taxonID	type	description	language	source
610ED54E1FE85EAFA7B628F83DBFF019.taxon	description	Figs 1, 2, 3 A, 4	en	Damián-Parizaca, Alexander, Monteros, Marco Federico, Coayla Rimachi, Daxs, Walston, Joseph, Mitidieri-Rivera, Nicole (2025): A new species of Pleurothallis (Pleurothallidinae, Orchidaceae) from the historic sanctuary of Machupicchu, Perú. PhytoKeys 254: 29-40, DOI: 10.3897/phytokeys.254.142116
610ED54E1FE85EAFA7B628F83DBFF019.taxon	diagnosis	Diagnosis. Pleurothallis machupicchuensis is most similar to Pleurothallis scurrula Luer but differs by the obtuse dorsal sepal (vs. acute), the acute synsepal apex (vs. obtuse to rounded), the falcate petals (vs. oblong-ovate), the ovate lip (vs. oblong), and the reniform bilobed glenion (vs. oblong non bilobed).	en	Damián-Parizaca, Alexander, Monteros, Marco Federico, Coayla Rimachi, Daxs, Walston, Joseph, Mitidieri-Rivera, Nicole (2025): A new species of Pleurothallis (Pleurothallidinae, Orchidaceae) from the historic sanctuary of Machupicchu, Perú. PhytoKeys 254: 29-40, DOI: 10.3897/phytokeys.254.142116
610ED54E1FE85EAFA7B628F83DBFF019.taxon	description	Description. Plant epiphytic, caespitose, erect 15 cm tall. Roots slender, flexuose, up to 0.1 cm in diameter. Ramicauls erect, 10 – 15 cm long, 0.1 cm in diameter, slightly curved at the apex forming an angle of about 100 ° in the abscission layer, enclosed by two basal papyraceous, sulcate, brownish, tubular sheaths, 4.0 – 6.5 cm long. Leaf borne at the apex of the ramicaul, suberect to nearly horizontal, pale green, slightly coriaceous, deflexed toward the base, somewhat concave, lanceolate, with a short concavity at the base of the spathe, margins entire, acuminate, 5.0 – 7.7 × 2.0 – 3.0 cm, base sessile, cordate, lobes equal. Inflorescence a single-flowered coflorescence borne erect from a depressed, conduplicate, oblong, obtuse, sub-erect spathe at the base of the leaf, 0.8 – 1.0 cm long, striate, brownish, dry-papyraceous when mature, concealing peduncle, branch system, pseudopeduncle and pedicel; pseudopeduncle terete, up to 0.4 cm long; pedicel yellowish, flexuose, terete, 1.0 – 1.5 cm long; ovary terete, blackish to brownish, furrowed, 0.5 – 0.7 cm long. Flowers non-resupinate, spreading, yellowish to citrine colored, column yellowish to whitish, anther cap and stigma yellowish, lip overall yellowish sometimes with reddish margins. Dorsal sepal erect slightly convex, ovate, glabrous, obtuse, 3 - veined, 1.0 × 0.5 cm. Lateral sepals connate into a broadly ovate synsepal, centrally concave-channeled, obtuse, glabrous, margins entire, 0.8 × 0.6 – 0.7 cm, 4 - veined. Petals strongly reflexed, falcate, 1 - veined, conspicuously papillate on the margins, 0.6 – 0.7 × 0.1 cm. Labellum overall ovate, obtuse at the apex, slightly ascending, strongly verrucose-bullate towards the margins, papillae grouped into clumps of around 5 – 6 papillae, clumps join together to form nearly horizontal linear groups that follow down to the base, centrally sulcate, base acutely deflexed upon itself hinged to the column-foot, 0.3 × 0.2 cm; glenion bilobed, hourglass-shaped, ca. 400 µm wide, ca. 150 µm at its shortest, and ca. 250 µm at its longest length, papillae at the glenion boundary smooth and notably larger and taller, width 25 µm and length 35 µm, papillae found outside of the glenion are highly textured, width 25 µm. Column short, stout, complanate, 0.2 cm long, minutely papilose, rostellar flap long, linear, obtuse. Anther apical, incumbent, anther cap cucullate, ovate, 2 - celled, 0.8 × 0.6 mm. Stigma apical, bilobed, reniform. Pollinia two, narrowly pyriform, 0.1 cm long attached to an elliptic viscidium. Fruit unknown.	en	Damián-Parizaca, Alexander, Monteros, Marco Federico, Coayla Rimachi, Daxs, Walston, Joseph, Mitidieri-Rivera, Nicole (2025): A new species of Pleurothallis (Pleurothallidinae, Orchidaceae) from the historic sanctuary of Machupicchu, Perú. PhytoKeys 254: 29-40, DOI: 10.3897/phytokeys.254.142116
610ED54E1FE85EAFA7B628F83DBFF019.taxon	etymology	Etymology. The epithet honors the llaqta Machupicchu, an Inka citadel in Cusco, southern Peru, located within the Urubamba Province, where P. machupicchuensis is locally distributed.	en	Damián-Parizaca, Alexander, Monteros, Marco Federico, Coayla Rimachi, Daxs, Walston, Joseph, Mitidieri-Rivera, Nicole (2025): A new species of Pleurothallis (Pleurothallidinae, Orchidaceae) from the historic sanctuary of Machupicchu, Perú. PhytoKeys 254: 29-40, DOI: 10.3897/phytokeys.254.142116
610ED54E1FE85EAFA7B628F83DBFF019.taxon	distribution	Distribution and habitat. Pleurothallis machupicchuensis primarily grows on trees of the genus Clusia L. within typical montane forest vegetation. Known populations are located along the Urubamba and Usmubamba Rivers in the provinces of Urubamba and La Convención, respectively, as well as within the Machu Picchu Historic Sanctuary, at elevations ranging from 2000 to 2500 meters (Fig. 2).	en	Damián-Parizaca, Alexander, Monteros, Marco Federico, Coayla Rimachi, Daxs, Walston, Joseph, Mitidieri-Rivera, Nicole (2025): A new species of Pleurothallis (Pleurothallidinae, Orchidaceae) from the historic sanctuary of Machupicchu, Perú. PhytoKeys 254: 29-40, DOI: 10.3897/phytokeys.254.142116
