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Morphometric analysis of Schizachyrium condensatum (Poaceae) and related species

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Abstract

Our aim was to assess the degree of morphological differentiation of a group of taxa of Schizachyrium Nees, which presents similar inflorescences and shares habitat and geographic areas: Schizachyrium bimucronatum, S. condensatum, S. lactiflorum, S. microstachyum subsp. microstachyum, S. microstachyum subsp. elongatum, and S. plumigerum. To accomplish this purpose, 22 exomorphological traits were analyzed using multivariate methods. The results obtained support the identity of Schizachyrium condensatum and related species as independent taxa. In addition, the analysis evidences the reliability of several inflorescence characters, which had not been previously considered in the identification of the different taxa. Based upon the information obtained, a new identification key for these taxa was constructed.

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Acknowledgments

We express our gratitude to the curators of the herbaria listed for loans and access to their collections. We thank Dr. María Mercedes Arbo for critical review of the manuscript, Liliana Gomez for the illustration, and two anonymous referees for their valuable comments. This work has been supported by grants of the Universidad Nacional del Nordeste. MCP is Postdoctoral Fellowship of the National Research Council of Argentina (CONICET) and VGSN is a member of the Carrera del Investigador Científico of CONICET.

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Authors and Affiliations

  1. Instituto de Botánica del Nordeste, Corrientes, Argentina

    Myriam Carolina Peichoto & Viviana Griselda Solís Neffa

  2. Facultad Ciencias Agrarias, UNNE, Corrientes, Argentina

    Silvia Matilde Mazza

Authors
  1. Myriam Carolina Peichoto
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  2. Silvia Matilde Mazza
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  3. Viviana Griselda Solís Neffa
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Corresponding author

Correspondence to Myriam Carolina Peichoto.

Appendix

Appendix

Material of Schizachyrium examined. The specimens are listed in alphabetical order of the collectors

Schizachyrium bimucronatum

