taxonID	type	description	language	source
3E638799FFCFFFB50AB61EC5FE58D759.taxon	description	= Q. tahuasalana Trelease, Mem. Natl. Acad. Sci. 20: 154, pl. 302 b. 1924. Type: — México. Michoacán. El Tahuasal, Langlassé 217 (lectotype (designated by Bartholomew & Almeda 2023: 56): G 00358146!). = Q. acapulcensis Trelease, Mem. Natl. Acad. Sci. 20: 153, pl. 302 a. 1924. Type: — México. Guerrero. Acapulco, E. Palmer 334 (holotype GH 00069901!). Common name: — encino saucillo, encino amarillo. Amended description: — Trees 12 ‒ 25 m tall; stems 0.4 ‒ 0.6 m diam., twigs 1.3 ‒ 2.5 mm diam., terete to slightly furrowed, reddish brown to dark brown, lenticels inconspicuous, glabrous to glabrate with few loosely and heterogeneously distributed stellate trichomes; buds ovoid, ca. 5 mm long, scales glossy, broadly ovate to very broadly ovate, margin moderately ciliate; stipules deciduous. Mature leaves with petioles 2.8 ‒ 7.7 (‒ 9.6) × 1.2 ‒ 2.4 mm, glabrous, petioles reddish, this color extending to the base of the midvein, frequently brown basally or sometimes entirely brown; blades coriaceous, oblanceolate, narrowly elliptical to lanceolate, 10.5 ‒ 20 (‒ 23) × 2.5 ‒ 4 (‒ 5.6) cm, 3.7 ‒ 4.9 times longer than wider; apex acute to acuminate, tip aristate; margin usually entire, cartilaginous, slightly crispate, rarely crenate or with 1 ‒ 2 short aristate teeth towards the apex; base rounded to cuneate, sometimes narrowly oblique; secondary veins 12 ‒ 17 (‒ 22) on each side of the midvein, moderately curved, ascending, branching and anastomosing near the margin, with evanescent intermediates, adaxial blade surface slightly dull, glaucous to grayish green, secondary veins and veinlets yellowish, the midvein slightly reddish-brown basally, slightly raised to smooth; abaxial blade surface slightly shiny, yellowish ‒ green, glabrous or with tufts of fasciculate shortly stipitate to sessile trichomes in the axils of the secondary veins, secondary veins slightly raised and yellowish, epidermis slightly papillose or smooth. Fruits annual, 1 ‒ 2 sessile on the twigs of the current season, cupules obconical, incipiently turbinate, 10.5 ‒ 11.5 mm diam. × 6.3 ‒ 8.1 mm tall, margin erect, scales triangular, canescent and smooth, yellowish-beige; acorns ovoid, yellowishbrown, 8.5 ‒ 9.7 mm diam. × 13.5 ‒ 14.6 mm tall, covered with a fine canescent indumentum, included 1 / 4 ‒ 1 / 3 of their total length in the cupule (Figs. 2 A ‒ 2 E).	en	Valencia-A, Susana, Soto-Arellano, Oscar Javier (2025): Notes on Quercus salicifolia and description of a new species of Quercus section Lobatae (Fagaceae) from Mexico. Phytotaxa 681 (1): 55-69, DOI: 10.11646/phytotaxa.681.1.4, URL: https://doi.org/10.11646/phytotaxa.681.1.4
3E638799FFCFFFB50AB61EC5FE58D759.taxon	distribution	Distribution and ecology: — Mexico (Chiapas, Guerrero, Jalisco, Michoacán, and Oaxaca), probably in Guatemala. On the Pacific slope of the Sierra Madre del Sur. Elevation 115 ‒ 1250 m. Occurs in pine-oak forest, tropical subdeciduous forest and oak forest. Associated with Q. planipocula Trelease (1924: 136), Q. magnoliifolia Née (1801: 268) and Q. peduncularis Née (1801: 270). Flowering in November, fruits mature from June to August. Conservation status: — It was assessed by Carrero et al. (2020) as Vulnerable (VU).	en	Valencia-A, Susana, Soto-Arellano, Oscar Javier (2025): Notes on Quercus salicifolia and description of a new species of Quercus section Lobatae (Fagaceae) from Mexico. Phytotaxa 681 (1): 55-69, DOI: 10.11646/phytotaxa.681.1.4, URL: https://doi.org/10.11646/phytotaxa.681.1.4
