Anthurium peripense Engler., Bot. Jahrb. Syst. 25: 442. (1898). Type: Ecuador. Manabi: Río Peripa, Sodiro s.n. (B, holotype). Anthurium rircayanum Sodiro, Anal. Univ. Centr. (Quito) 22(156): 21. (1906). Type: Ecuador. Guayas: Río Rircay, Rimbach s.n. (B, holotype).

Terrestrial, or caespitose on rocks, sometimes epiphytic; stem 9–30 cm long, 1.5–2.5 cm diam.; roots numerous, dense, spreading to descending, white to green, whitish or brown on drying, more or less smooth, thick and short to slender and elongate, weakly tapered at apex, 2–4 mm diam.; cataphylls subcoriaceous, 8–9(16) cm long, acuminate and apiculate at apex, pale green, drying tan, persisting intact, eventually as a reticulum of fibers. Leaves erect to erect-spreading; petioles (8)16–42 cm long, 5–15 mm diam., broadly triangular, convex daxially with weak medial ridge, the margins prominently and sharply raised, almost winged, bluntly to sharply angular abaxially, the surface conspicuously pale short-lineate; geniculum slightly thicker and paler than petiole, 1–2 cm long; blades moderately coriaceous, broadly lanceolate to oblong-elliptic to oblanceolate, long-acuminate at apex (the acumen short-apiculate), acute to obtuse at base, (31)40–70(82) cm long, (5)9–28 cm wide, broadest at or above the middle, the margins flat to broadly undulate; upper surface glossy, dark green, lower surface glossy to semiglossy, conspicuously paler; both surfaces matte when dried, green to brown; midrib prominently convex at base, becoming higher than broad toward the apex above, pale short-lineate and paler than surface, prominently and sharply acute-raised below, raised above and below when dried, paler than surface below, same as surface above; primary lateral veins numerous, ca. 20–30 per side, departing midrib at 50–75 degree angle, straight-ascending, weakly visible above and below when fresh, slightly raised on both surfaces when dried; interprimary veins almost as conspicuous as primary lateral veins; tertiary veins weakly visible when dried; collective vein arising from near the base or in the upper third of the blade, slightly more prominent than primary lateral veins when fresh below, equally as prominent as primary lateral veins when dried, 2–13 mm from margin. Inflorescences erect to spreading, shorter than leaves; peduncle 23–50(62) cm long, 3–7 mm 2–3-ridged, 2–3 times as long as petiole, green heavily tinged with red-violet at base, faintly red-violet toward the apex; spathe eflexed-spreading, subcoriaceous, green tinged with red-violet (B & K yellow-green 6/7.5), linear-lanceolate to lanceolate, 6–10 cm long, 0.4–1.5 cm wide, broadest near the base or in lower third, inserted at 60–70 degree angle on peduncle, long-acuminate at apex (the acumen inrolled), acute at base, the margins meeting at 90 degree angle; spadix brownish purple (B & K red-purple 2/10) to dark purple, rarely dark olive-green, cylindroid to weakly tapered, sessile or stipitate 1–2 mm, erect, 5.5–16 cm long, 5–6 mm diam. midway; flowers more or less square to 4-lobed, 1.9–2.5 mm long, 2–2.4 mm wide, the sides jaggedly sigmoid; 4–6 flowers visible in principal spiral, 8–10 in alternate spiral; tepals matte to semiglossy, densely papillate; lateral tepals 0.7–1.2 mm wide, the inner margins straight, the outer margins 2-sided, sometimes weakly 4-sided; pistils raised but not emergent, or held slightly above the tepals, green; stigma ellipsoid, 0.4 mm long, brush-like; stamens emerging shortly above the tepals, laterals emerging almost to the apex before alternates emerge; filaments fleshy, translucent or purplish, 0.5–0.8 mm long, 0.4–0.8 mm wide; anthers yellow to purplish, 0.3–0.6 mm long, 0.4–0.7 mm wide, inclined over the pistil; thecae oblong, drying ovoid, scarcely divaricate; pollen white to yellow-orange fading to tan. Infructescence with spathe persisting; spadix 8–22 cm long, 0.5–1.4 cm diam.; berries reddish to dark purplish violet, ovoid, exserted, acute at apex, drying 4.2–6 mm long, 2–2.5 mm diam.

Type: Ecuador. Pichincha: Río Napac ("Napa"), Sodiro s.n. (B, holotype). Anthurium peripense Engler., Bot. Jahrb. Syst. 25: 442. (1898). Type: Ecuador. Manabi: Río Peripa, Sodiro s.n. (B, holotype). Anthurium rircayanum Sodiro, Anal. Univ. Centr. (Quito) 22(156): 21. (1906). Type: Ecuador. Guayas: Río Rircay, Rimbach s.n. (B, holotype).

