Taxonomic updates in Anthurium sect. Pachyneurium (Araceae) from the Brazilian Atlantic Forest Author Camelo, Mel C. 0000-0002-4602-824X Escola Nacional de Botânica Tropical, Instituto de Pesquisas do Jardim Botânico do Rio de Janeiro, Rua Pacheco Leão, 2040, Rio de Janeiro, Brazil. & melbiologia 2010 @ hotmail. com; https: // orcid. org / 0000 - 0002 - 4602 - 824 X melbiologia2010@hotmail.com Author Temponi, Lívia G. 0000-0003-0449-2703 Herbário UNOP, Universidade Estadual do Oeste do Paraná, Rua Universitária, 1619, Cascavel, Paraná, Brazil. & liviatemponi @ yahoo. com. br; https: // orcid. org / 0000 - 0003 - 0449 - 2703 liviatemponi@yahoo.com.br Author Coelho, Marcus A. N. 0000-0003-1039-6777 Instituto de Pesquisas do Jardim Botânico do Rio de Janeiro, Diretoria de Pesquisas, Rua Pacheco Leão, 915, Rio de Janeiro, Brazil. & mnadruz @ jbrj. gov. br; https: // orcid. org / 0000 - 0003 - 1039 - 6777 mnadruz@jbrj.gov.br Author Baumgratz, José F. A. 0000-0003-3509-293X Instituto de Pesquisas do Jardim Botânico do Rio de Janeiro, Diretoria de Pesquisas, Rua Pacheco Leão, 915, Rio de Janeiro, Brazil. & jbaumgra @ jbrj. gov. br; https: // orcid. org / 0000 - 0003 - 3509 - 293 X jbaumgra@jbrj.gov.br text Phytotaxa 2023 2023-06-06 599 2 109 125 http://dx.doi.org/10.11646/phytotaxa.599.2.3 journal article 10.11646/phytotaxa.599.2.3 1179-3163 8008955 Key to A. pluricarinatum and morphologically similar species 1. Cataphylls persisting as a reticulum of fibers, hairlike; peduncle less than 2× longer than spadix; spadix longer than peduncle...... ........................................................................................................................................................................................ A. plowmanii - Cataphylls with other fibers, not hairlike; peduncle more than 2× longer than spadix; spadix shorter than peduncle......................2 2. Petiole semilunar or obtrapezoidal, sulcate adaxially with acute margins, abaxially ribbed or obtuse; leaf blade with sharply wavy margins; inflorescence erect; spadix cylindric, clavate to rarely tapered...........................................................................................3 - Petiole subcircular, sulcate to canaliculate adaxially with obtuse margins, abaxially obtuse; leaf blade non–wavy or with slightly wavy margins; inflorescence pendent; spadix tapered .......................................................................................................................5 3. Petiole semilunar, sulcate adaxially with acute margins, abaxially surface 3–6-ribbed; spadix cylindric, greenish-vinaceous to purple at anthesis ..................................................................................................................................................... A. pluricarinatum - Petiole obtrapezoidal ..........................................................................................................................................................................4 4. Leaf blade lanceolate to oblong; concolor; inflorescence shorter than half of the adult leaves; spadix tapered, green, gray-brown to purple at anthesis ....................................................................................................................................................... A. paraguayense - Leaf blade elliptic to obovate; discolor; inflorescence longer than half of the adult leaves; spadix cylindric to clavate, yellowish-greenish to yellowish at anthesis ............................................................................................................................................ A. affine 5. Leaf blade up to 20 cm wide, narrowly lanceolate; spathe yellowish to greenishon both surfaces, striated at margins; spadix < 10 cm long, lilac, with stipe 0.3–2.5 cm long.................................................................................................................... A. santaritense - Leaf blade wider than 21 cm , elliptic or obovate; spathe lilac adaxially, greenish abaxially to vinaceous or brownish on both surfaces, absent striations at margins; spadix ≥ 9.5 cm long, vinaceous or brownish, sessile or stipe with 0.4 cm long..................6 6. Peduncle greenish, smooth (never ribbed); spathe lilac on adaxial surface, greenish on abaxial surface; spadix sessile or stipitate ca. 0.4 cm long; pollen yellowish; berries vinaceous at the base, purple at apex; seeds cream............................................. A. leonii - Peduncle vinaceous to brownish, smooth or 1-ribbed; spathe vinaceous to brownish on both surfaces; spadix sessile; pollen whitish; berries entirely vinaceous; seeds yellowish..................................................................................................................... A. solitarium