Anthurium lapathifolium Schott, Oesterr. Bot. Wochcnbl. 7: 309. 1857. TYPE: Panama, Fendler429 (K).
Anthurium triangulum Engl., Bot. Jahrb. Syst. 25: 383. 1898. TYPE: Costa Rica. Lim6n: Talamanca, in forest near Shirores, 100 m, Pittier & Tonduz 9225 (B).
Anthurium tsakianum Engl., Bot. Jahrb. Syst. 25: 423. 1898. TYPE: Costa Rica. Talamanca: in forest near Tsaki, 200 m, Tonduz 9510 (B, holotype; CR, isotype).
Anthurium baileyi Standl., Publ. Field Mus. Nat. Hist.,Bot. Ser. 22: 66. 1940. TYPE: Panama. Canal Zone: Barro Colorado Island, Bailey & Bailey 196 (F, holotype).

LEAVES erect-spreading; petioles terete or obscurely sulcate, 30-70(90) cm long, 5-8 mm diam., blades ovate-triangular, moderately thin, 39-75 cm long, 18-48 cm wide, acuminate at apex, deeply lobed at base; the anterior lobe 23-52 cm long; posterior lobes 11-22 cm from sinus lo outermost point; sinus narrowly triangular; the upper surface matte to semiglossy, the lower surface matte; the midrib raised above and below; primary lateral veins 4÷6, raised in valleys above, raised below; collective vein arising from the uppermost basal vein.

INFLORESCENCE erect, usually shorter than or sometimes longer than leaves; peduncles 24-63 cm long; spathe, green or pale green sometimes tinged with red-violet, lanceolate, 10-15(32) cm long, 3-5 cm wide; spadix green turning bright yellow, 7-22 cm long, 5-8 mm diam. at base, 4-6 mm diam. at apex; flowers 4-lobed, ca. 2.6 mm long (dry), ca. 2.3 mm wide (dry), the sides jaggedly sigmoid; ca. 6 flowers visible in the principal spiral, ca. 9 flowers visible in the alternate spiral; tepals glossy, lateral tepals 1.7-2 mm wide, the inner margin convex; pistil weakly emergent, green; stigma brushlike; stamens emerging scattered throughout length of spadix, usually the lateral stamens first, the alternates quickly following; anthers held over pistil; thecae yellow-orange; pollen orange.

INFRUCTESCENCE with spadix 11-24 cm long; berries violet-purple at apex, white at base, obovoid, 7-9 mm long. Figs. 122 and 123.
 

Anthurium ochranthum is known from Costa Rica to Panama from sea level to 1,350 m, most commonly in tropical wet forest but also in wetter parts of tropical moist forest and in premontane wet and premontane rain forest. The species is placed in section Belolonchium and is recogni/ed by its terrestrial habit, bright yellow, long-tapered spadix, violet-purple and white berries, and the leaf blades that have the anterior lobe sometimes concave along the margins. It is most closely related to A. pluricostatum. See the discussion following that species for differences.

Map of Mesoamerican specimens with coordinates

Costa Rica Alajuela: 700-900 m, 10.21N 84.41W, 20 August 1989, William Haber & Willow Zuchowski 9348 (MO).
Costa Rica Guanacaste: 450 m, 10.40.00N 84.04.30W, 25 January 1985, Michael Grayum, G. Herrera, O. Segura & P. Sleeper 4877 (MO).
Costa Rica Guanacaste: 860-920 m, 10.46.30N 85.18.00W, 25 Jan 1986, Michael H. Grayum, P. Sleeper, A. R. Smith & T. Béliz 6230 (MO).
Costa Rica Guanacaste: 600 m, 10.45N 85.18W, 8 March 1988, Gerardo Herrera 1620 (MO).
Costa Rica Guanacaste: 700 m, 11.02.00N 85.24.30W, 16 September 1990, Petrona Ríos en el curso II de Parataxónomos 45 (MO).
Costa Rica Guanacaste: 900-1200 m, 10.47N 85.18W, 27-28 Jan 1983, G. Davidse et al. 23347 (MO).
