taxonID	type	description	language	source
0399ED34FF92FFC3FF4F9FE9FBCAFE76.taxon	description	(Figs. 2 A – E, 3 A – H; Table 1).	en	Leofanti, Gabriela Agustina, Echeverría, María Lis, Méndez, Alicia López (2024): A new species of Bromus sect. Ceratochloa (Poaceae: Bromeae) from Argentina. Phytotaxa 669 (1): 47-56, DOI: 10.11646/phytotaxa.669.1.5, URL: https://doi.org/10.11646/phytotaxa.669.1.5
0399ED34FF92FFC3FF4F9FE9FBCAFE76.taxon	materials_examined	Type: — ARGENTINA. Buenos Aires, Partido Mar Chiquita, La Caleta, al borde del camino costero, a ambos lados de un canal, 37 ° 46 ’ 52.3 ” S, 57 ° 27 ’ 12.4 ” W, 4 m a. s. l, 4 November 2019, M. L. Echeverría & G. A. Leofanti 229 (holotype BAL! 317; isotype BA!).	en	Leofanti, Gabriela Agustina, Echeverría, María Lis, Méndez, Alicia López (2024): A new species of Bromus sect. Ceratochloa (Poaceae: Bromeae) from Argentina. Phytotaxa 669 (1): 47-56, DOI: 10.11646/phytotaxa.669.1.5, URL: https://doi.org/10.11646/phytotaxa.669.1.5
0399ED34FF92FFC3FF4F9FE9FBCAFE76.taxon	diagnosis	The new species, B. alonsae, is similar to B. catharticus var. catharticus but differs in growth habit (perennial with creeping or semi-creeping habit vs. annual or briefly perennial with erect or semi-erect habit), blade color (glaucous green vs. light green), blade pubescence (short and dense vs. variable to glabrous), vernation (folded to rolled vs. rolled), and flowering period (mid-October to late January vs. early September to mid-March).	en	Leofanti, Gabriela Agustina, Echeverría, María Lis, Méndez, Alicia López (2024): A new species of Bromus sect. Ceratochloa (Poaceae: Bromeae) from Argentina. Phytotaxa 669 (1): 47-56, DOI: 10.11646/phytotaxa.669.1.5, URL: https://doi.org/10.11646/phytotaxa.669.1.5
0399ED34FF92FFC3FF4F9FE9FBCAFE76.taxon	description	Description: — Plants perennial, cespitose, with high tiller production, with records up to 81 per plant, and variable vernation, folded or rolled, in the same individual. Culms 20.5 – 46.5 cm tall, decumbent; nodes 4 – 8, glabrous to pubescent. Leaf sheaths 5.5 – 12.5 cm long, usually pubescent, sometimes glabrous, closed for most of their length and open at the upper part; auricles absent; ligules 2 – 4 mm long (Fig. 3 B), membranous, apex lacerate; blades 17 – 35 cm long, glaucous-green, linear, flat, with short dense pubescence. Panicles (Fig. 3 E) 15.6 – 25 cm long, loose, elliptic-pyramidal, semi-contracted, with 28 – 105 spikelets; branches close to the main axis; lower branches 7.2 – 10.6 cm long and upper branches 2.4 – 5 cm long; pedicels 0.1 – 2.1 cm long. Spikelets (Fig. 3 F) 1.7 – 3.6 × 0.4 – 1 cm, ovate-lanceolate, laterally compressed, with 6 – 10 florets; glumes glabrous, ovate-lanceolate, usually unequal, the upper one 1 – 3 mm longer than the lower one, persistent, longer than half the length of the lowest lemma, apex acute and keeled; lower glume 0.8 – 1.5 cm long, 5 – 8 nerved; upper glume 0.9 – 1.7 cm long, 7 – 9 nerved; lemma (Fig. 3 G) of the basal floret lanceolate, 1.1 – 2.2 cm long, 7 – 9 nerved, usually glabrous, apex acute and keeled with sub-apical awn, straight, 0.5 – 3 mm long, palea (Fig. 3 H) of the basal floret shorter than the length of the lemma, 0.7 – 1.3 cm long. Stamens 3. Caryopsis linear-lanceolate. Plants hexaploid, 2 n = 6 x = 42.	en	Leofanti, Gabriela Agustina, Echeverría, María Lis, Méndez, Alicia López (2024): A new species of Bromus sect. Ceratochloa (Poaceae: Bromeae) from Argentina. Phytotaxa 669 (1): 47-56, DOI: 10.11646/phytotaxa.669.1.5, URL: https://doi.org/10.11646/phytotaxa.669.1.5