3E638799FFCFFFB50AB61EC5FE58D759.taxon	materials_examined	Additional specimens examined: — MEXICO, CHIAPAS. Municipality Villa Corzo: Rancho Lindavista, 15 º 58 ’ 36 ” N, 93 º 18 ’ 00 ” W, 19 May 1998, M. V. Velasquez 314 ‒ 317 (MEXU). GUERRERO. Municipality Acapulco: Parque Nacional El Veladero, 650 m, 23 March 1985, N. Noriega 503, (FCME). Municipality Apango: La Encinera, 535 m, 17 º 36 ’ 34.4 ” N, 101 º 05 ’ 15.5 ” W, 15 November 2013, E. Hernández N- 12 (FCME). Municipality José Azueta: La Mesa de Bravo, brecha carr. Zihuatanejo-Vallecitos de Zaragoza a La Iguana, 28 March 2008, R. Díaz 26 (INEGI); Ejido Barranca de la Bandera, 596 m, 17 º 46 ’ 39 ” N, 101 º 27 ’ 49.3 ” W, M. Hernández 601 (FCME). Municipality Petatlán: Los Llanos, 495 m, 17 º 39 ’ 41.5 ” N, 101 º 17 ’ 12.2 ” W, 29 July 2012, A. Almazán 1980 (FCME); entre Las Mesas de Los Bravo y Rabo de Iguana, 30 November 1973, F. González 6580 (MEXU). Municipality Técpan de Galeana: El Rincón, El Chivo, J. C. Calvillo 12 - 02415 - 01 (FCME); predio El Cuellado. Paraje El Aguacatoso, J. L. Flores JLF 540 (MEXU); El Porvenir, 1000 m, 27 June 2002, R. Mayorga 2008 (FCME); 3 km al NE de El Porvenir, 820 m, 7 February 1986, J. C. Soto 12340 (MEXU). Municipality La Unión: Vallecitos, Montes de Oca, 550 m, 25 November 1936, Hinton et al. 9901 (CHRB, MEXU), 10292 (CHRB). JALISCO. Municipality Casimiro Castillo: Km 9 brecha Tecomates-Cuautitlán, 23 January 1983, L. M. González 1648 (MEXU); brecha Tecomates-Cuautitlán, A. Ramos et al. 4 (MEXU). Municipality Manantlán: ca. 40 km south-east of Autlán, 2 ‒ 3 km above the abandoned site of Durazno, along the lumber road between El Chante and Cuzalapa, 1250 m, 19 º 32 ’ N, 104 º 14 ’ W, 24 March 1965, R. McVaugh 23251 (MEXU); Km 47 Tomatlán-P. Vallarta, 16 December 1970, A. Pérez 451 (MEXU); Las Palmillas, Villa Purificación, 1120 m, 19 º 54 ’ 39.4 ” N, 104 º 35 ’ 39.8 ” W, 3 June 2010, DIAAPROY S. A. de C. V. s. n. (MEXU); Cerro el Remunadero, Villa Purificación, 1280 m, 19 º 51 ’ 10.6 ” N, 104 º 38 ’ 25.8 ” W, 2 June 2010, DIAAPROY S. A. de C. V. s. n. (MEXU); San Miguel de las Ventas, San Sebastian del Oeste, 1112 m, 20 º 45 ’ 17 ” N, 104 º 53 ’ 57.9 ” W, 23 June 2010, DIAAPROY S. A. de C. V. s. n. (MEXU); El Zopilote, Talpa de Allende, 9 June 2010, DIAAPROY S. A. de C. V. s. n. (MEXU); 5 km al N de La Cuesta, camino a Talpa, 18 November 1960, Rzedowski 15076 (MEXU); 39 km al W de San Sebastián, 600 m, 29 December 1981, L. M. González 1273 (MEXU). Municipality San Sebastián: 46 km al NW de Mascota, 1280 m, 28 December 1981, L. M. González 1201 (MEXU). MICHOACÁN. Municipality Arteaga: km 306 along Hwy. Playa Azul-Arteaga (MX- 37); 2 km S of Buenavista II, 615 m, 18 º 12 ’ 16.2 ” N, 102 º 15 ’ 40 ” W, 1 March 2007, R. McCauley 428 (MEXU); About 25 km south of Arteaga, road to Playa Azul, 600 ‒ 650 m, 27 February 1965, R. McVaugh 22642 (MEXU). Municipality Coalcomán: Sierra Naranjillo, B. Hinton 13748 (CHRB). OAXACA. Municipality Santa María Ecatepec: Teipan, 26 July 2002 C. Ruíz s. n. (FCME). Notes: — Quercus mexicana var. glabrata Liebmann ex Seeman (1856: 332) and Q. castanea var. glabrata (Liebmann ex Seeman) A. de Candolle (1864: 72) were proposed by Valencia-A. and Coombes (2020) as synonyms of Q. salicifolia Née. After an examination of the characters that define the latter, and by critically comparing the types and the protologues of both taxa, we can see that the Seemann 1974 collection (on which the names Q. mexicana var. glabrata and Q. castanea var. glabrata were based) are not conspecific with Q. salicifolia, but with Q. confertifolia Bonpland (1809: 53). Therefore, the proposal of Bartholomew & Almeda (2023), that considers Q. mexicana var. glabrata and Q. castanea var. glabrata as synonyms of Q. confertifolia, is supported here.	en	Valencia-A, Susana, Soto-Arellano, Oscar Javier (2025): Notes on Quercus salicifolia and description of a new species of Quercus section Lobatae (Fagaceae) from Mexico. Phytotaxa 681 (1): 55-69, DOI: 10.11646/phytotaxa.681.1.4, URL: https://doi.org/10.11646/phytotaxa.681.1.4
3E638799FFCFFFB50AB61EC5FE58D759.taxon	materials_examined	Type: — PANAMA, Chiriquí, M. E. Davidson 780 (holotype F 935137!, isotypes US 00089445!, GH 00055560!). This differs from Q. salicifolia by a combination of its linear-lanceolate leaves, acute to acute-acuminate at the base and apex, inconspicuous secondary veins, and dark-brown and glabrate twigs. Flora Mesoamericana (Tropicos. org / Project) proposes Q. boquetensis as a synonym of Q. cortesii Liebmann (1854: 175), but this is incorrect given that the type specimens of Q. boquetensis (F 935137, US 00089445, and GH 00055560) show a greater number of characters in common with Q. seemannii, with which it could be conspecific. However, additional studies are required to clarify this identity. Known distribution: — Panamá (Fig. 2 F). Quercus citrifolia Liebmann, Overs. Kongel. Danske Vidensk. Selsk. Forh. Medlemmenrs Arbeider 187. 1854. Type: — COSTA RICA. Cartago, A. S. Oersted 3461 (lectotype (designated by Bartholomew & Almeda 2023: 55) C 10012469!) (Fig. 2 H). = Q. borucasana Trelease, Mem. Natl. Acad. Sci. 20: 161. Pl. 315 a. 1924. Type: — COSTA RICA, Cartago, A. S. Oersted 3491 (holotype: C 10014102!). = Q. granulata Liebmann, non Rafinesque (1838: 21). Overs. Kongel. Danske Vidensk. Selsk. Forh. Medlemmenrs Arbeider 186: 1854 (Fig. 2 G).	en	Valencia-A, Susana, Soto-Arellano, Oscar Javier (2025): Notes on Quercus salicifolia and description of a new species of Quercus section Lobatae (Fagaceae) from Mexico. Phytotaxa 681 (1): 55-69, DOI: 10.11646/phytotaxa.681.1.4, URL: https://doi.org/10.11646/phytotaxa.681.1.4
3E638799FFCFFFB50AB61EC5FE58D759.taxon	description	Bartholomew & Almeda (2023) point out that the image of Trelease corresponds to Q. salicifolia. While Q. eugeniifolia is similar to Q. salicifolia in having elliptical leaves with a cuneate to acute base and an acute to acuminate apex, it differs in the revolute margin, the secondary veins diverging almost at a right angle to the midvein and being impressed on the adaxial surface, and the twigs having conspicuous lenticels. Although Burger (1977) proposed it as a synonym of Q. seemannii, we consider that there is still a lack of information in this regard, so in the meantime, we maintain both as different species. Known distribution: — Costa Rica. Quercus mulleri Martínez, Anales Inst. Biol. Univ. Nac. Autón. Méixco 24 (2): 51, fig. 1, 2. 