Martinez-Velarde M. F., Rodrigues-Vaz C., Soule Vincent, Nge F. J., Schatz G. E., Couvreur Thomas, Ortiz-Rodriguez A. E. (2023). Desmopsis terriflora, an extraordinary new species of Annonaceae with flagelliflory. Phytokeys, (227), p. 181-198. ISSN 1314-2011.
Titre du document
Desmopsis terriflora, an extraordinary new species of Annonaceae with flagelliflory
Martinez-Velarde M. F., Rodrigues-Vaz C., Soule Vincent, Nge F. J., Schatz G. E., Couvreur Thomas, Ortiz-Rodriguez A. E.
Source
Phytokeys, 2023,
(227), p. 181-198 ISSN 1314-2011
Flagelliflory refers to the production of inflorescences exclusively on long, whip-like branches which emerge from the main trunk and extend along the ground or below it. It is the rarest type of cauliflory and only a few cases have been reported in the world. Here, a new species of Annonaceae with flagelliflory is described and illustrated. The phylogenetic relationships of the new species were inferred using a hybrid-capture phy- logenomic approach and we present some notes on its reproductive ecology and pol- len characteristics. The new species, namely Desmopsis terriflora sp. nov., is part of a clade composed of Mexican species of Stenanona with long, awned petals. Desmopsis terriflora is distinguished by its flageliflorous inflorescences, basely fused sepals, thick red petals, reduced number of ovules per carpel, pollen grains with a weakly rugulate to fossulate exine ornamentation, and its globose, apiculate fruits with a woody tes- ta. The morphological characteristics of the flagella suggest that these are specialized branches rather than inflorescences, and the absence of ramiflory implies an exclusively reproductive function. The flowers are infrequently visited by insects, their potential pol- linators being flies and ants.
Plan de classement
Sciences du monde végétal [076]
;
Etudes, transformation, conservation du milieu naturel [082]