ARGENTINA. Corrientes: 35 km SW from Santo Tomé, Ahumada 3026 (CTES). 7 km E from Santa Rosa, Arbo and Ferrucci 2172 (CTES). Reserva Natural Prov. Iberá, 27°30′S 56°33′W, Arbo and Tressens 8329 (CTES). 6 km E from Santa Rosa, Arbo et al. 925 (CTES). Route 41, 27°52′22″S 56°29′59″W, Arbo et al. 8646 (CTES). 7 km E from Bella Vista, Battu 9 (CTES). Riachuelo, Caponio and Urbani 73 (CTES). Goya, Carnevali 1414 (CTES). Mburucuyá, Ea. Santa Teresa, Carnevali 5973 (CTES); Carnevali 6154 (CTES). Daciuk 83 (CTES). Mercedes, Fernandez 489 (CTES). San Roque, 28°25′30″S 58°26′17″W, Keller 955 (CTES). 32 km W from Ituzaingó, Krapovickas et al. 25369 (CTES). Santa Rosa, Martinez Crovetto 11284 (CTES). From Laguna Brava to Riachuelo, Martinez Crovetto and Schinini 10212 (CTES). Route 12, access to Ituzaingó, Peichoto 20 (CTES). 19 km S from Bella Vista, Schinini 6532 (CTES). Ea. 3 Marias, 27°50′S 59°W, Schinini 34387 (CTES). Riachuelo, Schinini and Ahumada 12355 (CTES). 21 km S from Loreto, Schinini et al. 8191 (CTES). Route 12, 21 km S from Goya, Schinini et al. 18951 (CTES). 11 km S from Mercedes, Tressens et al. 2415 (CTES). Entre Ríos: Concordia, 31°16′52″S 58°04′12″W, Peichoto 115 (CTES). Santa Ana, 30°52′S 57°50′W, Romanczuk et al. 120 (CTES). Misiones: Route 12, 16.5 km from Candelaria, 27°33′33″S 55°35′55″W, Peichoto 103 (CTES). Near Candelaria, 27°28′S 55°42′47″W, Peichoto 105 (CTES). Ituzaingó, 40 km N from Galarza, Quarín 3356 (CTES). Mercedes, Renvoize et al. 3709 (CTES). San Ignacio, Schinini and Daviña 24726 (CTES). Concepción de la Sierra, Vanni et al. 4573 (CTES). PARAGUAY. Amambay: Entrance to Cerro Corá Park, 22°39′69″S 56°01′48″W, Arbo et al. 8868 (CTES). Route 3, 32 km NE from route 5, Schinini and Dematteis 33858 (CTES). Caaguazú: Yaguarón, Krapovickas et al. 12253 (CTES). 24 km N from Caaguazú, López et al. 223a (CTES). Yaguarón, Pedersen 7559 (CTES). 5 km S from Yhú, 26°06′40″S 55°57′50″W, Schinini et al. 36126 (CTES). Cordillera: Cerro Caacupé, Arenas 1224 (CTES). Slope of S. Miguel hill, Caacupé, Insfran 1090 (CTES). Near from Tobaty, Peichoto et al. 123 (CTES). San Bernardino, Rojas 14272 (CTES). Roquedal del Piraretá, Schinini 16 (SI). Eusebio Ayala, Schinini 2517 (CTES). Road from Caacupé to Tobaty, Schinini 14602 (CTES). Cordillera de Altos, Co. de Caacupé, Schinini 23876 (CTES). Valenzuela, Sparre and Vervoors 1331 (CTES). Paraguari: San Pedro, 23°44′4.3″S 53°17′34.8″W, Gonzalez and Lopez 745 (CTES). Piraretá-Peribebuy, Schinini 1366 (CTES). Cerro Palacios, Zardini et al. 2477 (FCQ).

