taxonID	type	description	language	source
03A087DA864B8659DC83F807FD22FD7A.taxon	materials_examined	TYPE: — BRAZIL Bahia: Camacã, Serra Bonita, 15 º 23 ’ 24 ” S, 39 º 33 ’ 56 ” W, ca. 850 m elev., 02 October 2023, F. C. S. Vieira 3599 (holotype USP!, isotype JOI!).	en	Vieira, Fábio Christiano Speck, Fonseca, Heitor Lisboa Da, Meireles, Leonardo Dias, Zavatin, Danilo Alvarenga, Sano, Paulo Takeo, Lucas, Eve (2025): Amidst the cloud forests of the mountains, three new species of Brazilian Myrceugenia (Myrtaceae) are described. Phytotaxa 691 (2): 201-210, DOI: 10.11646/phytotaxa.691.2.6, URL: https://doi.org/10.11646/phytotaxa.691.2.6
03A087DA864B8659DC83F807FD22FD7A.taxon	description	Figures 1, 3.	en	Vieira, Fábio Christiano Speck, Fonseca, Heitor Lisboa Da, Meireles, Leonardo Dias, Zavatin, Danilo Alvarenga, Sano, Paulo Takeo, Lucas, Eve (2025): Amidst the cloud forests of the mountains, three new species of Brazilian Myrceugenia (Myrtaceae) are described. Phytotaxa 691 (2): 201-210, DOI: 10.11646/phytotaxa.691.2.6, URL: https://doi.org/10.11646/phytotaxa.691.2.6
03A087DA864B8659DC83F807FD22FD7A.taxon	diagnosis	Diagnosis: — This species is morphologically similar to Myrceugenia miersiana (Gardner) D. Legrand & Kausel (in Legrand 1953: 8; basionym: Eugenia miersiana Gardner, 1845: 103), however, the leaves are notably larger and wider, measuring 80 – 150 × 34 – 85 mm, the petiole is also larger, reaching dimensions of 14 – 26 × 2 – 3 mm and is flat on the upper surface with a very fine groove and two wings, and the sepals are internally glabrous. In contrast, in M. miersiana, the leaves only reach a maximum size of 100 × 30 mm, the petioles measure 2 – 7 × 1 – 1.5 mm and are plump or slightly furrowed, and the sepals are densely pubescent adaxially.	en	Vieira, Fábio Christiano Speck, Fonseca, Heitor Lisboa Da, Meireles, Leonardo Dias, Zavatin, Danilo Alvarenga, Sano, Paulo Takeo, Lucas, Eve (2025): Amidst the cloud forests of the mountains, three new species of Brazilian Myrceugenia (Myrtaceae) are described. Phytotaxa 691 (2): 201-210, DOI: 10.11646/phytotaxa.691.2.6, URL: https://doi.org/10.11646/phytotaxa.691.2.6
03A087DA864B8659DC83F807FD22FD7A.taxon	description	Description: — Tree to 6 – 8 m tall; bark whitish with sheets of papyraceous consistency, light beige on young branches, these covered with simple reddish trichomes; young branches slightly flattened, furrowed; simple, erect trichomes forming a tomentose coating on the pedicels, bracteoles, floral buds, the abaxial side of the leaves and on young branches, which are shed with the growth of the branches. Leaves with the petiole flat on the upper surface, with a very fine groove and two lateral wings, 14 – 26 × 2 – 3 mm; lamina chartaceous, ovate – elliptical, 80 – 150 × 34 – 85 mm, about 2.5 times as long as wide, beige and reddish to greenish brown on the abaxial surface and olive green to dark brown on the adaxial surface, with translucent glands visible under a magnifying glass, one per reticulum; base attenuate; apex cuneate, with mucron 1 – 2 × 1 – 1.2 mm; margin gently revolute, primary vein prominent on the abaxial surface, grooved on the adaxial; secondary veins 9 – 12 pairs, leaving the midvein at an angle of approximately 70 º, slightly grooved on the adaxial side; marginal veins two, the innermost forming arches, about 2 – 6 mm