Malvaceae neotropicae novae vel minus cognitae X. New species of Quararibea from Colombia and Ecuador

Abstract

In this advance of the taxonomic revision that is being carried out in the genus Quararibea (Malvaceae) for the north of South America, three new species are described in this contribution, which are compared morphologically with the species considered related in each case. A first, Q. cornejoi, known from the wet forests of western Ecuador that we associate with Q. grandifolia and Q. casasecae, taxa also distributed in the Pacific corridor of Ecuador and Colombia. A second species, Q. latilimbata, from the sub-Andean forests of the Central Cordillera of the Department of Antioquia, Colombia, related to the previous species and to the Amazonian species Q. duckei. All of them with an unusual trait in the genus, an androecium with the long staminal branches. Finally, Q.villanuevae, from the dry forests of the upper Magdalena Valley in the Department of Tolima, Colombia, associated with the Andean species Q. foenigraeca and Q. caldasiana. These last three species, which have androecium with smaller staminal branches, are assigned to a different morphological group. Illustrations and detailed photographs of the new species are included as well as keys to the identification of the treated species.

Matisia gentryi and M. tinamastiana (Malvaceae), two species newly recorded from Panama and an updated key to Matisia species in this country

“…Thus, Matisia differs by its 5-locular ovaries, its staminal tube, which is typically zygomorphic and deeply lobed at the apex-with lobes longer than 4 mm-and the absence of the characteristic fenugreek-or licorice-like smell in dry samples. The latter attribute is usually characteristic of Quararibea, a genus that is further differentiated because it has 2-4 locular ovaries, a radially symmetrical staminal column, and distally toothed or lobed, lobes shorter than 4 mm, or rarely torn-digitated with lobes longer than 4 mm (Fernández-Alonso 1996, 1999Alverson and Steyermark 1997;Fernández-Alonso 2021).…”

Cuatro nuevas especies de Quararibea “grupo grandifolia” (Malvaceae) de Colombia y Ecuador

“…El "grupo grandifolia" incluye al menos 13 especies de árboles o arbolitos que presentan androceo con la columna estaminal distalmente rasgado-digitada de simetría radial y ramas estaminales generalmente de 4 mm o más de longitud, un rasgo inusual en este género en el que la mayoría de las especies tiene el androceo con columna estaminal dentada o cortamente lobulada en el extremo distal (Alverson, 1989;Fernández-Alonso, 1996. Aunque esta particularidad del androceo en este grupo de especies de Quararibea las acerca al género Matisia Bonpl., la presencia en este último del androceo con simetría bilateral y cinco carpelos en el gineceo, permite separar a este otro género de forma clara (Fernández-Alonso, 2021). Este "grupo grandifolia" se encuentra principalmente diversificado en el occidente de Colombia y Ecuador (siete especies) y en las cuencas de los ríos Magdalena y Cauca en Colombia (cuatro especies) (Fernández-Alonso & Castroviejo, 2001; Fernández-Alonso, 2021, Fernández-Alonso & Cornejo, 2021).…”