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| Philodendron guadarramanum Díaz Jim., Croat & Aguilar-Rodr., in Díaz Jiménez, Aguilar-Rodríguez, Croat, Cedeño-Fonseca, Montano, Yovel et Macswiney G. 2020. . Phytotaxa. |
Abstract
We describe and illustrate Philodendron guadarramanum, a new species of Araceae from Tabasco, Mexico. This species grows in montane cloud forest and evergreen tropical rainforest at elevations between 700 and 1100 m. It is similar to Philodendron purulhense, but differs from that species by having petioles broadly and sharply sulcate adaxially, with an acute medial rib, leaf blades with more basal veins and more primary lateral veins per side, and inflorescences more numerous per axil.
Araceae, endemic, Mexico, Philodendron, Tabasco, Monocots
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| Philodendron guadarramanum Díaz Jim., Croat & Aguilar-Rodr., sp. nov. A. Stem with old remains of cataphylls, closed inflorescences, a partial portion of the petiole, and the partial adaxial surface of a new blade; B. Stem covered with old cataphylls degrading and persisting as fiber masses; C. Inflorescence in post-anthesis with a longitudinal cut of the spathe showing the reddish purple inner surface of the spathe tube, and (from bottom-up) pistillate, sterile, and staminate portions of the spadix; D. Partial portion of the spadix showing pistillate portion (bottom) with the styles rounded at the apex, and the portion sterile (up) broader than pistillate portion; E. Partial view of leaves, showing the adaxial surface of a petiole (note the acute medial rib) and adaxial and partial abaxial surfaces of leaf blades. Scale bars: A = 10 cm; B = 3 cm; C = 5 cm; D = 1.5 cm. |
Philodendron guadarramanum Díaz Jim., Croat & Aguilar-Rodr., sp. nov.
Eponymy:—The species is named in honor of the Mexican botanist, M.C. María de los Ángeles Guadarrama Olivera, who for many years directed and supported the study of the flora of Tabasco. María de los Ángeles is an expert in Commelinaceae. She was a professor and director of the herbarium (UJAT) of the Universidad Juarez Autónoma de Tabasco and is now retired.
Pedro Díaz Jiménez, Pedro A. Aguilar-Rodríguez, Thomas B. Croat, Marco Cedeño-Fonseca, Martin Alarcón Montano, Yossi Yovel and M. Cristina Macswiney G. 2020. Philodendron guadarramanum (Araceae), A New Species from Tabasco, Mexico. Phytotaxa. 468(3); 296-300. DOI: doi.org/10.11646/phytotaxa.468.3.5