from the edge, and the outermost one follows the edge of the leaf. Peduncles uniflorous, in rows, positioned vertically within a file, between the shoot and the petiole, 2 – 4 per leaf axil, covered with simple and dibrachiate trichomes, beige to brown, 18 – 10 × 1 – 2 mm; bracts absent; bracteoles oblong, 3.4 – 4 × 1 – 1.2 mm, internally flat, without the presence of a protruding vein, completely free at the base, inserted into the peduncle, not reaching the median portion of the flower bud, covering only the ovary; floral buds globose with petals hidden; sepals triangular, 5.6 × 4.5 mm, internally glabrous; petals white orbicular, 4.5 – 5.5 × 5.5 – 6.5 mm, densely covered with trichomes externally, sparsely internally; stamens ca. 230, semi-curved in the bud, 2.5 × 0.1 mm; style 5.2 × 0.3 mm, covered with sparse simple hyaline trichomes, stigma punctate; ovary trilocular, 7 – 9 ovules per locule, 23 – 25 ovules in total; fruits not seen.	en	Vieira, Fábio Christiano Speck, Fonseca, Heitor Lisboa Da, Meireles, Leonardo Dias, Zavatin, Danilo Alvarenga, Sano, Paulo Takeo, Lucas, Eve (2025): Amidst the cloud forests of the mountains, three new species of Brazilian Myrceugenia (Myrtaceae) are described. Phytotaxa 691 (2): 201-210, DOI: 10.11646/phytotaxa.691.2.6, URL: https://doi.org/10.11646/phytotaxa.691.2.6
03A087DA864B8659DC83F807FD22FD7A.taxon	distribution	Distribution, habitat and phenology: — The species is endemic to the state of Bahia and is restricted to two mountainous regions: Serra Bonita in the municipality of Camacã, and Serra do Teimoso in Jussari, at elevations of around 800 – 1000 m in montane rainforest. Specimens were collected with flowers from March to October.	en	Vieira, Fábio Christiano Speck, Fonseca, Heitor Lisboa Da, Meireles, Leonardo Dias, Zavatin, Danilo Alvarenga, Sano, Paulo Takeo, Lucas, Eve (2025): Amidst the cloud forests of the mountains, three new species of Brazilian Myrceugenia (Myrtaceae) are described. Phytotaxa 691 (2): 201-210, DOI: 10.11646/phytotaxa.691.2.6, URL: https://doi.org/10.11646/phytotaxa.691.2.6
03A087DA864B8659DC83F807FD22FD7A.taxon	conservation	Conservation status: — By employing the geographic coordinates of the collections and the use of GEOCAT, the species demonstrates a very limited extent of occurrence (EOO = 272 km ²), and area of occupancy (AOO = 12 km ²), and an observed population size estimated to be fewer than 50 mature individuals. These findings suggest that Myrceugenia bonita meets the criteria for classification as EN (endangered).	en	Vieira, Fábio Christiano Speck, Fonseca, Heitor Lisboa Da, Meireles, Leonardo Dias, Zavatin, Danilo Alvarenga, Sano, Paulo Takeo, Lucas, Eve (2025): Amidst the cloud forests of the mountains, three new species of Brazilian Myrceugenia (Myrtaceae) are described. Phytotaxa 691 (2): 201-210, DOI: 10.11646/phytotaxa.691.2.6, URL: https://doi.org/10.11646/phytotaxa.691.2.6
03A087DA864B8659DC83F807FD22FD7A.taxon	description	Affinities: — This species resembles the widespread southeastern and southern Brazilian Myrceugenia miersiana (for description see Legrand & Klein 1970: 395 and Landrum 1981 b: 99); with which it is compared in the diagnosis.	en	Vieira, Fábio Christiano Speck, Fonseca, Heitor Lisboa Da, Meireles, Leonardo Dias, Zavatin, Danilo Alvarenga, Sano, Paulo Takeo, Lucas, Eve (2025): Amidst the cloud forests of the mountains, three new species of Brazilian Myrceugenia (Myrtaceae) are described. Phytotaxa 691 (2): 201-210, DOI: 10.11646/phytotaxa.691.2.6, URL: https://doi.org/10.11646/phytotaxa.691.2.6