1953. Type: — MEXICO. Oaxaca. Inter San Pedro Sosoltepec et Tacubaya, Distrito de Yautepec, T. MacDougall 2435 (holotype MEXU 00011238!) (Fig. 2 J). This species differs from Q. salicifolia in its narrowly lanceolate, long acuminate, and coriaceous leaves, which additionally have an olive-green colour, a slightly revolute margin, secondary veins diverging at an almost right angle from the midvein and they are concolorous, with a rounded base. So, we recognize this as a different taxon and its synonymy is not accepted here. Known distribution: — microendemic of Mexico, in Oaxaca and possibly Chiapas.	en	Valencia-A, Susana, Soto-Arellano, Oscar Javier (2025): Notes on Quercus salicifolia and description of a new species of Quercus section Lobatae (Fagaceae) from Mexico. Phytotaxa 681 (1): 55-69, DOI: 10.11646/phytotaxa.681.1.4, URL: https://doi.org/10.11646/phytotaxa.681.1.4
3E638799FFCFFFB50AB61EC5FE58D759.taxon	materials_examined	Type: — MEXICO. Guerrero. R. De Santiago 747 (holotype FCME!) (Fig. 2 K). The greater number of veins and longer leaves, as well as other characters shown in Table 1, distinguish Q. nixoniana from Q. salicifolia. Known distribution: — Mexico, in Guerrero, Jalisco, and Oaxaca.	en	Valencia-A, Susana, Soto-Arellano, Oscar Javier (2025): Notes on Quercus salicifolia and description of a new species of Quercus section Lobatae (Fagaceae) from Mexico. Phytotaxa 681 (1): 55-69, DOI: 10.11646/phytotaxa.681.1.4, URL: https://doi.org/10.11646/phytotaxa.681.1.4
3E638799FFCFFFB50AB61EC5FE58D759.taxon	materials_examined	Type: — MEXICO. Guerrero. Sierra Madre del Sur, Höhen im NE von Malinaltepec, March 1930, L. Schultze 343 (holotype B, destroyed). The description states that the twigs are grayish, with ellipsoid lenticels, and ellipsoid buds, as well as deciduous, lanceolate, and acute (at both ends) leaves. It was collected at 2000 m of elevation. With the exception of the bases that could be cuneate in Q. salicifolia, the rest of the characteristics indicated above do not coincide with the characteristics of Q. salicifolia, since it has reddish to brown twigs, and inconspicuous lenticels. Additionally, the elevation and location of collection of Q. obtusanthera are different from those of Q. salicifolia, which does not exceed 1300 m asl, and is found mainly on the Pacific slope of the Sierra Madre del Sur, so this synonymy is not accepted here for Q. salicifolia. Known distribution: — data deficient, only known from the protologue.	en	Valencia-A, Susana, Soto-Arellano, Oscar Javier (2025): Notes on Quercus salicifolia and description of a new species of Quercus section Lobatae (Fagaceae) from Mexico. Phytotaxa 681 (1): 55-69, DOI: 10.11646/phytotaxa.681.1.4, URL: https://doi.org/10.11646/phytotaxa.681.1.4