Schizachyrium condensatum

COLOMBIA. Palmilla in declivitati orientali montis Quindio, André 1939 (K). Antoquia, Mun. Urrao, Pohl and Betancur 15497 (NY). Cauca, Wood 3931 (K). ECUADOR. Quito, Hartweg 1460 (K). Pichincha, Padilla 1095 (MO). PERÚ. Cusco, Machu-Picchu, Ferreyra 2720 (USM). BRASIL. Mato Grosso do Sul, Mun. Terenos, Allem and Vieira 2063 (MO). São Paulo, Estacão Florestal de Paraguaçu Paulista, 22°17′S 50°34′W, Clayton 4628 (MO). Paraná, Pinhaes, Dusén 14507 (SI). Brasilia, Riberão Torto, Irwin et al. 13094a (MO). São Francisco de Paula, Longhi-Wagner 9245 (ICN). São Joaquim, SC 438, km 50 from Lages, Longhi-Wagner and Garcia 7341 (ICN). São Paulo, Itararé IAC, Longhi-Wagner and Zanin 3159 (ICN). Senges, PR 151 km 193 from Jaguariaiva, 24°10′21.1″S 49°35′26.7″W, Longhi-Wagner et al. 8996 (ICN). São Luiz do Puruna towards Ponta Grossa, Longhi-Wagner et al. 9419 (ICN). Cruz Alta, Rosengurtt et al. 9600 (BAA). Ponta Grossa, Swallen 8299 (MO). Bela Vista, Swallen 9472 (MO). Mun. S. Pedro do Sul, Valls et al. 4602 (ICN). Lagoa Vermelha, Zanin 381 (ICN). BOLIVIA. Nor Yungas, from Coroico to Coripata, Beck 17567 (CTES). Franz Tamayo, Apolo 57 km towards Charasani, Beck 18514 (LPB). Yungas, Pentland 186 (P). Santa Cruz, Sara, Buenavista, Steinbach 6953 (W). ARGENTINA. Entre Rios: Federación, Santa Ana, Burkart and Gamerro 21611 (SI). Arroyo Tunas, Burkart and Gamerro 21633 (SI). Concordia, Burkart et al. 23247 (SI). Corrientes: Route 156, 20 km NW from route 129, Carnevali 4766 (CTES). 35 km NW from Paso de los Libres, Carnevali 6176 (CTES). 11 km N from San Carlos, Krapovickas et al. 24960 (CTES). Garruchos, Krapovickas et al. 25098 (CTES). Mburucuyá, Pedersen 5332 (MO). Santo Tomé, Garruchos, Pedersen 9133 (CTES). Concepción, Carambola, Pedersen 14061 (CTES). 10 km NE from Santa Rosa, Peichoto 84 (CTES). Route 38 towards Gdor. Virasoro, 27°48′38″S 56°16′52″W, Peichoto 96 (CTES). San Roque, 1 km E from Paso Naranjito, Peichoto 106 (CTES). Santo Tomé, Garruchos, Quarín 463 (CTES). Formosa: Laishi, 25 km W from San Francisco de Laishi, 26°10′S 58°56′W, Digiacomo 22 (CTES). Formosa, Kermes 572 (BAB). Campos de Col. Uriburu, Parodi 6828 (BAA). Misiones: Posadas, Santa Inés, Parodi 5474 (BAA). Misiones, Parodi 6828 (BAA). 10 km E from San José, Peichoto 54 (CTES). Concepción de la Sierra, 2 km W from Apóstoles, Vanni et al. 4591 (CTES). Route 14, 10 km E from San José, Vanni et al. 4604 (CTES). URUGUAY. Campos del Uruguay, Arechavaleta s.n. (W). Rivera: Cerro Aurora, A. Paraguayo, Rosengurtt 8411 (ICN).