03A087DA864B8659DC83F807FD22FD7A.taxon	etymology	Etymology: — The species is named in honor of its specific collection location, Serra Bonita in the municipality of Camacã, situated in the state of Bahia, Brazil.	en	Vieira, Fábio Christiano Speck, Fonseca, Heitor Lisboa Da, Meireles, Leonardo Dias, Zavatin, Danilo Alvarenga, Sano, Paulo Takeo, Lucas, Eve (2025): Amidst the cloud forests of the mountains, three new species of Brazilian Myrceugenia (Myrtaceae) are described. Phytotaxa 691 (2): 201-210, DOI: 10.11646/phytotaxa.691.2.6, URL: https://doi.org/10.11646/phytotaxa.691.2.6
03A087DA864B8659DC83F807FD22FD7A.taxon	materials_examined	Paratypes: — BRAZIL. Bahia: Arataca, RPPN Caminho das Pedras, em trilha de acesso ao Peito-de-Moça., 15 º 10 ’ 25 ” S, 39 º 20 ’ 30 ” W, ca. 1000 m elev., 05 August 2006, M. M. M. Lopes, P. Labiak, J. Paixao, L. Gomes 13331 (ASU *, NYBG *, CEPLAC!). Camacã, 9, 7 km W de Camacã na estrada para Jacarecí, daí 6 km SW na estrada para a RPPN e Torre da Embratel. Trilha do mirante, até a Torre, 06 June 2006, M. M. M. Lopes 813 (NYBG *, RBR *, UB!). Jussari, Fazenda Serra do Teimoso. Reserva Serra do Teimoso. Perto do topo da montanha, em área perto do Ribeirão da Bica, 15 March 2003, W. W. Thomas 13331 (UB!, CEPLAC!).	en	Vieira, Fábio Christiano Speck, Fonseca, Heitor Lisboa Da, Meireles, Leonardo Dias, Zavatin, Danilo Alvarenga, Sano, Paulo Takeo, Lucas, Eve (2025): Amidst the cloud forests of the mountains, three new species of Brazilian Myrceugenia (Myrtaceae) are described. Phytotaxa 691 (2): 201-210, DOI: 10.11646/phytotaxa.691.2.6, URL: https://doi.org/10.11646/phytotaxa.691.2.6
03A087DA864F865ADC83FD7CFDE6FD74.taxon	materials_examined	TYPE: — BRAZIL. São Paulo: Campos do Jordão, São José dos Alpes, 22 º 43 ’ 33 ” S, 45 º 27 ’ 28 ” W, ca. 1899 m elev., 07 July 2023, F. C. S. Vieira & H. Lisboa 3631 (holotype USP!, isotypes JOI!).	en	Vieira, Fábio Christiano Speck, Fonseca, Heitor Lisboa Da, Meireles, Leonardo Dias, Zavatin, Danilo Alvarenga, Sano, Paulo Takeo, Lucas, Eve (2025): Amidst the cloud forests of the mountains, three new species of Brazilian Myrceugenia (Myrtaceae) are described. Phytotaxa 691 (2): 201-210, DOI: 10.11646/phytotaxa.691.2.6, URL: https://doi.org/10.11646/phytotaxa.691.2.6
03A087DA864F865ADC83FD7CFDE6FD74.taxon	description	Figures 2, 4.	en	Vieira, Fábio Christiano Speck, Fonseca, Heitor Lisboa Da, Meireles, Leonardo Dias, Zavatin, Danilo Alvarenga, Sano, Paulo Takeo, Lucas, Eve (2025): Amidst the cloud forests of the mountains, three new species of Brazilian Myrceugenia (Myrtaceae) are described. Phytotaxa 691 (2): 201-210, DOI: 10.11646/phytotaxa.691.2.6, URL: https://doi.org/10.11646/phytotaxa.691.2.6