Costa Rica Heredia:, 2 Feb 1983, Garwood et al. 887 (BM).
Costa Rica Heredia: 480-500 m, 10.19.00N 84.04.30W, 6 April 1986, Michael H. Grayum 6824 (MO).
Costa Rica Heredia: 100 m,, 16 Nov 1982, Tim McDowell 771 (MO).
Costa Rica Lim—n: 400 m, 10.32.02N 83.30.26W, 28 July 1990, Ulises Chavarría en el curso II de Parataxónomos 157 (MO).
Costa Rica Lim—n: 90-200 m, 09.40.30N 83.02.00W, 31 July 1985, Michael H. Grayum & Barry Hammel 5784 (MO).
Costa Rica Lim—n: 240 m, 10.03N 83.26W, 2 September 1988, Michael Grayum, Gerardo Herrera & Rafael Robles 8670 (MO).
Costa Rica Lim—n: 10-20 m, 10.40N 83.40W, 13-14 Sep 1986, Gerrit Davidse & Gerardo Herrera 31034 (MO).
Costa Rica Lim—n: 250 m,, 17 July 1964, Jiménez, M. 2093 (NY).
Costa Rica Puntarenas: Zona Protectora Las Tablas, 1300-1800 m, 08.53.20N 82.50.30W, 22 Sep 1990, Mora 36 (CR, MO).
Costa Rica Puntarenas: 400 m, 8.39N 83.10W, 6 March 1985, T.B. Croat & M.H. Grayum 59940 (MO).
Costa Rica Puntarenas: 1500 m, 10.17N 84.48W, 17 Jul 1985, B. Hammel, C. Kremen & J. Trainer 14206 (MO).
Costa Rica Puntarenas: Fila Huacas, 400-500 m, 08.52N 83.17W, 23 Feb 1992, Grayum & Evans 10149 (MO).
Costa Rica Puntarenas: 120 m, 8.28N 83.35W, 21 March 1989, C. Kernan & Pamela Phillips 981 (MO).
Costa Rica Puntarenas: 500-620 m, 8.41.00N 82.56.30W, 12 Jul 1985, B. Hammel & M. Grayum 14182 (MO).
Costa Rica Puntarenas: R.F. Golfo Dulce; Península de Osa, 450 m, 08.41.40N 83.32.00W, 26 October 1990, Gerardo Herrera 4524 (CR).
Costa Rica Puntarenas: R.F. Golfo Dulce; Península de Osa, 400-100 m, 08.43.20N 83.32.20W, 5 November 1990, Gerardo Herrera 4579 (CR).
Costa Rica Puntarenas: 200 m, 08.45.08N 83.18.00W, 10 September 1996, Thomas B. Croat & Dylan Hannon 79165 .
Costa Rica Puntarenas: 110 m, 08.48.39N 83.16.18W, 10 September 1996, Thomas B. Croat & Dylan Hannon 79192 .
Costa Rica San José: 100 m.,, 31 May 1977, Ocampo 1692 (CR). Costa Rica San José: 150 m.,, 26-30 April 1977, Ocampo 1646 (CR).
Costa Rica San José: 300 m, 9.47.20N 84.32.00W, 16 February 1990, Rodolfo Zúñiga 126 (MO).
Costa Rica San José: Z.P. La Cangreja; Cerros de Puriscal, 500 m, 09.43.10N 84.23.20W, 10 Sep 1992, J.F. Morales 634 (CR).
Costa Rica San José: Z.P. La Cangreja; Cerros de Puriscal, 300 m, 09.41.45N 84.23.47W, 21 Oct 1992, J.F. Morales & Q. Jiménez 903 (CR).
Honduras Atlántida:, , Nelson 10661 (TEFH).
Honduras Atlántida:, , Nelson 10726 (TEFH).
Nicaragua Río San Juan: 50 m, 11.02N 84.25W, 21 marzo 1985, Pedro P. Moreno 25502 (MO).
