Epidendrum x pineiroi Hágsater 2020 GROUP Secundum SUBGROUP Secundum

Inflorescence TYPE LCDP by © R. Jiménez M. & A. Cisneros /TYPE Photo by R. Jiménez M. and The AMO Herbario Website

Common Name Pineiro's Epidendrum [In honor of Fábio Pinheiro (1978-), Brazilian biologist, assistant professor at the Universidade de Campinas, focused on understanding the evolution of reproductive barriers among lineages and populations in a phylogeographic context. He studies a diverse array of mechanisms such as hybridization, introgression and selection for divergent habitats to understand plant speciation within the Neotropical region. He has done important work in the genus Epidendrum in this context]

Flower Size 1" [2.5 cm]

Found along the coast of the southern tip of São Paulo, Santa Catarina and Paraná states of Brazil at low elevations as a large sized, cool to cold growing terrestrial with simple, cane-like, slightly sinuous, terete, thin stems covered by foliar sheaths and carrying articulate, elliptic, apex rounded, coriaceous, smooth, green, margins entire leaves that blooms in the fall without a spathe, peduncle .68 to 1.12" [17 to 28 cm] long, elongate, green, covered by 6 tubular, yellow with brown dots, scarious when dry, striated, papyraceous, imbricated, acute bracts, rachis 3.6" [9 cm] long; producing kiekis from the subapical nodes of the peduncle, 8 to 16.4" [20-41 cm] tall overall, racemose, successively 3 to 6, to 12 flowered inflorescence with much shorter than the ovary, decreasing in size, triangular, acuminate, embracing floral bracts and carrying nonresupinate, nonfragrant flowers with the sepals and petals red, lip orange-red turning to yellow at the disc with red dots, calli and mid-rib yellow, column red, apically yellow and the anther green.

Epidendrum fulgens is found in the sand dunes close to the beach, and E. puniceoluteum in the swamp further inland, with the hybrids adapted to both habitats (Pinheiro 2010: 3983)

"Epidendrum pinheiroi belongs to the GROUP Secundum SUBGROUP Secundum which is characterized by the caespitose habit, erect, simple, cane-like stems, the normally elongate peduncle of the inflorescence, the erect raceme of showy, colorful flowers generally resupinate, and a lip adorned by two calli and a median narrow keel. The hybrid is recognized by the red non-resupinate flowers, the lip orangered, the anther green, the apical lobes of the column, calli and mid-rib of the lip yellow, the yellow spilling onto the disc of the lip with small red dots, the calli are digitiform and upright, not laminar, petals rhombic-spatulate, .296 [7.2 mm] wide, and the lip deeply 3-lobed, base somewhat cordate, lateral lobes sub-quadrate, mid-lobe a narrow isthmus in the basal half, apical half bilobed, these lobes divergent, sub-quadrate, the distal margin laciniate. Epidendrum puniceoluteum, from the southern coast of Brazil, restricted to swamps along the coast, is also very similar; the petals are elliptic, .16 to .308" [4.0 to 7.7 mm], the wider and shorter column has shorter apical lobes, and lip with sub-quadrate calli and has a wider mid-rib. Epidendrum fulgens is more widespread along the coast throughout São Paulo, Paraná, Santa Catarina, and the northern half of Rio Grande do Sul, and has red flowers, the lip yellow dotted red, flowers non-resupinate, facing towards the center of the raceme, endemic to the restinga sand dunes along the coast from São Paulo to Santa Catarina." Hagsater etal 2020

Synonyms

References W3 Tropicos, Kew Monocot list , IPNI ; * Icones Orchidacearum 17(2) Plate 1787 Hagsater & Jimenez 2020 TYPE Drawing/Photo fide;

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