03A087DA864F865ADC83FD7CFDE6FD74.taxon	diagnosis	Diagnosis: — The species exhibits similarities to Myrceugenia cucullata D. Legrand (in Legrand 1957: 347, type image: PACA-AGP 4319; for description see Landrum 1981 b: 72); however, the latter is characterized by dibrachiate trichomes, blades with approximately 20 secondary veins, and the apex of the sepal forming a structure similar to a horn, called a cucullus. In contrast, M. nebulosa possesses both simple and dibrachiate trichomes, 12 – 18 pairs of secondary veins, and sepals without a cucullus.	en	Vieira, Fábio Christiano Speck, Fonseca, Heitor Lisboa Da, Meireles, Leonardo Dias, Zavatin, Danilo Alvarenga, Sano, Paulo Takeo, Lucas, Eve (2025): Amidst the cloud forests of the mountains, three new species of Brazilian Myrceugenia (Myrtaceae) are described. Phytotaxa 691 (2): 201-210, DOI: 10.11646/phytotaxa.691.2.6, URL: https://doi.org/10.11646/phytotaxa.691.2.6
03A087DA864F865ADC83FD7CFDE6FD74.taxon	description	Description: — Tree 4 – 8 m tall; bark rough to fissured, whitish to gray in color, light beige on young branches; young branches flat with subglobose section; trichomes adpressed, sericeous-flaky on young branches and petioles, light brown, simple and dibrachiate, the dibrachiate ones with a short and triangular central axis and symmetrical arms. Leaves with petioles cylindrical on the abaxial side and slightly furrowed on the adaxial side, 4 – 8 × 1 – 2.2 mm; laminas chartaceous, narrow – elliptical, 35 – 60 × 14 – 20 mm, about 2.5 times as long as wide, light green on the abaxial surface and dark green on the adaxial surface, inconspicuous translucent glands visible under a magnifying glass, 1 – 3 per reticulum; base attenuate, apex acuminate, margin gently revolute, primary vein prominent on the abaxial surface and furrowed on the adaxial; secondary veins leaving the midvein at angles of approximately 45 º, inconspicuous to the naked eye and barely noticeable even under a magnifying glass, around 12 – 18 pairs, more visible on the abaxial surface, not apparent on the adaxial surface; marginal veins inconspicuous, about 0.2 – 0.6 mm from the edge. Flowers solitary, bracts absent; peduncles 3.2 – 4 × 0.4 – 1.2 mm, covered by simple and dibrachiate trichomes, beige to brown; bracteoles deltoid – triangular, 1.8 – 2.4 × 0.8 – 1 mm, internally concave and almost glabrous, externally covered by simple and dibrachiate, beige trichomes, and with the presence of a prominent rib, free at the base, inserted into the base of the ovary, not reaching the median portion of the flower bud; flower buds globose with petals visible; sepals triangular, 2.2 – 2.4 × 1.6 – 2.4 mm, with a rounded apex, covered by brown to beige trichomes externally, internally concave and with hyaline, simple and dibrachiate trichomes; petals white, orbicular, 3.6 – 5.6 × 3.2 – 5.2 mm, with sericeous, hyaline trichomes scattered on both sides, with some translucent glands evident; stamens 84 – 96, semi-curved in bud, 2.5 × 0.1 mm; style 5.2 × 0.3 mm, covered with sparse simple hyaline trichomes, stigma punctate; ovary trilocular, 7 – 9 ovules per locule, 23 – 25 ovules in total; fruits ellipsoid, 4 – 5 × 3 – 4 mm, darkened when mature.	en	Vieira, Fábio Christiano Speck, Fonseca, Heitor Lisboa Da, Meireles, Leonardo Dias, Zavatin, Danilo Alvarenga, Sano, Paulo Takeo, Lucas, Eve (2025): Amidst the cloud forests of the mountains, three new species of Brazilian Myrceugenia (Myrtaceae) are described. Phytotaxa 691 (2): 201-210, DOI: 10.11646/phytotaxa.691.2.6, URL: https://doi.org/10.11646/phytotaxa.691.2.6