Schizachyrium lactiflorum

BRASIL. Distr. Federal: Parque municipal do Gama, ca. 20 km S from Brasilia, Irwin and Soderstrom 5788 (MO). 2 km S from Sobradinho, Irwin et al. 9051 (MO). Brasilia, Riberão Torto, Irwin et al. 13094b (MO). Goiás: Alto Paraiso-Teresina, 13°54′28.2″S 47°22′56.3″W, Boechat and Filgueiras 83 (ICN). Mato Grosso do Sul: Rod. MS-295, Fazenda Bonanza, 35 km W from Amambai, Hatschbach et al. 58707 (CTES). Minas Gerais: Serra do Espinhaço, ca. 27 km SW from Diamantina, Irwin et al. 21939 (MO). Paraná: 8 km NE from Paraná-Santa Catarina, Davidse et al. 11038 (MO). Ca. 25 km W from Ponta Grossa, Davidse et al. 11363 (MO). 17 km N from Castro along Highway PR-11, Davidse et al. 11391 (MO). Capão da Imbuia-Curitiba, Dombrowski 5836 (MO). Mun. Curitiba, Capão da Imbuia, Dombrowski 5991 (CTES). Rio da Ferra Vermelha, Dusen 7834 (MO). Curitiba, Swallen 8578 (MO). São Paulo: Av. Indianapolis, Hoehne 3018 (ICN). Piraçicaba, Itararé, 24°12′59″S 49°12′56″W, Souza et al. 3586 (ESA). PARAGUAY. Amambay: National Park Cerro Corá, 22°39′30″S 56°00′04″W, Arbo et al. 8856 (CTES). Route 3, towards Bella Vista, Arbo et al. 8881 (CTES). National Park Cerro Corá, 22°38′S 56°04′W, Brunner 1456 (G). National Park Cerro Corá, Fernandez Casas and Molero 4074 (G). Ruta 3, 41 km N from Aquidabán river, Ferrucci et al. 1465 (CTES). Sierra de Amambay, Hassler 10074 (G). National Park Cerro Corá, Mereles 3563 (FCQ). National Park Cerro Corá, 22°40′S 58°5′W, Morrone and Pensiero 460 (FCQ). National Park Cerro Corá, Remonta Cué, 22°40′S 56°5′W, Morrone and Pensiero 547 (FCQ). Near Aquidabán Niqui stream, 22°38′54″S 56°01′12″W, Múlgura de Romero et al. 3690 (CTES). Estancia Johayhú, Peichoto et al. 118 (CTES). National Park Cerro Corá, Soria 5842 (FCQ). National Park Cerro Corá, Soria 7630 (CTES). National Park Cerro Corá, Soria 7928 (CTES). National Park Cerro Corá, Vanni et al. 1335 (CTES). Caaguazú: Yhú stream, López et al. 233 (CTES). Tacurú stream, Mereles 7595 (CTES). 4 km N from Ihú, Schinini 23041 (CTES). Canendiyú: Lagunita, Jimenez and Marin 42 (CTES). Ñandurokai, Jimenez and Marin 1984 (MO). Reserva Natural del Bosque Mbaracayú, Schinini and Dematteis 33249 (CTES). Central: Paraguaria centralis: in regione lacus Ypacaray, Hassler 12448 (G). Concepción: 70 km E from Concepción, Krapovickas et al. 14260 (CTES). Cordillera: km 59 from Tobatí to Caacupé, Peichoto et al. 125 (CTES). San Pedro: Near Aguaray-mi river, López et al. 349 (CTES). Estancia Carumbé, Pedersen 11173 (CTES). ARGENTINA. Corrientes: San Miguel, 28°06′72″S 57°26′18″W, Arbo et al. 8829 (CTES). Route 12, 32 km W from Ituzaingó, Krapovickas et al. 25371 (CTES). Ituzaingó, Martinez Crovetto 11157 (CTES). 19 km W from Ituzaingó, Peichoto 22 (CTES). 10.5 km W from access to Ituzaingó, Peichoto 62 (CTES). San Roque, between Paso Naranjito and Tatacuá, Peichoto 80 (CTES). 12 km N from Loreto, Schinini and Quarín 8555 (CTES).

