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| Magnolia napoensis F.Arroyo, Á.J.Pérez & A.Vázquez, in Arroyo, Pérez, Machoa, ... et Vázquez-García, 2019. |
Abstract
Magnolia napoensis, a new species from the Amazonian lowlands of Ecuador and Peru is described and illustrated. This species belongs to subsection Talauma; it is similar to M. rimachii in leaf shape but differs from the latter in being taller with a larger diameter and having fewer lateral leaf veins, more numerous hypsophylls, larger flowers, longer outer petals, more numerous stamens and fruits ovoid and ribbed vs. subglobose and smooth. The new species differs from M. neillii by its leaves with fewer lateral veins, glabrous petioles and terminal internodes, more numerous hypsophylls, fewer stamens and ovoid fruits of smaller size, with fewer carpels. Magnolia napoensis is assessed as endangered (EN B2ab(iii)) in accordance with the IUCN criteria.
Keywords: Amazonian lowlands, Ecuador, Magnolia, Peru, Talauma, Magnoliids
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| FIGURE 3. Magnolia napoensis F.Arroyo, Á.J.Pérez & A.Vázquez. A. Habit. B. Bract in flower bud. C. Flower bud. D. Leaves with flower at female phase. E. Efrén Merino climbing the trunk. F. Flower at female phase. G. Stamens and stigmas. Photographs A-G by Alex Dahua, December 2015, at Sarayaku, Pastaza, Ecuador, Dahua-Machoa et al. 2. |
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| FIGURE 4. Magnolia napoensis F.Arroyo, Á.J.Pérez & A.Vázquez. A. Sepals (upper row) and petals (middle and lower row); B-C Fruit. D. Fruit axis with seeds hanging from a thread-like white funiculum. E. Fruit starting dehiscing. F. Fruit showing circumscissile dehiscence. G. Fruit axis without seeds. |
Magnolia napoensis F.Arroyo, Á.J.Pérez & A.Vázquez, sp. nov.
Etymology and ethnobotany:—This species is named after Napo province, Ecuador, where the type material and other collections are located. It is known locally in Kichwa as “ahuayura” (large tree). No use has been recorded for this species.
Frank Arroyo, Álvaro J. Pérez, Alex Dahua Machoa, David A. Neill, Alondra Salome Ortega-Peña and J. Antonio Vázquez-García. 2019. Magnolia napoensis (Subsect. Talauma, Magnoliaceae): A New Species from the Amazonian Lowlands of Ecuador and Peru. Phytotaxa. 427(4); 239–248. DOI: 10.11646/phytotaxa.427.4.2