03A087DA864F865ADC83FD7CFDE6FD74.taxon	distribution	Distribution, habitat and phenology: — This species is found in the municipalities of Camanducaia and along the Campos do Jordão Plateau, at the limits between the states of Minas Gerais and São Paulo, respectively, along the Mantiqueira mountain range, at elevations of around 1800 – 2000 m in upper montane forests. It has been recorded flowering and fruiting from June to October.	en	Vieira, Fábio Christiano Speck, Fonseca, Heitor Lisboa Da, Meireles, Leonardo Dias, Zavatin, Danilo Alvarenga, Sano, Paulo Takeo, Lucas, Eve (2025): Amidst the cloud forests of the mountains, three new species of Brazilian Myrceugenia (Myrtaceae) are described. Phytotaxa 691 (2): 201-210, DOI: 10.11646/phytotaxa.691.2.6, URL: https://doi.org/10.11646/phytotaxa.691.2.6
03A087DA864F865ADC83FD7CFDE6FD74.taxon	conservation	Conservation status: — Some collections of this species were made in regions adjacent to the Campos do Jordão State Park, beyond the protected zone. Additionally, several specimens have been recorded from the Pedra do Selado region in Monte Verde, located within the municipality of Camanducaia. The analysis conducted using GEOCAT indicates that the species should be classified as Critically Endangered based on its extent of occurrence, (EOO = 30.879 km ²), and Endangered by area of occupation (AOO = 16 km ²).	en	Vieira, Fábio Christiano Speck, Fonseca, Heitor Lisboa Da, Meireles, Leonardo Dias, Zavatin, Danilo Alvarenga, Sano, Paulo Takeo, Lucas, Eve (2025): Amidst the cloud forests of the mountains, three new species of Brazilian Myrceugenia (Myrtaceae) are described. Phytotaxa 691 (2): 201-210, DOI: 10.11646/phytotaxa.691.2.6, URL: https://doi.org/10.11646/phytotaxa.691.2.6
03A087DA864F865ADC83FD7CFDE6FD74.taxon	description	Affinities: — This species is morphologically similar to Myrceugenia cucullata, with which it has often been confused in herbarium specimens. However, based on the criteria established in this study, M. cucullata is primarily a southern Brazilian species that can be distinguished by its approximately 20 secondary veins at each side. In contrast, M. nebulosa is endemic to the Mantiqueira mountain range and typically exhibits 12 to 18 pairs of secondary veins, in addition to the distinguishing features outlined in the diagnosis.	en	Vieira, Fábio Christiano Speck, Fonseca, Heitor Lisboa Da, Meireles, Leonardo Dias, Zavatin, Danilo Alvarenga, Sano, Paulo Takeo, Lucas, Eve (2025): Amidst the cloud forests of the mountains, three new species of Brazilian Myrceugenia (Myrtaceae) are described. Phytotaxa 691 (2): 201-210, DOI: 10.11646/phytotaxa.691.2.6, URL: https://doi.org/10.11646/phytotaxa.691.2.6
03A087DA864F865ADC83FD7CFDE6FD74.taxon	etymology	Etymology: — The specific epithet pertains to the challenges encountered in distinguishing this species over an extended period, thus denoting characteristics that are nebulous, vague, or uncertain. Additionally, it indicates the nebular environment in which the species is found, particularly in forested areas at elevated altitudes where orographic rainfall or fog frequently occurs.	en	Vieira, Fábio Christiano Speck, Fonseca, Heitor Lisboa Da, Meireles, Leonardo Dias, Zavatin, Danilo Alvarenga, Sano, Paulo Takeo, Lucas, Eve (2025): Amidst the cloud forests of the mountains, three new species of Brazilian Myrceugenia (Myrtaceae) are described. Phytotaxa 691 (2): 201-210, DOI: 10.11646/phytotaxa.691.2.6, URL: https://doi.org/10.11646/phytotaxa.691.2.6