Schizachyrium microstachyum subsp. elongatum

COLOMBIA. Tolima: Honda, Pennell 3566 (MO). VENEZUELA. Apure: distr. San Fernando, Isla Arapuca, Davidse and González 12170a (MO). Barinas: 16 km SW of the Meride intersection just outside of Barinas, Davidse 3166 (MO). Bolivar: Mun. Raul Leoni, Aza Karon, 6°19′10″N 63°31′35″W, Diaz and Delgado 673 (MO). Miranda: Colonia Tovar, Escalona and Escalona V265 (MO). Cojedes: Hato Paraima, 9°26′N 68°10′W, Ramia and Ortiz 8828 (MO). ECUADOR. Imbabura: km 41 from Lita-Salinas, 00°43′N 78°13′W, Laegaard 71336 (MO). Loja: Near Yangana, Hart 1027 (MO). Pichincha: Calderon, 00°05′S 78°23′W, Laegaard 51714 (MO). PERU. Amazonas: Luya, Diaz et al. 3455 (MO). San Martin: Lamas, Alonso de Alvarado, Schunke 6289 (MO). BRASIL. Bahia: Mun. Prado, 10.5 km NE of turn off road to Prado on road to Cumuruxatiba, 17°08′S 39°25′W, Thomas et al. 10032 (MO). Goiás: Rod. GO-118, 45 km S from São Gabriel de Goiás, Hatschbach et al. 70595 (CTES). Mato Grosso do Sul: Rod. MS-195, 15 km E from Iguatemi, Hatschbach et al. 58634 (CTES). Pará: Braganza Raibroad, Goeldi 25 (MO). São Paulo: Mun. San Carlos, 25°58′S 47°55′W, Eiten et al. 3006 (MO). BOLIVIA. Chuquisaca: Luis Calvo, Saravia Toledo 13528 (CTES). Santa Cruz: Pampa de Viru Viru, 17°39′46″S 63°09′24″W, Menacho et al. 320 (CTES). Vallegrande, Saravia Toledo 12425 (CTES). Tarija: Arce, Rio Negro, Meyer et al. 20723 (CTES). PARAGUAY. Alto Paraná: 2 km N from Hernandarias, 25°17′S 54°35′W, Schinini and Caballero Marmori 27311 (CTES). Amambay: National Park Cerro Corá, Ferrucci et al. 1389 (CTES). Route 3, 33 km N from Aquidabán river, Peichoto et al. 119 (CTES). Near P.J.Caballero, 22°35′12″S 55°44′24″W, Schinini et al. 36027 (CTES). Caaguazú: 24 km N from Caaguazú, López et al. 223 (CTES). Boquerón: 12 km S from Filadelfia, Vanni et al. 2454 (CTES). Misiones: 12 km W from San Ignacio, Arbo et al. 1854 (CTES). ARGENTINA. Catamarca: Alta Gracia, Stuckert 14170b (MO). Corrientes: Route 38, near Gdor. Virasoro, Peichoto 18 (CTES). 23 km E from Ituzaingó, Peichoto 25 (CTES). Road to Colonia Garabí, Tressens and Barrett 5167 (CTES). Entre Rios: Nacional Park El Palmar, Cusato et al. 1169 (CTES). 16 km W from Sta. Ana, 30°48′51″S 57°54′56″W, Peichoto 112 (CTES). Formosa: Laishi, 25 km W from San Francisco de Laishi, 26°10′S °56′W, Digiacomo 23 (CTES). Jujuy: Capital, Sierra de Zapla, Cabrera et al. 23719 (CTES). Mina 9 de Octubre, Sierra de Zapla, Zuloaga and Deginani 180 (CTES). Sierra de Zapla, 24°13′S 65°04′W, Zuloaga et al. 5854 (MO). Misiones: Route 110, 30 km N from Apóstoles, Carnevali 3386 (CTES). 18 km NW from Concepción de la Sierra, Krapovickas et al. 15082 (CTES). Loreto, Martinez Crovetto 11211 (CTES). Concepción de la Sierra, 27°57′29″S 55°40′33″W, Peichoto 97 (CTES). 14 km NW from Alem, 27°32′08″S 55°26′17″W, Peichoto 100 (CTES). Tucumán: Tafi, Crudelli 805 (CTES). Salta: Los Toldos, Meyer et al. 20439 (CTES). Santa Fe: Rosario, Lewis and Collantes 13 (CTES). URUGUAY. Colonia: Ruta 5, N from Manuel Diaz, Rosengurtt 8522 (SI). Rivera: between Rivera and Tacuarembó, Dematteis and Schinini 1492 (CTES). Salto: Belén, 30°50′09″S 57°42′29″W, Peichoto et al. 34 (CTES). Tacuarembó: Tacuarembó, road to Gruta de los Helechos, Dematteis and Schinini 1805 (CTES).

