Anthurium utleyorum Croat & Baker,

Brenesia 16 (Supl. I): 100. 1979.

Epiphyte; stems short, densely covered by cataphyll fibers; roots few, moderately long, descending, 2-3 mm diam.; cataphylls 3-6 cm long, apiculate at apex, drying tan, weathering into dense, tangled, persisting fibers.

LEAVES spreading; petioles 8.5-24 cm long, 2-5 mm diam., sublercte, shallowly sulcate to weakly flattened adaxially, rounded abaxially; geniculum 0.8-2 cm long; blades moderately thick, oblong to oblong-elliptic or oblong-oblanceolate, acuminate at apex, acute to obtuse or narrowly rounded at base, 15-35 cm long, 3.3-7.5 cm wide, broadest near middle or just above; both surfaces punctate, conspicuously black punctate on lower surface; midrib convexly raised near base above, narrowed toward apex, prominulous below; primary lateral veins 14-20 per side, departing midrib at ca. 45° angle, ± obscure above, scarcely visible below; collective vein arising from the base, scarcely visible above and below, 2-7 mm from margin (often more remote from margin in lower half of blade than in upper half).

INFLORESCENCE usually erect-spreading, equalling or shorter than leaves; peduncle 10-27 cm long, 2-3 mm diam., as long as or longer than petioles;
spathe green to purple, narrowly lanceolate, 3.4-6 cm long, 1-1.5 cm wide, broadest at base, acuminate at apex, obtuse to rounded at base, inserted at 45° angle on peduncle; stipe 1-6 mm in front, to 3 mm in back, ca. 2 mm diam.; spadix green to brownish-red or purplish-green, 2-15 cm long, 7-9 cm diam. at base, 3-5 mm diam. at apex; flowers rhombic to 4-lobed, 2.1-2.5 mm long, 2-2.5 mm wide, the sides sigmoid; 4-5 flowers visible in the principal spiral, 5-9 flowers visible in the alternate spiral; tepals glossy, densely, weakly and minutely papillate, lateral tepals 1.2-2.5 mm wide, the inner margin convex; pistils emergent 0.3-0.5 mm, white; stigmas elliptic, ca. 0.4 mm long with small droplets before stamens emerge; stamens emerging rapidly from the base, lateral stamens preceding alternates by only 1-2 spirals, exserted on filament ca. 0.5 mm long, which quickly retract to hold anthers at edge of tepals; anthers ca. 0.4 mm long, 0.6 mm wide; thecae white, dish-like, ellipsoid; pollen while.

INFRUCTESCENCE with orange, ovoid berries. Fig. 216.

The species is known from Costa Rica in forests in vicinity of San Ramon and near Monteverde at elevations of 760 to 1,690 m.
Anthurium utleyorum is in section Porphyrochitonium and is most closely related to A. friedrichsthalii, but differs from it in its shorter and broader leaves and its beaked berries. The species is named in honor of John and Kathy Utley, who made many important collections of Araceae in Costa Rica.

  Map of Mesoamerican specimens with coordinates

Costa Rica : 1000 m, 10.20N 84.50W, 11 Sep 1986, William A. Haber ex Eric Bello C. & Michelle Powell 5608 (MO).
Costa Rica Alajuela: 1540-1575 m,, 18 junio 1985, William A. Haber & Eric Bello C. 1673 (MO)
Costa Rica Alajuela: W 800-1000 m, 10.11253"N 84.13628", 3 noviembre 1986, Gerardo Herrera Ch. & Victor Mora 182 (MO).
Costa Rica Alajuela: 800-1000 m,, 26 enero 1987, G. Herrera Ch., V. Mora, Abelardo e Isidro Chacón y A. Solis 412 (MO).
Costa Rica Alajuela: 1100 m,, 4 Mar 1983, Carvajal U., A. 464 (MO).
Costa Rica Alajuela: 1100 m, 10.12.30N 84.35.15W, 22 Feb 1991, Herrera, G. 4947 (INB, CR).
Costa Rica Alajuela: R.F. San Ramón; Cordillera de Tilarán, 1100 m, 10.12.30N 84.35.15W, 22 February 1991, Gerardo Herrera 4954 (CR, MO).
Costa Rica Cartago:, 13 December 1996, Thomas B. Croat 79445 (MO).
Costa Rica Guanacaste: 1400 m, 10.22N 84.49W, 10 November 1988, William Haber & Willow Zuchowski 8745 (CR, INB, MO).
Costa Rica Guanacaste: 1550 m, 10.20N 84.48W, 31 January 1989, William Haber 9042 (MO).
Costa Rica Guanacaste: 1100 m, 10.46N 85.49W, 26 November 1987, Gerardo Herrera 1409 (MO).
Costa Rica Guanacaste: 900-1200 m, 10.47N 85.18W, 27-28 Jan 1983, G. Davidse et al. 23464 (MO).
Costa Rica Guanacaste: 900-1200 m, 10.47N 85.18W, 27-28 Jan 1983, G. Davidse et al. 23467 (MO).
Costa Rica Guanacaste: 900-1200 m, 10.47N 85.18W, 27-28 Jan 1983, G. Davidse et al. 23468 (MO).
Costa Rica Puntarenas: 1500 m, 10.15N 84.48W, 9 January 1990, Erick Bello 1723 (MO).
Costa Rica Puntarenas: Monteverde,, 19 Aug 1991, Ingram 1099 (MO).
Costa Rica Puntarenas: 1500 m, 10.17N 84.47W, 13 March 1989, William Haber & Willow Zuchowski 9129 (MO).
Costa Rica Puntarenas: 1600 m,, 12 julio 1985, William A. Haber & Eric Bello C. 1968 (MO).
Costa Rica Puntarenas: Monteverde Reserve, 1500-1550 m, 10.18N 84.48W, 17 Feb 1992, Ingram & Ferrell-Ingram 1339 (MO).
Costa Rica Puntarenas: 1400 m, 10.20N 84.50W, 15 MAY 1986, William A. Haber ex Eric Bello C. & L. Lierheimer 4923 (MO).
Costa Rica Puntarenas: 1500-1620 m,, 10 Aug. 1983, Willow Z. Pounds 26 (MO).
Costa Rica Puntarenas: 1500-1620 m,, 6 Sept. 1984, Willow Z. Pounds 322 (MO).
Costa Rica Puntarenas: 1500-1620 m,, 31 May 1985, Willow Z. Pounds 487 (MO).
Costa Rica Puntarenas: 1500-1550 m, 10.18N 84.47W, 12 February 1985, Michael Grayum, Pam Sleeper & Nancy Machado 5122 (MO).
Costa Rica Puntarenas: 1300 m, 10.15N 84.48W, 12 January 1990, Erick Bello 1793 (INB,MO).
Costa Rica Puntarenas: Reserva Biológica Monteverde, 1300 m, 10.16N 84.22W, 4 May 1991, Bello et al. 2720 (INB, CR).