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| Anthurium mayoanum Camelo, Croat & Nadruz, in Camelo, Croat, Coelho & Aylward, 2021. |
Abstract
While studying Anthurium sect. Pachyneurium from Brazil, a new species Anthurium mayoanum was discovered in Floresta de Igapó from Pará State. The species is described and illustrated. The species presents a set of characteristics that are for sect. Pachyneurium, particularly the atypical base of leaf blade and the color of spadix. We have compared this new species with other related taxa of section Pachyneurium and have provided commentary on geographical distribution, conservation status, ecology and phenology.
Keywords: Araceae, Anthurium, Amazon Forest, new species, Pothoidae, section Pachyneurium, Monocots
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| Anthurium mayoanum Camelo, Croat & Nadruz. Details of reproductive characteristics. A. Spadix pre-anthesis. B. Detail of spadix pre-anthesis. C. Inflorescence erect, peduncle cylindric, spadix cylindrical and tapering toward apex, spathe lanceolate. D. Spadix at anthesis. E. Spathe forming acute angle in junction of peduncle and with an ant on spadix. F. Infructescence pendent in natural habitat. G. Infructescence pendent in cultivation. H. Spadix post-anthesis. I. Berry. Photos by Luiz Otavio Adão. |
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| Anthurium mayoanum Camelo, Croat & Nadruz, Plant in cultivation. A Habit. B. Rosulate leaves. C. Cataphylls and truncate base of leaf blade. D. Detail of cataphylls. E. Petiole in adaxial view with one rib. F. Petiole in abaxial view weakly 3-ribbed. G. Mibrid and lateral primary veins prominent in adaxial view. H. Detail of mibrib on adaxial surface. I. Detail of plant in cultivation. Photos by Luiz Otávio Adão. |
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| B. Anthurium mayoanum Camelo, Croat & Nadruz, Habit. A. Igapó Forest (black water flooded forest), among the river banks of Rio Cupari, upstream of the community of São Francisco do Godinho. Photos by Edgar A. Lobato. |
Anthurium mayoanum Camelo, Croat & Nadruz, sp. nov.
Anthurium mayoanum has truncate base leaf blades and coral-colored spadices. Owing to its slightly quadrangular heavily ribbed petioles Anthurium mayoanum is compared with five species. The species is morphologically similar to A. salvinii Hemsley (1879: 36) but the latter species differs by cucullate cataphylls and a pendent inflorescence with dull violet-purple and glaucous spadix; A. mayoanum is also similar to A. affine Schott (1855: 82) which has yellowish and shorter spadix that is thicker toward the apex, infructescences with berries red at the base, purple at the apex; A. mayoanum is also similar to A. macrospadix Lemaire (1862: 20), but the latterspecies has the blades being undulate-crispate on margins and much smaller reflexed spathe (3 cm long); A. mayoanum may also be confused to A. paraguayense Engler (1898: 361) but the latter species has the leaf blades lanceolate to oblong and narrowly acute at the base, a recurved spathe and the spadix green tinged with purple or gray-brown and the infructescences with purple berry; it is also similar to A. plowmanii Croat (1987: 42) but the later species differs by the inflorescence being short pedunculate, the spadix longer than peduncle and green to brown, tinged with violet and violet-purple as well at the red infructescences.
Eponymy:— The specific epithet “mayoanum” is given in honor of Simon Joseph Mayo of Kew Gardens in England whose primary interest has always been Brazil. Simon has mentored many Brazilian students throughout his long career. One of his earliest accomplishments was the revision of Philodendron subgen. Meconostigma, a chiefly Brazilian group but his signature accomplishment was his book The Genera of Araceae written with the late Josef Bogner and Peter Boyce. Now retired Simon lives with his Brazilian wife Lucia south of London.
Mel de Castro Camelo, Thomas B. Croat, Marcus A.N. Coelho and Steve Aylward. 2021. A New Species of ‘Bird’s Nest’ Anthurium sect. Pachyneurium (Araceae) from Brazil. Phytotaxa. 523(3); 229-238. DOI: 10.11646/phytotaxa.523.3.3