Schizachyrium microstachyum subsp. microstachyum

COLOMBIA. Antioquia: Mun. Andes, 10 km from Andes to Vereda Quebrada Arriba, Fonnegra et al. 2453 (MO). Choco: Rio Tolo, Forero et al. 955 (NY). Narino: Barclay 4686 (MO). Meta: La Macarena Municipio, 2°40′N 74°10′W, Ohba et al. 680 (MO). VENEZUELA. Bolívar: Mun. Sucre, Maripa, Elcoro 547 (MO). Carabobo: Mun. Autonomo Mora, 10°17–28′ N 68°10–16′ W, Diaz 170 (MO). Mérida: NW of Mérida, Bruijn 998 (NY). GUYANA. Cuyuni-Mazaruni, region Waramaden, 5°48′N 60°44′W, McDowell and Goupal 3214 (MO). Pomeroon, Kabakaburi, 7°45′N 58°07′W, Tiwari and Mengharini 331 (MO). ECUADOR. Cotopaxi: Quevedo-Latacunga, Dodson and Embree 13430 (MO). Quevedo-Latacunga 00°52′S 79°09′W, Holm-Nielsen et al. 3161 (NY). Tungurahua: Baños, Fagerlind and Wibon 1050 (NY). PERÚ. San Martin: Distrito San Martin, valley of San Martin, Belshaw 3360 (MO). Cusco: Urubamba, Machu-Picchu, Cabrera and Fabris 13510 (CTES). Junin: San Ramon de Pangoa, 40 km SE of Satipo, Schuh and Schuh 10 (NY). BRASIL. Azambuja-Brusque, Reitz s.n. (SI). Maranhão: Carolina to San Antonio de Balsas, Swallen 4836 (MO). Mato Grosso: Mun. de Caceres, Faz. Descalvados, Allem et al. 2410 (MO). Matto Grosso do Sul: Faz. Nhumirin, Nhecolandia, Grandi 2761 (MO). Minas Gerais: Diamantina, 18°10′16.4″S 43°38′15.7″W, Longhi-Wagner et al. 9185 (ICN). Paraná: Rio de Terra Vermelha, Dusen 7807 (BM). Ponta Grossa, Swallen 8428 (MO). Río Grande do Sul: Pelotas, Costa Sacco 95 (MO). Rio Pardo, Palacios-Cuezzo 955 (CTES). São Paulo: Praia Grande, Sendulsky 1090 (MO). BOLIVIA. La Paz: Sud Yungas, La Paz, Irupana 16°28′S 67°20′W, Beck 22374 (CTES). Velasco, Reserva Forestal Bajo Paragua, 15°14′S 61°30′W, Guillen et al. 1091 (CTES). Santa Cruz: Sandoval, 16°19′39″S 58°26′25″W, Solis Neffa et al. 1590 (CTES). Tarija: Arce, Campamento Rio Negro, Meyer 17460 (CTES). PARAGUAY. Canendiyú: Reserva Natural del Bosque Mbaracayú, 24°9′S 55°15′W, Schinini and Dematteis 33340 (CTES). Concepción: Route 3 and route 5, 22°44′S 56°16′W, Schinini and Dematteis 33426 (CTES). Cordillera: Near Tobaty, Peichoto et al. 124 (CTES). Guairá: Col. Independencia, 25°40′S 56°12′W, Schinini et al. 27980 (CTES). ARGENTINA. Catamarca: Andalgalá, Jorgensen 1781 (SI). Córdoba: Prope Tanti, Villa Garcia, Stuckert 20466 (W). ‘Las Rosas′prope de La Falda, Stuckert 16891 (MO). Corrientes: route 12, 25 km E from Corrientes, Ahumada 1623 (CTES). Route 40, from Garruchos, Cabrera et al. 28450 (SI). 36 km SE from route 12 and 38, Peichoto 26 (CTES). Entre Ríos: Isla Puente, Keller 1550 (CTES). Concordia, 31°17′17″S 58°01′44″W, Peichoto 117 (CTES). Formosa: Pirané, Morel 580 (MO). Jujuy: Laguna de Yala, 24°07′ S 65°27′ W, Zuloaga et al. 6138 (CTES). Misiones: 14 km NW from Alem, 27°32′08″ S 55°26′17″ W, Peichoto 101 (CTES). Concepción de la Sierra, Vanni et al. 4577 (CTES). Salta: Campo Quijano, Meyer 3479 (MO). Santiago del Estero: Bandera, Renolfi 88 (BAB). Belgrano, Unamuno 44 (CTES). Tucumán: Burruyacú, Venturi 2187 (MO). URUGUAY. Maldonado: La Barra, 34°54′24″S 54°49′15″W, Peichoto et al. 43 (CTES). Salto: Belén, 30°50′09″S 57°42′29″W, Peichoto et al. 35 (CTES). Tacuarembó: 10 km NW from Tacuarembó, Dematteis and Schinini 1805 (CTES). Treinta y Tres: Quebrada de los Cuervos, Dematteis and Schinini 1618 (CTES).