3E638799FFCFFFB50AB61EC5FE58D759.taxon	materials_examined	Type: — MEXICO. Guerrero. Sierra Madre del Sur, Gipfel des Berges Lucerna im NE von Malinaltpec, L. Schultze 371 y 372 (syntypes B, destroyed, neotype (designated here): MEXICO. Guerrero, Municipality Malinaltepec, Al NE de Malinaltepec, cerro de La Lucerna, S. Valencia 487 (FCME 07399!) (Figs. 3 and 2 L). Its broader leaves with finely crisped margin, a greater number of secondary veins that are regularly distributed and almost equidistant from each other, petioles up to 5 cm long and subtly winged, catkins reddish (from which the specific epithet is derived), as well as its larger and biennial fruit readily distinguish Q. rubramenta from Q. salicifolia. Its habitat includes cloud forest, humid oak forest, and humid oak-pine forest, and it reaches 2950 m asl. Known distribution: — Microendemic of Mexico, in Guerrero and Oaxaca.	en	Valencia-A, Susana, Soto-Arellano, Oscar Javier (2025): Notes on Quercus salicifolia and description of a new species of Quercus section Lobatae (Fagaceae) from Mexico. Phytotaxa 681 (1): 55-69, DOI: 10.11646/phytotaxa.681.1.4, URL: https://doi.org/10.11646/phytotaxa.681.1.4
3E638799FFCFFFB50AB61EC5FE58D759.taxon	description	Known distribution: — Costa Rica, Mexico (Chiapas), and Panama. It is possible that it may also be present in Honduras and Nicaragua.	en	Valencia-A, Susana, Soto-Arellano, Oscar Javier (2025): Notes on Quercus salicifolia and description of a new species of Quercus section Lobatae (Fagaceae) from Mexico. Phytotaxa 681 (1): 55-69, DOI: 10.11646/phytotaxa.681.1.4, URL: https://doi.org/10.11646/phytotaxa.681.1.4
3E638799FFC5FFB90AB61EC5FC63D095.taxon	materials_examined	Type: — MEXICO. Guerrero. Municipality Atoyac de Álvarez: 1 km antes de las Delicias, 9 August 1985, J. Ramírez Santos 71 (holotype FCME- 182699!, isotype FCME- 11370!) (Fig. 4).	en	Valencia-A, Susana, Soto-Arellano, Oscar Javier (2025): Notes on Quercus salicifolia and description of a new species of Quercus section Lobatae (Fagaceae) from Mexico. Phytotaxa 681 (1): 55-69, DOI: 10.11646/phytotaxa.681.1.4, URL: https://doi.org/10.11646/phytotaxa.681.1.4
3E638799FFC5FFB90AB61EC5FC63D095.taxon	diagnosis	Diagnosis: — Quercus salasiae is similar to Q. salicifolia and Q. nixoniana. From Q. salicifolia it is mainly distinguished by its shorter petioles (1.7 ‒ 3.5 (‒ 7) vs. 2.8 ‒ 7.7 (‒ 9.6), shorter length / width ratio (2.6 ‒ 3.2 (‒ 3.8) vs. 3.7 ‒ 4.9), and the adaxial blade surface somewhat shining vs. dull. From Q. nixoniana it can be distinguished by its oblanceolate, obovate, elliptic to pandurate leaves vs. narrowly elliptic to lanceolate, as well as the number of secondary veins on each side of the midvein (13 ‒ 16 (18) vs. 15 ‒ 23), and its way of these respect to midvein (moderately curved and ascending vs. almost straight and almost perpendicular).	en	Valencia-A, Susana, Soto-Arellano, Oscar Javier (2025): Notes on Quercus salicifolia and description of a new species of Quercus section Lobatae (Fagaceae) from Mexico. Phytotaxa 681 (1): 55-69, DOI: 10.11646/phytotaxa.681.1.4, URL: https://doi.org/10.11646/phytotaxa.681.1.4
3E638799FFC5FFB90AB61EC5FC63D095.taxon	description	Description: — Trees 15 ‒ 25 (30) m tall; stems ca. 0.4 m diam., twigs 1 ‒ 3 mm diam., slightly furrowed, greyish to reddish brown, lenticels inconspicuous, glabrous; buds ovoid, 5 - 6 mm long, scales glossy, broadly ovate to very broadly ovate, margin moderately ciliate; stipules deciduous. Mature leaves with petioles 1.7 ‒ 3.5 (‒ 7) × 2 ‒ 3.1 mm, glabrous, thick at the base, often depressed between the leaf base, reddish-brown basally; blades evergreen, coriaceous, oblanceolate, obovate or elliptical to pandurate 10.5 ‒ 17 (‒ 28) × 2.8 - 5 (‒ 9) cm, 2.6 ‒ 3.2 (‒ 3.8) times longer than wider; apex acute-acuminate, tip aristate; margin entire, cartilaginous, somewhat crisped and slightly revolute; base cuneate, narrowly rounded or narrowly subcordate; secondary veins 13 ‒ 16 (‒ 18) on each side of the midvein, moderately curved, ascending, regularly distributed (more or less regularly equidistant from each other), branching and anastomosing near the margin, with evanescent intermediates, adaxial blade surface somewhat glossy, slightly reddish-green to glaucous, midvein smooth or raised, secondary veins and veinlets concolorous or somewhat yellowish; abaxial blade surface somewhat dull, glabrous or with tufts of fasciculate shortly stipitate to sessile trichomes in the axils of the secondary veins, secondary veins slightly raised, epidermis smooth. Pistillate flowers 1 ‒ 2 at the apex of a glabrous peduncle 0.4 ‒ 1.4 cm long, stigmas 3, tomentose on the outside and rolled, forming a spiral. Fruits annual, 1 ‒ 2 at the end of a peduncle ca. 1 cm long or rarely sessile on the twigs, cupules hemispheric, rarely incipiently turbinate, 7 ‒ 10 mm tall × 10 ‒ 14.5 mm diam., margin erect, scales triangular, canescent and smooth; acorns ovoid to subspheric, 15 ‒ 30 mm tall × 10 ‒ 26 mm diam., brown, covered with a fine canescent indumentum at the apex, including 1 / 4 ‒ 1 / 3 of their total length in the cupule.	en	Valencia-A, Susana, Soto-Arellano, Oscar Javier (2025): Notes on Quercus salicifolia and description of a new species of Quercus section Lobatae (Fagaceae) from Mexico. Phytotaxa 681 (1): 55-69, DOI: 10.11646/phytotaxa.681.1.4, URL: https://doi.org/10.11646/phytotaxa.681.1.4
3E638799FFC5FFB90AB61EC5FC63D095.taxon	distribution	Distribution and ecology: — Mexico (Chiapas, Guerrero, and Oaxaca) (Fig. 5), possibly in Guatemala. Elevation (540 ‒) 700 ‒ 1820 m. It occurs in pine-oak forest, oak forest and riparian forest. Associated with Quercus glaucescens Bonpland (1809: 29), Pinus maximinoi, H. E. Moore (1966: 8), some species of Magnolia Linnaeus (1753: 535), and species of the family Malvaceae Jussieu (1789: 271). Phenology: — Flowering time is January, and fruits mature from May to September. Conservation status: — According to the IUCN (2024) categories and criteria and the calculated value of the extent of occurrence (EOO = 91,804.781 km 2), Quercus salasiae may be considered as Least Concern (LC). However, based on the area of occupancy (AOO = 172 km 2), it may be assessed as Endangered (EN) because its area of occupancy is less than 5000 km 2. Taking into account this information, in addition to the locations of the collections that allow us to infer that the species is widely distributed throughout the Sierra Madre del Sur and the Sierra Madre de Chiapas, Mexico, and that it occurs in different environments, we propose the preliminary category of LC for Q. salasiae.	en	Valencia-A, Susana, Soto-Arellano, Oscar Javier (2025): Notes on Quercus salicifolia and description of a new species of Quercus section Lobatae (Fagaceae) from Mexico. Phytotaxa 681 (1): 55-69, DOI: 10.11646/phytotaxa.681.1.4, URL: https://doi.org/10.11646/phytotaxa.681.1.4
