant Names Index. Retrieved January 28, 2025, from https://www.ipni.org/n/20007210-1 with ''Eithea blumenavia'' as the type species.Missouri Botanical Garden. (n.d.-l). ''Eithea'' Ravenna. Tropicos. Retrieved January 28, 2025, from https://www.tropicos.org/name/100184394 It was included into the genus ''Zephyranthes'' as ''Zephyranthes'' subg. ''Eithea'' published by

Nicolás García Berguecio Nicolas or Nicolás may refer to: People Given name * Nicolas (given name) Mononym * Nicolas (footballer, born 1999), Brazilian footballer * Nicolas (footballer, born 2000), Brazilian footballer Surname Nicolas * Dafydd Nicolas (c.1705–1774), ...

in 2019.''Zephyranthes'' subgen. ''Eithea'' (Ravenna) Nic.García. (n.d.). International Plant Names Index. Retrieved January 28, 2025, from https://www.ipni.org/n/77203263-1García, 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.

Species

It has two species: *'' Zephyranthes blumenavia'' *'' Zephyranthes lagopaivae''

Conservation

''Zephyranthes blumenavia'' is Endangered (EN), and ''Zephyranthes lagopaivae'' is Critically Endangered (CR).Campos-Rocha, A., Meerow, A. W., Lopes, E. F. M., Semir, J., Mayer, J. L. S., & Dutilh, J. H. A. (2017)
''Eithea lagopaivae'', a new critically endangered species in the previously monotypic genus ''Eithea'' Ravenna (Amaryllidaceae).
PhytoKeys, (85), 45.

References

{{Taxonbar, from=Q93964800, from2=Q5820516 * Plant subgenera Flora of Brazil Endemic flora of Brazil