Nicaragua Río San Juan: 100 m, 11.02N 84.27W, 9-10 Julio 1985, Pedro P. Moreno 26065 (MO).
Nicaragua Río San Juan: 100 m, 11.02N 84.27W, 9-10 Julio 1985, Pedro P. Moreno 26103 (MO).
Nicaragua Río San Juan:, 18 Febrero 1995, Ricardo Rueda, Blas Hernández y Indiana Coronado 3205 .
Nicaragua Río San Juan: 11.16N 084.16W, 29 Diciembre 1996, Ricardo Rueda, Indiana Coronado, Oscar Aráuz y Franklin Flores 5120 (MO).
Nicaragua Río San Juan: 11.09N 084.11W, 17 Febrero 1997, Ricardo Rueda, Indiana Coronado, Oscar Aráuz & Franklin Flores 6027 (MO).
Nicaragua Río San Juan: 11.05N 084.15W, 24 Febrero 1997, Ricardo Rueda, Indiana Coronado, Oscar Aráuz & Franlkin Flores 6302 (MO).
Nicaragua Zelaya: 10 m, 11.35N 83.51W, 07 Feb. 1982, Moreno, P. and Sandino, J. 15075 (MO).
Nicaragua Zelaya: 20 m, 11.32N 84.05W, 13 noviembre 1981, P.P.Moreno & J.C.Sandino 13006 (MO).
Nicaragua Zelaya: 11.31N 84.19W, 24 Febrero 1994, Ricardo Rueda, Blas Hernández e Indiana Coronado 3481 (MO).
Nicaragua Zelaya: 11.31N 84.19W, 24 Febrero 1994, Ricardo Rueda, Blas Hernández e Indiana Coronado 3489 (MO).
Nicaragua Zelaya: 11.31N 84.19W, 24 Febrero 1994, Ricardo Rueda, Blas Hernández e Indiana Coronado 3540 (MO).
Nicaragua Zelaya: 180-200 m, 11.40N 84.26W, 11-12 February 1978, W.D. Stevens 6352 (MO).
Panama Bocas del Toro: 5-110 m,, 24 Feb 1989, Peterson & Annable 7068 (US).
Panama Bocas del Toro: 300 m, 8.50N 82.15W, 4 March 1986, Gordon McPherson 8525 (MO).
Panama Canal Area: 09.11N 79.46W, 23 July 1994, Thomas B. Croat & Guanghua Zhu 77082 (MO).
Panama Canal Area: 9.18N 79.38W, 20 Jan. 1990, Thomas B. Croat 69861 (CM,MO).
Panama Canal Area: Barro Colorado Island,, 1 May 1968, Croat 5280 (GH, MO).
Panama Canal Area:, julio 1995, Stockwell & Lois O'Brien s.n. (US).
Panama CoclŽ: 600-800 m, 08.38N 08.35W, 8 July 1994, Thomas B. Croat & Guanghua Zhu 77228 (MO).
Panama CoclŽ: 500 m, 8.57N 80.34W, 16 February 1986, Scott Hoover 1321 (MO).
Panama Col—n: 500 m, 9.25N 79.40W, 17-18 Feb 1986, Barry Hammel, G. McPherson & D. Roubik 14486 (MO).
Panama Col—n: 250 m, 09.22.30N 79.41.30W, 6 April 1993, Thomas B. Croat 75170 (MO).
Panama Col—n: 100 m, 09.30N 79.39W, 6 April 1993, Thomas B. Croat 75190 (MO, SCZ, WU).
Panama Col—n: 500 m, 09.25N 79.40W, 17 September 1987, Gordon McPherson 11731 (MO).
Panama Col—n: 50 m, 9.35N 79.28W, 15 Jul 1987, Croat 67330 (MO).
Panama Col—n: 0 m, 9.30N 79.40W, 28 Aug. 1984, H.W. Churchill, A. Liese & H. Hernandez 6003 (MO).
Panama Col—n: < 100 m., 09.27N 79.40W, 19 June 1994, Thomas B. Croat & Guanghua Zhu 76222 (MO).
