Molecular and Morphological Evidence Reveals a New Species of Antiphytum (Echiochiloideae, Boraginaceae) from Guerrero, Mexico
2020; American Society of Plant Taxonomists; Volume: 45; Issue: 1 Linguagem: Inglês
10.1600/036364420x15801369352469
ISSN1548-2324
AutoresNidia Mendoza-Díaz, Helga Ochoterena, Michael J. Moore, Hilda Flores‐Olvera,
Tópico(s)Botanical Research and Applications
ResumoAbstract— Molecular and morphological evidence supports a new species in the genus Antiphytum from the Sierra Madre del Sur, in the state of Guerrero, Mexico, here described as Antiphytum brevicalyx . This species is unique in the genus by possessing a calyx shorter than the corolla tube at anthesis; it is similar to A. floribundum in inflorescence arrangement, but differs from that species in lacking a basal leaf rosette and having appendages on the corolla throat. According to phylogenetic analysis of nuclear ITS and plastid ndhF-rpl32 sequences representing seven of the eight North American species of the genus besides the proposed new species, accessions of A. brevicalyx form a well-defined clade within Antiphytum , corroborating its distinctive morphology. However, the analyses do not resolve the phylogenetic position of A. brevicalyx within the genus.
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