03A087DA864F865ADC83FD7CFDE6FD74.taxon	materials_examined	Paratypes: — BRAZIL. Minas Gerais: Monte Verde, Camanducaia, Pedra do Selado, 28 June 2001, L. D. Meireles 315 (UEC!); ibidem 28 June 2001, L. D. Meireles 341 (UEC!); Monte Verde, Camanducaia, 29 June 2001, L. D. Meireles 383 (UEC!); ibidem, 21 August 2001, L. D. Meireles, T. B. Breier & R. Belinello 463 (UEC!); ibidem, 19 September 2001, L. D. Meireles, A. Flores, R. S. Rodrigues & R. Belinello 564 (UEC!); ibidem, 19 September 2001, L. D. Meireles 565 (UEC!); ibidem, 19 September 2001, L. D. Meireles 570 (UEC!); ibidem, 19 September 2001, L. D. Meireles & B. Z. Gomes 1157 (UEC!); ibidem, 19 October 2002, L. D. Meireles, C. F. Verola & I. Costa 1188 (UEC!); São Paulo: Campos do Jordão, Estrada para São José dos Alpes, 21 June 1988, A. Furlan 526 (UEC!). Idem, 07 July 2023, F. C. S. Vieira & H. Lisboa 3632 (JOI!, SPF!).	en	Vieira, Fábio Christiano Speck, Fonseca, Heitor Lisboa Da, Meireles, Leonardo Dias, Zavatin, Danilo Alvarenga, Sano, Paulo Takeo, Lucas, Eve (2025): Amidst the cloud forests of the mountains, three new species of Brazilian Myrceugenia (Myrtaceae) are described. Phytotaxa 691 (2): 201-210, DOI: 10.11646/phytotaxa.691.2.6, URL: https://doi.org/10.11646/phytotaxa.691.2.6
03A087DA864C8654DC83FD6AFA9DFDBC.taxon	materials_examined	TYPE: — BRAZIL. São Paulo: Campos do Jordão, São José dos Alpes, 22 º 42 ’ 34 ” S, 45 º 26 ’ 29 ” W, 07 July 2024, F. C. S. Vieira & H. Lisboa 3633 (holotype USP!, isotypes JOI!).	en	Vieira, Fábio Christiano Speck, Fonseca, Heitor Lisboa Da, Meireles, Leonardo Dias, Zavatin, Danilo Alvarenga, Sano, Paulo Takeo, Lucas, Eve (2025): Amidst the cloud forests of the mountains, three new species of Brazilian Myrceugenia (Myrtaceae) are described. Phytotaxa 691 (2): 201-210, DOI: 10.11646/phytotaxa.691.2.6, URL: https://doi.org/10.11646/phytotaxa.691.2.6
03A087DA864C8654DC83FD6AFA9DFDBC.taxon	description	Figures 2, 5.	en	Vieira, Fábio Christiano Speck, Fonseca, Heitor Lisboa Da, Meireles, Leonardo Dias, Zavatin, Danilo Alvarenga, Sano, Paulo Takeo, Lucas, Eve (2025): Amidst the cloud forests of the mountains, three new species of Brazilian Myrceugenia (Myrtaceae) are described. Phytotaxa 691 (2): 201-210, DOI: 10.11646/phytotaxa.691.2.6, URL: https://doi.org/10.11646/phytotaxa.691.2.6
03A087DA864C8654DC83FD6AFA9DFDBC.taxon	diagnosis	Diagnosis: — The species resembles Myrceugenia alpigena (DC.) Landrum (in Landrum 1980: 372; basionym: Eugenia alpigena De Candolle [1828: 265]; type image: M 0136822); however, the latter is characterized by dibrachiate trichomes, approximately 10 secondary veins at each side, and 4 – 12 ovules per locule. In contrast, M. oreades possesses both simple and dibrachiate trichomes, 5 – 7 pairs of secondary veins, and 2 – 4 ovules per locule.	en	Vieira, Fábio Christiano Speck, Fonseca, Heitor Lisboa Da, Meireles, Leonardo Dias, Zavatin, Danilo Alvarenga, Sano, Paulo Takeo, Lucas, Eve (2025): Amidst the cloud forests of the mountains, three new species of Brazilian Myrceugenia (Myrtaceae) are described. Phytotaxa 691 (2): 201-210, DOI: 10.11646/phytotaxa.691.2.6, URL: https://doi.org/10.11646/phytotaxa.691.2.6
