A Taxonomic Reevaluation of the South American Myosotis Species Described by Jose Arechavaleta
Por:
Mendoza-Diaz, Nidia, Bonifacino, Jose M., Diaz, Marina, Flores-Olvera, Hilda
Publicada:
1 ene 2022
Resumen:
In Flora Uruguaya, Jose Arechavaleta described two Uruguayan species of
Myosotis L. (Boraginaccae) that I. M. Johnston later placed within
Antiphytum DC. ex Meisn. Johnston considered M. uruguayensis Arechay. to
be a doubtful species that was probably in Antiphytum, apparently
nearest to A. cruciatum (Chem.) DC., whereas he treated M. berroi
Arechay. as a synonym of A. stoechadifoliurn (Chain.) DC. We studied the
type specimens and protologues of these two names in Myosotis. We
conclude that M. berroi belongs to Antiphytum but is not conspecific
with A. stoechadifolium based on cremocarp features, such as pericarp
ornamentation and size, together with shorter leaves. We provide an
updated circumscription and distribution, publish the new combination A.
berroi (Arechay.) N. Mend. & Flores Olv., and clarify the type. A
taxonomic key for the South American species of Antiphytum is provided.
Myosotis uruguayensis does nol belong to Aruiphyturn due to its
shallowly divided calyx entirely covering the immature eremocarps; it
retains its uncertain taxonomic status due to the scanty and immature
original material and inadequate protologue.
Filiaciones:
Mendoza-Diaz, Nidia:
Univ Nacl Autonoma Mexico, Inst Biol, Ciencias Biol, 3er Circuito Exterior S-N, Ciudad De Mexico 04510, Mexico
Bonifacino, Jose M.:
Univ Republica, Fac Agron, Lab Bot, Av Canon 780, Montevideo 12900, Uruguay
Diaz, Marina:
Univ Republica, Fac Agron, Lab Bot, Av Canon 780, Montevideo 12900, Uruguay
Flores-Olvera, Hilda:
Univ Nacl Autonoma Mexico, Inst Biol, Dept Bot, Apartado Postal 70-233, Ciudad De Mexico 04510, Mexico
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