3E638799FFC5FFB90AB61EC5FC63D095.taxon	etymology	Etymology: — The specific epithet honors Dra. Silvia Hortencia Salas, who has dedicated a large part of her studies to botanical exploration in the state of Oaxaca, and who collected part of the botanical material of this species. Common name: — Encino de castaña, Toki, encino blanco.	en	Valencia-A, Susana, Soto-Arellano, Oscar Javier (2025): Notes on Quercus salicifolia and description of a new species of Quercus section Lobatae (Fagaceae) from Mexico. Phytotaxa 681 (1): 55-69, DOI: 10.11646/phytotaxa.681.1.4, URL: https://doi.org/10.11646/phytotaxa.681.1.4
3E638799FFC5FFB90AB61EC5FC63D095.taxon	materials_examined	Additional specimens examined: — MÉXICO, CHIAPAS. Municipality Angel Albino Corzo: Paraje San Luis, Ejido Nueva Independencia, 1820 m, 5 March 1989, U. Bachem et al. 418 (MEXU); Ejido Angel Albino Corzo, U. Bachem & R. Rojas 689 (MEXU). Municipality Cintalapa: 15 km al N de Cintalapa, sobre el camino hacia Francisco I. Madero, 820 m, A. Reyez-García et al. 1472 a (MEXU). Municipality La Concordia: Paraje La Naranja, Predio particular El Horizonte, 740 m, 16 May 1989, U. Bachem & R. Rojas 934 (MEXU). Municipality Villacorzo: Paraje “ El Alto ”, ejido Plan de Ayala, 1020 m, 27 July 1998, R. Ramírez & J. L. Campos 20 (MEXU). GUERRERO. Municipality Acatepec: Comunidad de El Fuereño, 1180 m, 27 October 2012, Borda-Niño 28, 27 (MEXU). Municipality Atoyac de Álvarez: 2 km adelante de la desviación a El Edén sobre la carr. Atoyac a Puerto del Gallo, 1000 m, 3 May 1985, V. C. Aguilar 637 (MEXU); 1 km al norte del Río Santiago, 920 m, C. Arrendondo 49 (FCME); 2 km adelante de San Francisco del Tibor, rumbo a la Remonta, 810 m, 7 May 1984, R. M. Fonseca 574 (FCME); 4 km adelante de El Paraíso, rumbo a Atoyac, por el camino a Río Verde, 1000 m., 26 July 1984, R. M. Fonseca 697 (FCME); between Río Verde and El Paraiso, a short dirt road (ca. 5 km) off the road between El Paraiso and Atoyac, 1040 m, 23 May 1987, J. S. Miller & G. Campos 2953 (MEXU); Ejido El Porvenir, 810 m, 23 March 1986, G. Matus 19 (INEGI); alrededores del FIGIURE 4. Quercus salasiae. A. Holotype.	en	Valencia-A, Susana, Soto-Arellano, Oscar Javier (2025): Notes on Quercus salicifolia and description of a new species of Quercus section Lobatae (Fagaceae) from Mexico. Phytotaxa 681 (1): 55-69, DOI: 10.11646/phytotaxa.681.1.4, URL: https://doi.org/10.11646/phytotaxa.681.1.4
3E638799FFC5FFB90AB61EC5FC63D095.taxon	description	FIGIURE 4. B. Close-up of the holotype. Photo by Gabriela Flores Valencia. poblado “ El Porvenir ”, 1330 m, 9 July 1985, A. Nuñez 1201 (MEXU); 2 km sobre la desviación a El Porvenir, carretera Atoyac-Puerto del Gallo, 900 m, J. Ramírez 45 (FCME); Puerto del Gallo, 9 July 1985, J. Ramírez s. n. (FCME); 15 km al NE de El Paraiso, 1100 m, 19 August 1985, J. C. Soto & S. Román 10110 (MEXU); 10 km al NE de El Paraiso, hacia Puerto del Gallo, 950 m, S. Valencia 466 (FCME). Municipality Ayutla de los Libres: Tepetates, 900 m, 16 May 2006, J. Vázquez 38 (FCME). Municipality Chilpancingo de los Bravo: Los Cajones, 15 January 1989, L. Rodríguez 238 (FCME). Municipality Coyuca de Benítez: Ejido Las Compuertas, 1104 m, B. E. Carreto 1357 (FCME); Hierba Santa, La Agüita, 895 m., 17 December 2013, E. González 12 - 02527 - 01 (FCME). Municipality General Heliodoro Castillo: El Ranchito, camino Atoyac de Alvarez a Filo de Caballo, 115 m, 17 º 23 ’ 39 ” N, 100 º 11 ’ 49 ” W, 11 July 2006, J. L. Contreras 8409 (FCME, HUAP). Municipality Mártir de Cuilapan: San Marcos, Oacotzingo, Cerro de La Cruz, 690 m, 17 º 54 ’ 39.7 ” N, 99 º 28 ’ 07.2 ” W, 21 October 2003, E. León et al. 555 (FCME). Municipality Petatlán: El Rincón, 1100 m, 17 ° 39 ’ 12 ” N, 100 ° 55 ’ 17 ” W, 22 January 2010, DIAAPROY S. A. DE C. V. s. n. (MEXU); El Jilguero, 2.2 km al OSO, faldas del Cerro El Jilguero, 1253 m, 17 º 35 ’ 49 ” N, 101 º 03 ’ 26.8 ” W, 4 May 2008, F. Madariaga 881 (FCME). Municipality San Luis Acatlán: 20 km al N de Mishuiclan, 29 May 1983, J. González & J. Castañeda s. n. (MEXU). Municipality: Técpan de Galeana: Bajos de Balzamar, 1060 m, 17 ° 36 ’ 22.2 ” N, 100 º 47 ’ 17.12 ” W, 27 July 2006, M. Hernández 133 (FCME), 29 September 2006, M. Hernández 208 (FCME), 29 September 2006, M. Hernández 278 (FCME); Km 35, antes de llegar a la Loc. La Piedra, A. Hernández 701 (HUAP); El Plato, 800 m., Hinton et al. 14363 (CHRB, MEXU); Bajos de Balsamar, 1000 m, 27 June 2002, R. Mayorga 2059 (FCME); La Guayabera, 26 km al NE de Coyuquilla, J. C. Soto et al. 12228 (MEXU), 12235 (MEXU). Municipality Tlacoachistlahuaca: Tierra Colorada, 16 º 57 ’ 22 ” N, 98 º 16 ’ 39 ” W, 8 October 2013, G. Castro 320473 - 03 (FCME). OAXACA. Municipality San Ildefonso Villa Alta: Santa María Temaxcalapa, 1400 m, J. Ruiz 43 (INEGI). Municipality San Juan Cotzocón: Divina Flores (Buenos Aires), 500 m, 14 april 2007, J. Zuñiga R. 73352 a (INEGI). Municipality San Juan Mazatlán: Lomas de Santa Cruz, 600 m, 11 april 2007, J. L. López 73570 (INEGI). Municipality Santa María Ipalapa: El Limón (El Drago), R. Castro 75702 (INEGI). Municipality San Miguel del Puerto. Distrito de Pochutla, Finca Montecarlo, 950 m, 15 º 52 ’ 24 ” N, 96 º 0 ’ 20 ” N, 30 April 2001, A. Saynes 2067 et al. (FCME, MEXU); F. López 95 (MEXU); 600 m LR al NE del rancho San Agustín. Rumbo a el Encinal, 880 m, 15 º 59 ’ 44.4 ” N, 96 º 6 ’ 6.7 ” N, 4 June 2002, A. Saynes 2957 (FCME); 400 m al N de la Finca Montecarlo, al lado de la brecha a Las Lobas, 990 m, 15 º 59 ’ 49.2 ” N, 96 º 6 ’ 37.5 ” N, 17 May 2003, S. H. Salas et al. 4986 (FCME, MEXU), 17 May 2003, S. H. Salas 4987 (FCME, MEXU). Municipality Santiago Lachiguiri: Santa Isabel de la Reforma (El Pico), 930 m, 12 April 2007, A. Alonso 73775 (INEGI). Municipality Santiago Tetepec: Ocotlán de Juárez, J. Ruiz 7 (INEGI). Municipality Santiago Yaveo: Cerro Monte Negro, 540 m, 6 June 2007, J. C. Calvillo 72290 (INEGI). Casa de Piedra, J. C. Calvillo 72504 a (INEGI). Municipality Zimatlán de Álvarez: Rumbo a Tlacuache, 19 March 1997, M. Velasquez 12 (INEGI). Notes: — Quercus salasiae can be confused with Q. salicifolia and Q. nixoniana with which it can share habitat on the Pacific slope of the Sierra Madre del Sur. Table 1 shows the main characteristics that allow these species to be distinguished. In most fertile specimens the fruit cup has a hemispherical shape, however, in the specimen from the state of Guerrero, collected by Soto & Román 10110, the fruit cup is turbinate.	en	Valencia-A, Susana, Soto-Arellano, Oscar Javier (2025): Notes on Quercus salicifolia and description of a new species of Quercus section Lobatae (Fagaceae) from Mexico. Phytotaxa 681 (1): 55-69, DOI: 10.11646/phytotaxa.681.1.4, URL: https://doi.org/10.11646/phytotaxa.681.1.4
