Synopsis of the species of Cheilolejeunea (Marchantiophyta, Lejeuneaceae) in the Pacific dominion and Páramo province of tropical America Author Gil-Novoa, Jorge Enrique Programa de Pós-graduação em Botânica, Escola Nacional de Botânica Tropical, Instituto de Pesquisas Jardim Botânico do Rio de Janeiro. Rua Pacheco Leão, Horto, 2040, 22460 - 080, Rio de Janeiro-RJ, Brazil. & Grupo Sistemática Biológica, Herbario UPTC, Universidad Pedagógica y Tecnológica de Colombia, Tunja, Boyacá, Colombia. Author Costa, Denise Pinheiro 0000-0001-9495-3029 Instituto de Pesquisas Jardim Botânico do Rio de Janeiro - IPJBRJ, Rua Pacheco Leão 915, 22460 - 030, Rio de Janeiro, RJ, Brazil. denisepinheirodacosta @ gmail. com; https: // orcid. org / 0000 - 0001 - 9495 - 3029 denisepinheirodacosta@gmail.com text Phytotaxa 2023 2023-03-14 587 2 73 120 http://dx.doi.org/10.11646/phytotaxa.587.2.1 journal article 234670 10.11646/phytotaxa.587.2.1 f3baa327-db9d-4576-b017-96a05242bbed 1179-3163 7731813 23. Cheilolejeunea paramicola (Herzog) Ye et al. (2015: 326) .— Brachiolejeunea paramicola Herzog (1934: 95) . Type:— COLOMBIA . Cundinamarca : Páramo El Boquerón bei Bogotá , 3500 m , C. Troll 2165 ( holotype JE).— Fig. 14J–Q . Plants dark brown to light brown, 0.9–1.7 mm wide. Stems in cross section 130–160 µm in diameter, 20–24 epidermal cells in cross section, 15–38 × 9–23 µm; 21–31 medullary cells, 13–19 × 9–25 µm. Ventral merophytes 6–8 cells wide. Leaves subimbricate to imbricate, ovate, flat to slightly recurved at the apex, 870–1350 × 570–880 µm, margin entire, apex rounded, dorsal and ventral margin curves; cells hexagonal to long-hexagonal, mammillose on the dorsal side, conspicuous trigones; basal cells 14–30 × 8–13 µm, median cells 11–17 × 6–11 µm, marginal cells 8–12 × 4–8 µm. Lobules rectangular, ca. 1/2 of leaf length, margin free flat, apical tooth obtuse, keel arched. Underleaves subimbricate to imbricate, orbicular to reniform, 560–800 × 680–980 µm, 4–6 × stem width, margin entire, insertion U-shaped. Autoicous. Androecia on short branches, 4–6 pairs of bracts. Gynoecia on the main stem, with lejeuneoid innovations, bracts ovate, 1200 × 680 µm, apex acute, bracts lobule 620 × 300 µm, bracteole ovate 900 × 800 µm. Perianth pluriplicate, with 5–6 strong keels and 4–5 additional weaker keels, beak short. Vegetative reproduction unknown. Distribution and habitat :—Restricted to the mountains of the northern Andes, occurring in Venezuela , Colombia , and Ecuador (Gradstein 2021). In the study area is growing on tree trunks and branches of shrubs, between 2600–4000 m (Gradstein 2021), in upper montane rainforest and grass páramos of provinces Magdalena and Cauca of Pacific dominion, and the Páramo province of SATZ ( Fig. 15 ). Notes: —The species can be recognized by its dark brown color, rectangular lobules, underleaves undivided, orbicular to reniform, 4–6 × stem width, and especially by the pluriplicate perianth, with 5–6 strong and 4–5 weak keels. Specimens examined :— COLOMBIA . Boyacá : Chinavita , Páramo de Mamapacha , 3350 m , 22 March 2002 , Zipa 239A, 255A, 240A, 230A ( UPTC ); Ciénega , vereda Albañil , 3130 m , 24 May 2006 , Cabrejo 37 ( UPTC ); Siachoque , vereda San José , 05°27’36”N , 73°10’3.8” W , 3343 m , 12 November 2012 , Gil-Novoa 2367 ( UPTC ); Tibaná , vereda Chiguatá , 5°17’19,03”N , 73°20’41.16”W , 2800 m , 3 August 2012 , Moreno 610 ( UPTC ); Tunja , RFP El Malmo , 3260 m , 4 October 2003 , Álvaro 581 ( UPTC ). Casanare : La Salina , vereda Rodrigoque , 2600 m , 18 August 1982 , Aguirre 3169 ( COL ). Cundinamarca : Bogotá : Ciudad Bolívar , 4°25’19.3”N , 74°10’26.4”W , 3377 m , 5 November 2014 , Guitiérrez 1996A-3 ( JBB ); Chipaque , Alto de Boquerón , 4°27’51”N , 74°04’28.5”W , 3231–3300, 4 November 2016 , Zuluaga 78 ( UDBC ); Guachetá , along road Guasca–Guachetá , 3400 m , Gradstein s.n. ( COL , QCA ); Guasca , 3150 m , 7 August, 1980 , Gradstein 3674 ( COL ); Subachoque , cuchilla “ El Tablazo ”, 3500 m , 20 October 1988 , Schuster 88- 996 ( COL ). Risaralda : Camino real entre Termales de St. Rosa y Hda. La Sierra , 4°49’N , 75°30’W , 3510 m , 24 April 1986 , Wolf 806, 954 ( COL ). ECUADOR . Azuay : Páramo de Patococha , 3300–3500, 3 March 2017 , Gradstein 12671c ( QCA ). VENEZUELA . Táchira : Páramo de Tamá , 3140 m , 1 March 1976 , Schuster 76-1920 ( F ) . Furthermore, recorded in Colombia from Quindío and Santander, and in Ecuador from Carchi, Pichincha and Zamora Chinchipe (Gradstein 2021).