taxonID	type	description	language	source
7B6B879FB87AFFAECB9DFF21FA733AB9.taxon	materials_examined	Type: — GUYANA. Potaro-Siparuni: Upper Kuribrong River, 05 ° 20 ’ 16 ” N, 59 ° 33 ’ 57 ” W, 475 m, 18 March 2011, C. E. Zartman, M. M. Pombo, Y. M. Glen & C. Perry 9095 (holotype INPA 241497!, isotype US 3687395). Epiphyte, caudex 17 × 13 mm. Leaf sheaths 6.7 – 8.2 × 2 – 2.3 cm, membranous, many-nerved, conduplicate, auricles absent or poorly developed (up to 2 mm long); base of leaf blades gradually passing into a petiole, 8 – 12 cm long, 2 – 3 mm wide; leaf blades 32 – 41 × 1.4 – 1.8 cm, linear, acuminate at apex, finely nerved on both sides, the midrib prominent abaxially. Peduncles filiform, 17 – 20.5 cm long, 0.7 – 0.8 mm wide, 5 – nerved, compressed, except below the inflorescence, where dilated 9 – 10 mm wide. Inflorescence compressed, 9 – 12 × 10 – 14 mm, without involucral bracts. Spikelets 5 – 7 per inflorescence, 6.3 – 7 × 2 – 2.7 mm (including the sepals), fusiform; bracteoles 20 – 22, obtuse, inconspicuously nerved, chartaceous, brown, darker maculate at apex, gradate, the lower outer ones 0.5 – 0.7 × 0.7 – 1 mm, ovate-suborbicular, the upper inner ones 3 – 3.5 × 1 – 1.2 mm, ovate-lanceolate. Sepals 3, 5 – 5.2 × 1.5 – 1.7 mm, free, lanceolate, acute at apex, subindurate, dark yellow; petals yellow, connate at the base into a tube 1.5 – 2 mm long, petal blades not seen; stamens 6; filaments 1.5 – 2 mm long, connate at the base, anthers 2 – 2.6 × 0.3 – 0.4 mm, linear-lanceolate, smooth, subsagittate, 2 - thecal, 4 - loculate, opening by 1 apical pore; ovary 3 - carpellate, 1 × 1.5 mm, depressed-globose, style 5 mm long, placentation axial, ovules 5 – 7 per locule, covered by a mucilaginous, hyaline matrix. Capsule 3.5 – 3.7 mm long, loculicidal; a single seed seen per locule, seed 1.6 – 1.8 × 0.9 – 1 × 0.5 mm, compressed-ellipsoid, testa alveolate, black, partially covered by a white spongy (in a dry state) arillate structure.	en	Rodrigues, Rodrigo Schütz, Flores, Andréia Silva (2017): A new species of Epidryos (Rapateaceae) from Guyana. Phytotaxa 297 (2): 197-202, DOI: 10.11646/phytotaxa.297.2.7, URL: http://dx.doi.org/10.11646/phytotaxa.297.2.7
7B6B879FB87AFFAECB9DFF21FA733AB9.taxon	distribution	Distribution, habitat and phenology: — Epidryos matheusii is known only from Guyana in the riparian zone from upper Kuribrong River at 475 m elev. (Fig. 3). Flowers and fruits were collected in March and April. It is the second species of Epidryos recorded for Guyana, with E. guayanensis mentioned for the country by Maguire (1965).	en	Rodrigues, Rodrigo Schütz, Flores, Andréia Silva (2017): A new species of Epidryos (Rapateaceae) from Guyana. Phytotaxa 297 (2): 197-202, DOI: 10.11646/phytotaxa.297.2.7, URL: http://dx.doi.org/10.11646/phytotaxa.297.2.7
7B6B879FB87AFFAECB9DFF21FA733AB9.taxon	discussion	Comments: — Epidryos matheusii is clearly distinct from its congeners, characterized by its long-petioled leaves and small bracteoles and sepals (see key below). It can be separated from E. micrantherus (type: US barcode 00088543!) by its subfiliform peduncles 0.7 – 0.8 mm wide and anthers 2 – 2.6 mm long (vs. coarse peduncles 1 – 1.5 mm wide and anthers 1.8 mm long in E. micrantherus). Epidryos matheusii differs from the other two species in having spikelets 6.3 – 7 mm long, whereas E. allenii (type: F barcode V 0077973 F!) and E. guayanensis (type: NY barcode 00102397!) have spikelets 10 – 14 mm long. Epidryos matheusii apparently is restricted to areas in the vicinity of the Kaieteur National Park in Guyana. This region has a high biological relevance, encompassing many different habitats that host several rare species of animals and plants (Kelloff 2003). According to Kelloff & Funk (2004), 23 species and one genus of angiosperms are endemic to the Kaieteur National Park, including two species of Rapateaceae, Potarophytum riparium Sandwith (1939: 21) and Stegolepis ferruginea Baker (1882: 331).	en	Rodrigues, Rodrigo Schütz, Flores, Andréia Silva (2017): A new species of Epidryos (Rapateaceae) from Guyana. Phytotaxa 297 (2): 197-202, DOI: 10.11646/phytotaxa.297.2.7, URL: http://dx.doi.org/10.11646/phytotaxa.297.2.7
7B6B879FB87AFFAECB9DFF21FA733AB9.taxon	etymology	Etymology: — It is a pleasure to name this species for our son Matheus, who has been actively helping us in our botanical fieldwork in the Brazilian Amazonia. Paratypes: — GUYANA. Potaro-Siparuni: Riparian Zone Upper Kuribrong, April 2010, C. E. Zartman, Y. M. Glen & C. Perry 8267 (INPA, UFRR).	en	Rodrigues, Rodrigo Schütz, Flores, Andréia Silva (2017): A new species of Epidryos (Rapateaceae) from Guyana. Phytotaxa 297 (2): 197-202, DOI: 10.11646/phytotaxa.297.2.7, URL: http://dx.doi.org/10.11646/phytotaxa.297.2.7
