Abstract
Clusia nubium from southwestern Ecuador is described as a species new to science. It grows as a hemiepiphyte in lower montane cloud forest. The species belongs to Clusia sect. Retinostemon, a largely Andean group characterized by male flowers with a resin-secreting synandrium of completely fused stamens and sometimes also anthers and staminodes. It differs from all other species in that section by the combination of creamy-white petals; male flowers with a dome-shaped synandrium with numerous fused stamens surrounding a group of resin secreting staminodia; and large fruits with 9–15 peltate stigmata forming a ring.
Highlights
The genus Clusia L. (1753: 509) is distributed throughout most of the Neotropics, with the highest species diversity in the northern Andes (Gustafsson et al 2007). Planchon & Triana (1860) divided it into a number of sections, several of which have been supported as monophyletic by molecular phylogenetic studies (Gustafsson & Bittrich 2003, Gustafsson et al 2007)
Retinostemon in the combination of creamy-white petals, turning yellowish brown with age; the presence of a dome-shaped synandrium with well over 150 numerous fertile anthers surrounding a small number of central (15–40), resiniferous staminodia; and large fruits over 5 cm long with 9–15 peltate stigmata arranged in a ring
Discussion:—The new species clearly belongs to C. sect
Summary
The genus Clusia L. (1753: 509) is distributed throughout most of the Neotropics, with the highest species diversity in the northern Andes (Gustafsson et al 2007). Planchon & Triana (1860) divided it into a number of sections, several of which have been supported as monophyletic by molecular phylogenetic studies (Gustafsson & Bittrich 2003, Gustafsson et al 2007). Del suroeste de Ecuador, es descrita como una nueva especie. La especie pertence a la sección Retinostemon, caraterizada por tener flores masculinas con un sinandrio resinifero, compuesto de estambres y a veces también anteras y estaminodios completamente fusionados.
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