Morfología y anatomía foliar de los géneros del complejo Milla (Themidaceae)

Abstract

Morfología y anatomía foliar de los géneros del complejo Milla (Themidaceae)Foliar morphology and anatomy of genera in the Milla complex (Themidaceae)

Xochiquetzallia (Asparagaceae, Brodiaeoideae), a new genus segregated from the paraphyletic Dandya

“…Also, these authors indicate that in X. thadhowardii the anthers are firmly united among them around the style whereas in X. balsensis they are free. No differences in the morphological and anatomical characters were found between both species (Gutiérrez 2009;Gutiérrez et al 2010Gutiérrez et al , 2015. The analysis carried out by Gutiérrez et al (2017) shows that the population of the here proposed Xochiquetzallia balsensis from the state of Morelos is the only one that differentiates itself by the size of the filaments and the style as proposed by López-Ferrari and Espejo-Serna (1992).…”

“…The staminal connation has been described as "crown or cup" at the base of the stamens and it was considered a diagnostic character for Dandya. Gutiérrez et al (2010) did not find connate stamens in Dandya and Xochiquetzallia in their floral development study of the Milla complex. Moreover, they discovered that what was called "crown or cup" is the base of the filaments that is wider than the upper part and gives the appearance of detaching when the stamens are released asynchronously.…”

“…Moreover, they discovered that what was called "crown or cup" is the base of the filaments that is wider than the upper part and gives the appearance of detaching when the stamens are released asynchronously. Gutiérrez et al (2010), also showed that Bessera is the only genus of the Milla clade that has connate filaments.…”

“…A gynophore was not described for the former species of Dandya now in Xochiquetzallia (X. balsensis, X. hannibalii and X. thadhowardii ;Lenz 1971;López-Ferrari and Espejo-Serna 1992). Gutiérrez et al (2010), when studying the gynophore, checked if it exists in the Xochiquetzallia species. They found that, unlike other genera of the Milla clade, the gynophore is short (< 2 mm) and lacks a pith.…”

“…Morphological characters, vegetative and reproductive, were observed and analyzed with the help of a microscope (Nikon SMZ-2T) and terminology follows various authors (Moore 1953, Lenz 1971, Rahn 1998, Harris and Harris 2001. In addition, floral and foliar anatomical characters (Gutiérrez et al 2010(Gutiérrez et al , 2015 were incorporated. The complete list of 60 characters and characters' states used to delimit the monophyletic groups for the Milla complex can be consulted in Gutiérrez et al (2017).…”