Zinowiewia sebastianii (Celastraceae), a new high-Andean species from the Colombian Eastern Cordillera
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1 décembre 2017
- handle: 10670/1.fn9n4c
Ce document est lié à :
10.15446/caldasia.v39n2.67316
info:eu-repo/semantics/openAccess
Mots-clés
Angiosperms Critically endangered (CR) species flora of Boyacá flora of Colombia Iguaque Flora and Fauna Sanctuary neotropical plantsSujets proches
Speciation (Biology)Citer ce document
Favio González et al., « Zinowiewia sebastianii (Celastraceae), a new high-Andean species from the Colombian Eastern Cordillera », Caldasia, ID : 10670/1.fn9n4c
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Résumé
Zinowiewia sebastianii, a new species from high-Andean forests of the Eastern Cordillera at the department of Boyacá (Colombia) is described and illustrated, and its taxonomic affinities are discussed. Individuals of the new species are shrubs to 5 m tall, with interpetiolar, laciniate stipules, leaf blades with 8-11 pairs of lateral veins and entire, plane margin, 2-forked dichasia to 1 x 1 cm, axillary to the distal leaves, calyx, corolla and androecium pentamerous or tetramerous, and two-celled, one-seeded samaras 18-20 x 5-7 mm. Based on the low number of individuals of Z. sebastianii observed within an area of occupancy < 10 km2, in severely fragmented forests, the species is proposed as Critically Endangered (CR), as it faces an extremely high risk of extinction in the wild.