Esmeraldas: 300 m, Cobb 77 (MO); Reserva Indigena Awa, Ricaurte, 300 m, 1°10'N, 78°32'W, Tipaz et al. 2024 (MO). Manabi: Río Peripa, Sodiro s.n. (B); Estero Perro Muerto, Machalilla National Park, below San Sebastian, 400--420 m, 1°36'S, 80°42'W, Gentry & Josse 72685 (MO, QCNE); Inland road from Puerto Lopez to S of Río Ayampe, 105 m, 1°45'S, 80°40'W, Thompson 373A (MO). Guayas: Naranjal, Entable, below 500 m, Lehmann s.n. (K); Río Rircay, Rimbach s.n. (B); Bucay, 420 m, Camp E-3648 (NY, MO); Reserva Ecologica Churute, cumbre del cerro Cimalon, 350 m, 2°25'S, 79°38'W, Cornejo & Bonifaz 5147 (GUAY, MO, QCNE). Carchi: Peñas Blancas, 900 m, Christenson 1535 (MO). Pichincha: Quito--Santo Domingo de los Colorados, Chiriboga Road, Estacíon Los Faísanes, 12 km from Río Pilatón, 1400 m, Harling & Andersson 23128 (GB); Río Pilatón, Allurquín, 22 km E of Santo Domingo, 950 m, 0°15'S, 78°58'W, Hammel & Wilder 16073 (B, K, MO); Km 23 on Santo Domingo--Puerto Limón road, 100 m, 0°21'S, 79°22'W, Kvist 40676 (AAU); San Juan, La Palma, 930 m, Croat 38739 (F, MO); Allurquín--Chiriboga, 1100 m, Madison 4069 (K, SEL). Río Blanco, below confluence with Río Toachi, 300 m, Harling 4516 (S); along road from main Aloag--Santo Domingo Highway to Chiriboga near its start at Río Toachi, 0.1 km from main Aloag--Santo Domingo Road, ca. 1200 m, 0°18'S, 78°55'W, Croat 72955 (MO, QCNE). Río Napo, Sodiro s.n. (B). Cotopaxi: Quevedo--Latacunga: 800--950 m, 0°55'S, 79°10'W, Holm﷓Nielsen et al. 3021 (AAU); Río Pilaló, Quevado--Latacunga, Tenefuerste, 750--1300 m, Dodson 11987, Dodson & Gentry 12297, 12797 (MO, SEL). 3 km E of El Palmar, 800 m, Dodson & Gentry 10267 (MO, SEL); 55.5 km from Quevedo, 23.5 km E of La Mana, 930--950 m, 0°53'S, 79°4'W, Croat 57035 (CAS, BG, K, MBM, MEXU, MO, P, PMA): Quevedo--El Corazón, 1.9 km NW of El Corazón, 67.5 km SE of Quevedo, 1225 m, 1°7'S, 79°6'W, Croat 55829 (MO, QCA). Río Angamarca, Quevedo--El Corazón, Las Juntas, 200 m, Harling & Anderson 19025 (MO,GB); Quevedo--El Corazón, 63.4 km SE of Quevedo, 6 km NW of El Corazón, slopes near waterfall above Río Angamarca, 1030 m, 1°7'S, 79°7'W, Croat 55782 (AAU, F, M, MO, NY, QCA, RSA, US); Cantón Pilalo, Camino a la cumbre del cerro Puchuato, 1800--2500 m, 0°55'S, 79°9'W, Cerón & Villavicencio 2791 (MO, QCNE); Quevedo--Latacunga, Km 57, 700 m, Schwerdtfeger 22805 (MO). Bolivar: de carretera Chillanes--Bucay. En la hacienda "Tiquibuso" del Sr. Gómez, 2100 m, 1°55'S, 79°5'W, Zak & Jaramillo 2687 (MO). Chimborazo: Sibambe, 1000--1600 m, 16 Aug 1943, Solis 5342 (F). Río Chanchan, 5 km N of Huígra, 1667--2167 m, Camp 3428 (NY); 2800--3200 m, 1°58'S, 78°56'W, Clark et al.1241 (QCNE, MO). Canar: Azoques--El Triunfo, 1 km S of La Delicia, 2°27'S, 79°10'W, Croat 50876 (AAU, B, CAS, K, CM, M, MO, RSA, US); Azogues--El Triunfo, 5 km W of La Delicia, 8 km SE of El Truncal, 600 m, 2°27'S, 79°15'W, Croat 50904 (CM, MO). Cultivated plants:Tinalandia vicinity: Atlanta Botanical Garden (93-1432). Croat 78416 (MO); Atlanta Botanical Garden, 93-1436, Río Crystal, Croat 79415 (MO).