Arquivos de periódicos de maio 2021

22 de maio de 2021

So, Is Zephyranths grandiflora actually Z. minuta or is it Z. carinata?

This a continuation of an observation ID posting to https://www.inaturalist.org/observations/2973223.
I've done a bit of a dive into frustrating taxonomy here and this is what I've found.

as for iNat --
a.) when I enter Z. grandiflora into the selection box on iNat it defaults to Z. minuta.
b.) first suggested recommendation choice here is Z. carinata (neither Z. g. or Z. m. are on the short list)

as for FNA
FNA shows no synonymy for Z. grandiflora with any other name and neither Z. minuta nor Z. carinata are described there.

while KEW - Plants of the World:
Z. grandiflora Lind. is a synonym for Z. minuta (KEW-POW shows native range Mexico to Guatamala with no indication of non-native, naturalized status elsewhere)
and
Z. carinata is a separate species with Z. tsouii, Amaryllis carinata and Hippeastrum carinatum as synonyms (none of which are described in FNA). KEW-POW indicates a native range of Mexico to Colombia with non-native, naturalized introduction from TX to FL.
BUT
Further investigation online lead me to the following conclusions:

  1. Z. grandiflora Lind. is by all accounts generally considered to be an illegitimate name.
  2. There are many sources that seem to equate both Z. carinata and Z. minuta to Z. grandiflora Lind. Both species supposedly being sold in the garden trade mostly under the now defunct, delegitimized name Z. grandiflora. And then, of course, there are the hybrids/cultivars.....
  3. I searched high and low for any scientific papers which directly compared Z. carinata and Z. minuta in hopes of being able to distinguish the two and which one would then match up to the description presented by FNA for Z. grandiflora Lind. From a few sources (not really scientific papers) the only real difference between the two that I could discern was that the perianth size of Z. minuta are larger (5.6-9 cm) than that of Z. carinata (4-6 cm). In FNA Z. grandiflora (5.6-9cm) [This would match KEW-POW synonymy with Z. minuta].
  4. I found one paper online by Robert O. Flagg [SE Biology, Vol. 61, No. 1, January, 2014] entitled “Rain-lilies (Amaryllidaceae) of U.S.A. and Mexico” which includes a key to the Zephyranthes species of the continental US. Only species there included was Z. carinata, which is corroborates KEW-POWs ranges showing Z. carinata in TX-FL, but Z. minuta only in Mexico and northern Central America. [This would argue for Z. grandiflora Lind. being in synonymy with Z. carinata].

So ???? if Z. grandiflora Lind. in FNA (indicated as being naturalized from TX-FL) is equivalent to Z. minuta, why does KEW-POW's range map not show it in these areas, but instead places Z. carinata as naturalizing in these areas. Maybe they got their maps mixed up (but then Flagg would be mixed up because he puts Z. carinata in Texas and not Z. minuta)? Or is it that they got the synonymy mixed up ??
Something just doesn’t match up here…..but I can’t figure out what it is.

Posted on 22 de maio de 2021, 09:21 PM by sbdplantgal sbdplantgal | 0 comentários | Deixar um comentário

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