Schizachyrium plumigerum

BRASIL. Rio Grande do Sul: Pelotas, Irmão Gilberto 19 (ICN). 37 km from Pelotas, Krapovickas et al. 22890 (CTES). Cidreira, Longhi-Wagner 9096 (ICN). Osorio-Balneario Atlantida, Valls 2656 (ICN). PARAGUAY. Boquerón: 30 km SE from Loma Plata, 22°30′S 60°W, Vanni et al. 2234 (CTES). ARGENTINA. Buenos Aires: Pdo. Cnel. Dorrego, Monte Hermoso, Arroyo 14185 (CTES). Garin, Calderón 15477 (BAA). Sierras de Curramalan (Pigüe), Ducos 3205 (BAA). Pellegrini, León 373 (BAA). Sierra de la Ventana, Proyecto Ventania 1033 (CTES). Córdoba: Castellanos 21 (SI). 5 km E from Villa Huidobro, León 3103 (BAA). Corrientes: Near Santa Rosa, Arbo and Ferrucci 2200 (CTES). Santa Rosa, Martinez Crovetto 11285 (CTES). Riachuelo, Martinez Crovetto and Schinini 10221 (CTES). Mercedes, Millán 392 (SI). Capital, Parodi 12005 (BAA). Mburucuyá, Pedersen 536 (BAA). San Cosme, Santa Ana, Pedersen 6402 (CTES). Mocoretá, 30°21′47″S 57°57′34″W, Peichoto 109 (CTES). 10 km S from Corrientes, Riachuelo, Schinini 10749 (CTES). Paso de los Libres, Schinini et al. 17340 (CTES). Entre Rios: Concordia, Burkart 848 (SI). Dpt. Uruguay, Burkart 24077 (CTES). Santa Ana, Burkart and Gamerro 21615 (SI). Concordia, Clos s.n. (BAA). 14 km from Sta. Ana, 30°51′24″S 57°53′38″W, Peichoto 113 (CTES). Concordia, 31°16′52″S 58°04′12″W, Peichoto 114 (CTES). 11 km NW from Santa Rosa, Tressens et al. 943b (ICN). Formosa: 25 km NW from Lomitas, Fortunato et al. 3421 (BAB). La Pampa: Anguil, Ellenberg 617 (BAA). General Acha, Magariños 15505 (BAA). 20 km from Makachin, Rúgolo 1045 (SI). San Luis: Dpt. General Pedernera, 18 km S from Nva. Escocia, Rosa E. 82 (CTES). Santa Fe: Castellanos, Pensiero and Alonso 1157 (CTES). Sta. Rosa, Romano s.n. (BAA). Santiago del Estero: Alberdi, est. Santo Domingo, Kunst et al. 49 (CTES). URUGUAY. Canelones: Balneario Carrasco, Legrand 55 (BAA). Cerro Largo: Dematteis and Schinini 1576 (CTES). Punta Gorda, Rosengurtt et al. 8647 (BAA). Colonia: Araminda, Rosengurtt 11085 (CTES). Maldonado: Bahia, Rosengurt s.n. (BAA, P). Montevideo: Legrand 46 (BAA). Rivera: Cerro, Felippone 3041 (BAA). Rocha: La Pradera, Rosengurtt 9924 (BAA). San José: Est. Pascual, Herter 535a (SI). Barrancas San Gregorio, Rosengurtt 7710 (BAA). Tacuarembó: Kiyú, 34°41′40″S 56°46′16″W, Peichoto et al. 46 (CTES). Near School, N°87 Capón de la Yerba, 31°36′59″S 56°03′07″W, Peichoto et al. 51 (CTES).

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Peichoto, M.C., Mazza, S.M. & Neffa, V.G.S. Morphometric analysis of Schizachyrium condensatum (Poaceae) and related species. Plant Syst Evol 276, 177–189 (2008). https://doi.org/10.1007/s00606-008-0076-1

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