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| Echinosepala truncata Pupulin, L.Álvarez & Bogarín, in Pupulin, Álvarez-Alcázar & Bogarín, 2022. |
Echinosepala truncata is described as new to science and illustrated from the holotype. It is compared with E. tomentosa, from which it differs by the sparsely lanate ovary, the narrowly obovate, apically rounded synsepal, the spathulate, apically and basally rounded petals, and the rectangular, apically truncate lip. The phylogenetic relationships of the new species could be hypothesized based on a shared set of morphological characters and geographic distribution.
Keywords: Peninsula de Osa; Pleurothallidinae; flora of Costa Rica; new species; phylogeny
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| Echinosepala truncata Pupulin, L.Álvarez & Bogarín. a. Habit; b. flower; c. dissected perianth; d. lip, front with lateral lobes spread, front with lateral lobes in natural position and side view; e. column and lip, lateral view; f. anther cap and pollinarium. Drawn by D. Solano Ulate from the holotype. |
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| Flower morphology of a. Echinosepala truncata; b. E. tomentosa (from a. Álvarez 288, b. Bogarín 12945; all JBL). Photos by F. Pupulin. |
Echinosepala truncata Pupulin, L.Álvarez & Bogarín, sp. nov.
Species resembling Echinosepala tomentosa (Luer) Pridgeon & M.W.Chase in the habit and the shape and size of the flower, but easily distinguished bythe sparsely lanate ovary, obovate synsepal, spathulate and apically roundedpetals, and rectangular, apically truncate lip (see also Discussion).
Etymology. From the Latin truncatus, ‘truncate, having the end cut off’, in reference to the apex of the lip.
Franco Pupulin, Leonardo Álvarez-Alcázar and Diego Bogarín. 2022. A just Overtime Discovery: Another New Species of Echinosepala (Orchidaceae) from Costa Rica. Blumea - Biodiversity, Evolution and Biogeography of Plants. DOI: 10.3767/blumea.2022.67.02.03