03A087DA864C8654DC83FD6AFA9DFDBC.taxon	description	Description: — Shrubs 1 – 1.5 m, bark rough, gray to beige in color, light brown on young branches; young branches cylindrical; trichomes adpressed, simple and dibrachiate, the dibrachiate ones with a short, triangular central axis and short symmetrical arms, sericeous – flaky on young branches, light brown, shedding over time on petioles, lighter and more sparse on the abaxial leaves surface. Leaves with cylindrical petioles, slightly furrowed on the adaxial side, 1.2 – 1.8 × 0.6 – 0.8 mm; lamina chartaceous, ovate – elliptical. 14 – 19 × 4 – 8 mm, about 2.7 times as long as wide, light green on the abaxial surface and dark green on the adaxial surface, few translucent glands protruding on the abaxial surface, number of translucent glands per reticulum, visible under a magnifying glass, is unclear due to the indistinct reticulum; base cuneate; apex rounded, with a small mucron visible under magnification, margin revolute; primary vein slightly protruding on the abaxial surface, and lightly furrowed on the adaxial side; secondary veins leaving the midvein at an angle of approximately 45 º, inconspicuous to the naked eye and barely noticeable even under magnification, around 5 – 7 pairs on the abaxial surface, not visible on the adaxial surface; marginal vein inconspicuous. Flowers solitary, bracts absent; peduncles covered by simple and dibrachiate trichomes, beige to brown, 1.2 × 0.5 mm; bracteoles narrow-triangular, 2.2 – 2.4 × 0.7 – 1 mm, internally weakly concave and glabrous, externally covered by simple and dibrachiate beige trichomes, with a prominent rib, free at the base, inserted into the base of the ovary, reaching the median portion of the flower bud; flower buds globose with visible petals; sepals rounded, 1.8 – 2 × 1.3 – 1.6 mm, with an obtuse apex, covered with brown to beige trichomes on the external surface and tufts of trichomes at the apex, concave, internally greenish with scattered hyaline trichomes; petals orbicular, 3.4 – 4 × 2.4 – 2.8 mm, glabrous, mostly white, greenish in the center where translucent glands appear; stamens semi-curved in the bud, 2.8 × 0.1 mm, 69 – 88; ovary bilocular, with 2 – 4 ovules per locule, 4 – 8 ovules in total; style 3.1 × 0.2 mm, covered with sparse simple hyaline trichomes, stigma punctate; fruits not seen.	en	Vieira, Fábio Christiano Speck, Fonseca, Heitor Lisboa Da, Meireles, Leonardo Dias, Zavatin, Danilo Alvarenga, Sano, Paulo Takeo, Lucas, Eve (2025): Amidst the cloud forests of the mountains, three new species of Brazilian Myrceugenia (Myrtaceae) are described. Phytotaxa 691 (2): 201-210, DOI: 10.11646/phytotaxa.691.2.6, URL: https://doi.org/10.11646/phytotaxa.691.2.6
03A087DA864C8654DC83FD6AFA9DFDBC.taxon	distribution	Distribution, habitat and phenology: — The species has been documented exclusively along the boundary between the municipalities of Campos do Jordão and Pindamonhangaba in the state of São Paulo, specifically in high-altitude grasslands at approximately 1800 meters of elevation. Observations of the species with flowers occurred between July and November.	en	Vieira, Fábio Christiano Speck, Fonseca, Heitor Lisboa Da, Meireles, Leonardo Dias, Zavatin, Danilo Alvarenga, Sano, Paulo Takeo, Lucas, Eve (2025): Amidst the cloud forests of the mountains, three new species of Brazilian Myrceugenia (Myrtaceae) are described. Phytotaxa 691 (2): 201-210, DOI: 10.11646/phytotaxa.691.2.6, URL: https://doi.org/10.11646/phytotaxa.691.2.6