0399ED34FF92FFC3FF4F9FE9FBCAFE76.taxon	biology_ecology	Phenology: — Flowering and fruiting occur from mid-October to the end of January.	en	Leofanti, Gabriela Agustina, Echeverría, María Lis, Méndez, Alicia López (2024): A new species of Bromus sect. Ceratochloa (Poaceae: Bromeae) from Argentina. Phytotaxa 669 (1): 47-56, DOI: 10.11646/phytotaxa.669.1.5, URL: https://doi.org/10.11646/phytotaxa.669.1.5
0399ED34FF92FFC3FF4F9FE9FBCAFE76.taxon	vernacular_names	Vernacular name: — “ cebadilla de los médanos ”, “ sand dune brome ”	en	Leofanti, Gabriela Agustina, Echeverría, María Lis, Méndez, Alicia López (2024): A new species of Bromus sect. Ceratochloa (Poaceae: Bromeae) from Argentina. Phytotaxa 669 (1): 47-56, DOI: 10.11646/phytotaxa.669.1.5, URL: https://doi.org/10.11646/phytotaxa.669.1.5
0399ED34FF92FFC3FF4F9FE9FBCAFE76.taxon	distribution	Ecology and distribution: — Populations of the new species are distributed along 160 km of the coastline between the localities of Mar Chiquita (37 ° 44 ’ 43.2 ” S, 57 ° 25 ’ 10.7 ” W) and Quequén (38 ° 33 ’ 44 ” S, 58 ° 37 ’ 31.2 ” W). The species grows on alkaline soils (pH 8.2 – 8.6) with low organic matter content (0.7 – 2.4 %), and sandy to loamy-sandy texture. It is commonly associated with the exotic species Carpobrotus edulis (Linnaeus 1759: 1060) N. E. Brown (1926: 249) and the native species Poa lanuginosa Poiret (1804: 91), Panicum racemosum (Palisot de Beauvois 1812: 168) Sprengel (1824: 313), Achyrocline saturejoides (Lamarck 1788: 747) Candolle (1838: 220), Calystegia soldanella (Linnaeus 1753: 159) Roemer & Schultes (1819: 184), Margyricarpus pinnatus (Lamarck 1785: 567) Kuntze (1898: 77), and Adesmia incana Vogel (1838: 76). It grows in sympatry with other species of the genus: B. catharticus var. catharticus, B. auleticus, and B. rigidus.	en	Leofanti, Gabriela Agustina, Echeverría, María Lis, Méndez, Alicia López (2024): A new species of Bromus sect. Ceratochloa (Poaceae: Bromeae) from Argentina. Phytotaxa 669 (1): 47-56, DOI: 10.11646/phytotaxa.669.1.5, URL: https://doi.org/10.11646/phytotaxa.669.1.5
0399ED34FF92FFC3FF4F9FE9FBCAFE76.taxon	etymology	Etymology: — Dedicated to Botany Professor Sara Isabel Alonso, who encouraged us to investigate and describe this new species to science.	en	Leofanti, Gabriela Agustina, Echeverría, María Lis, Méndez, Alicia López (2024): A new species of Bromus sect. Ceratochloa (Poaceae: Bromeae) from Argentina. Phytotaxa 669 (1): 47-56, DOI: 10.11646/phytotaxa.669.1.5, URL: https://doi.org/10.11646/phytotaxa.669.1.5
0399ED34FF92FFC3FF4F9FE9FBCAFE76.taxon	materials_examined	Additional material examined: — Argentina. Buenos Aires. Pdo. Gral Pueyrredón, Playa Escondida, 38 ° 13 ’ 32 ” S, 57 ° 43 ’ 27.6 ” W, 15 m a. s. l., 3 November 2019, M. L. Echeverría 201 (BAL 332); Ibidem, Pdo. Gral. Pueyrredón, Playa Chica, 38 ° 1 ’ 22.4 ” S, 57 ° 31 ’ 38.6 ” W, 15 m a. s. l., 7 November 2019, G. A. Leofanti 2 (BAL 358); Ibidem, Pdo. Mar Chiquita, La Caleta, 37 ° 46 ’ 52.3 ” S, 57 ° 27 ’ 12,5 ” W, 3 m a. s. l, 4 November 2019, M. L. Echeverría & G. A. Leofanti 228 (BAL 316); Ibidem, Pdo. Mar Chiquita, Mar Chiquita, 37 ° 44 ’ 45.6 ” S, 57 ° 25 ’ 10.6 ” W, - 3 m a. s. l, 4 November 2019, M. L. Echeverría & G. A. Leofanti 244 (BAL 371); Ibidem, Pdo. Necochea, Costa Bonita, 38 ° 33 ’ 43.9 ” S, 58 ° 37 ’ 31.4 ” W, 11 November 2019, M. L. Echeverría & G. Leofanti 258 (BAL 343); Ibidem, Pdo. Necochea, Quequén, 38 ° 33 ’ 11.7 ” S, 58 ° 40 ’ 23.9 ” W, 11 November 2019, M. L. Echeverría 270 & G. A. Leofanti 244 (BAL 390).	en	Leofanti, Gabriela Agustina, Echeverría, María Lis, Méndez, Alicia López (2024): A new species of Bromus sect. Ceratochloa (Poaceae: Bromeae) from Argentina. Phytotaxa 669 (1): 47-56, DOI: 10.11646/phytotaxa.669.1.5, URL: https://doi.org/10.11646/phytotaxa.669.1.5