Panama Col—n: 30-100 m, 09.30N 79.30W, 22 September 1996, Thomas B. Croat 79343 (MO).
Panama Darien: 200-450 m, 07.58N 77.43W, 27 July 1994, Thomas B. Croat & Guanghua Zhu 77121 (MO).
Panama Darien: 100 m,, 14 Jan 1983, Garwood et al. 274 (BM).
Panama Darien: 200-50 m, 7.59N 78.25W, 25 Mar 1986, Barry Hammel, O. Franco, C. de Gaiza & J. Trainer 14887 (MO).
Panama Darien: Parque Nacional Darien, 150-300 m, 7.58N 78.23W, 22 May 1991, Hensold 1082 (MO).
Panama Darien: 0-80 m, 8.0N 77.48W, 1 July 1988, Thomas B. Croat 68985 (MO).
Panama Darien: 200 m, 7.58N 77.40W, 1 May 1990, R. C. Moran 5030 (MO).
Panama Darien: Parque Nacional del Darién, 20 m, 8.02N 77.42W, 5 Aug 1986, McDonagh , Lewis, Gumpel & Plumptre 426 (BM).
Panama Darien: Río Cocalito,, , Whitefoord & Eddy 100 (BM).
Panama Darien: Río Cocalito,, , Whitefoord & Eddy 99 (BM).
Panama Darien: Río Cocalito,, , Whitefoord & Eddy 283 (BM).
Panama Darien: Río Cocalito,, , Whitefoord & Eddy 135 (BM).
Panama Darien: Río Cocalito,, , Whitefoord & Eddy 284 (BM).
Panama Darien: Río Cocalito,, , Whitefoord & Eddy 286 (BM).
Panama Darien: Río Cocalito,, , Whitefoord & Eddy 285 (BM).
Panama Darien: Río Cocalito,, , Whitefoord & Eddy 130 (BM).
Panama Darien: 200 m, 8.01N 77.25W, 13 Oct 1987, B. Hammel G. de Nevers, H. Cuadros, & H. Herrera 16168 (MO).
Panama Darien: 600-800 m, 8.05N 77.16W, 25 Oct 1987, B. Hammel G. de Nevers, H. Cuadros & H. Herrera 16501 (MO).
Panama Panamá: 325-350 m,, 17 July 1987, Thomas B. Croat 67398 (MO).
Panama Panamá: 700-750 m, 9.15N 79.25W, 19 June 1988, Thomas B. Croat 68672 (MO).
Panama Panamá: 700 m, 8.53N 78.32W, 27 Jan. 1984, H.W. Churchill & G. de Nevers 4410 (MO).
Panama Panamá: 300 m, 8.55N 78.31W, 28 Jan. 1984, H.W. Churchill & G. de Nevers 4444 (MO).
Panama Panamá: 300 m, 8.55N 78.31W, 23 Jan. 1984, H.W. Churchill & G. de Nevers 4313 (MO).
Panama Panamá: 700 m, 8.53N 78.32W, 24 Jan. 1984, H.W. Churchill & G. de Nevers 4318 (MO).
Panama Panamá: 770 m, 09.15N 79.29W, 4 July 1994, Thomas B. Croat & Guanghua Zhu 76634 (CM, MO).
Panama San Blas: 310 m, 09.20N 79.00W, 20 July 1994, Thomas B. Croat & Guanghua Zhu 76991 (MO).
Panama San Blas: 350-400 m,, 10 May 1981, Sytsma & Andersson 4518 (MO).
Panama San Blas: 50-200 m, 09.13N 78.16W, 8 noviembre 1991, Heraclio Herrera, Jimmy Mojica y Johny Morris 1111 (MO).
Panama San Blas: 50 m, 9.24N 79.24W, 16 Dec. 1985, Greg de Nevers, H. Herrera & S. Charnley 6512 (MO).
Panama San Blas: 50-100 m, 09.13.5N 78.15W, 8 Junio 1994, Heraclio Herrera, L. Arosemena, J. Mojica y F. Chiari 1588 (MO, NY, PMA, SEL, STRI).