03A087DA864C8654DC83FD6AFA9DFDBC.taxon	conservation	Conservation status: — All registered sampling specimens are situated in regions adjacent to the Campos do Jordão State Park; the species has not yet been documented within the protected area. The analysis conducted using GEOCAT indicates that the species should be classified as Critically Endangered based on its extent of occurrence, (EOO = 0.0 km ²), and by area of occupation (AOO = 4 km ²). Consequently, we assert that urgent conservation measures for the species must be implemented.	en	Vieira, Fábio Christiano Speck, Fonseca, Heitor Lisboa Da, Meireles, Leonardo Dias, Zavatin, Danilo Alvarenga, Sano, Paulo Takeo, Lucas, Eve (2025): Amidst the cloud forests of the mountains, three new species of Brazilian Myrceugenia (Myrtaceae) are described. Phytotaxa 691 (2): 201-210, DOI: 10.11646/phytotaxa.691.2.6, URL: https://doi.org/10.11646/phytotaxa.691.2.6
03A087DA864C8654DC83FD6AFA9DFDBC.taxon	description	Affinities: — The species exhibits a superficial resemblance to Myrceugenia alpigena (for description see Landrum 1981 b); however, based on the criteria established in this study, M. alpigena, is a species that is widely distributed in the southeast and south of Brazil, and it is characterized by a maximum of 5 – 7 secondary veins and leaf proportions of 1.6 / 1. However, M. oreades is endemic to the mountains located on the borders of the Campos do Jordão and Pindamonhangaba municipalities, and typically exhibits 10 pairs of secondary veins, and leaf proportions of 2 – 5 / 1, in addition to the distinguishing features outlined in the diagnosis.	en	Vieira, Fábio Christiano Speck, Fonseca, Heitor Lisboa Da, Meireles, Leonardo Dias, Zavatin, Danilo Alvarenga, Sano, Paulo Takeo, Lucas, Eve (2025): Amidst the cloud forests of the mountains, three new species of Brazilian Myrceugenia (Myrtaceae) are described. Phytotaxa 691 (2): 201-210, DOI: 10.11646/phytotaxa.691.2.6, URL: https://doi.org/10.11646/phytotaxa.691.2.6
03A087DA864C8654DC83FD6AFA9DFDBC.taxon	etymology	Etymology: — The specific epithet is derived from the Oreades nymphs, who were believed to inhabit and protect the mountains of ancient Greece. This concept also relates to Martius (1840) interpretation of Brazilian mountainous phytogeographical regions.	en	Vieira, Fábio Christiano Speck, Fonseca, Heitor Lisboa Da, Meireles, Leonardo Dias, Zavatin, Danilo Alvarenga, Sano, Paulo Takeo, Lucas, Eve (2025): Amidst the cloud forests of the mountains, three new species of Brazilian Myrceugenia (Myrtaceae) are described. Phytotaxa 691 (2): 201-210, DOI: 10.11646/phytotaxa.691.2.6, URL: https://doi.org/10.11646/phytotaxa.691.2.6
03A087DA864C8654DC83FD6AFA9DFDBC.taxon	materials_examined	Paratypes: — BRAZIL. São Paulo: Campos do Jordão, São José dos Alpes, Parque Estadual de Campos do Jordão, Estrada de terra “ Caminho de Aparecida ”, próxima à entrada do parque. Beira da estrada, lado direito. 28 August 2012, C. L. Silva-Luz 959 (USP!); São Paulo: Pindamonhangaba, 05 November 2022, N. Ivanauskas 7296 (SPSF *).	en	Vieira, Fábio Christiano Speck, Fonseca, Heitor Lisboa Da, Meireles, Leonardo Dias, Zavatin, Danilo Alvarenga, Sano, Paulo Takeo, Lucas, Eve (2025): Amidst the cloud forests of the mountains, three new species of Brazilian Myrceugenia (Myrtaceae) are described. Phytotaxa 691 (2): 201-210, DOI: 10.11646/phytotaxa.691.2.6, URL: https://doi.org/10.11646/phytotaxa.691.2.6
