Anthurium hoffmannii Schott,

Oesterr. Bot. Z. 8: 181. 1858. TYPE: Costa Rica. San Jos6: Chica Uruca, Hoffmann 571 (B, type destroyed; Photo of Schott Aroid Drawing #662; NYBG Neg. #N.S.3897).

Epiphytic or terrestrial; stems to 60 cm or longer, cataphylls drying reddish brown, persisting intact; leaves with petiole erect-spreading, 20-90 cm long, 4-8 mm diam., terete or weakly sulcate; blades ovate, moderately thick, 14-55 cm long, 9-38 cm wide, deeply lobed at base. Inflorescence erect to slightly arching, peduncle 16-50 cm long, 1-4 mm diam., terete; spathe pale yellow-green, subcoriaceous, oblong-ovate to lanceolate, 6-13 cm long, 1.7-3 cm wide, stipe 6-10 mm long; spadix pale green becoming white or cream-colored, 4.5-8.5 cm long, ca. 8 mm diam. at middle; berries red, ovoid, ca. 8 mm long, ca. 5 mm wide; seeds 2. See Croat (1983: 302) for a more complete description.

Anthurium hoffmannii is found in Panama at 750 to 1,500 m in tropical wet, premontane rain, and lower montane rain forest life zones. It occurs in Code, Chiriquí, Col—n, and Veraguas Provinces.

The species is in section Calomystrium and is related to A. obtusilobum and A.formosum. Anthurium obtusilobum differs in having the collective vein arising from the lowermost basal vein and continuing to the apex of the blade. Anthurium formosum differs in having a broader spathe that is whitish to pale violet. Anthurium hoffmannii is recognized by its thick, ovate to oblong-ovate, prominently lobed blade, its thick persistent reddish brown cataphylls, and by its pale green spathe and spadix.

 Map of Mesoamerican specimens with coordinates

Costa Rica Alajuela: 850 m, 10.18N 84.44W, 2 November 1989, Erick Bello 1426 (MO).
Costa Rica Guanacaste: 1540 m, 10.21N 84.48W, 20 August 1988, William Haber & Willow Zuchowski 8618 (MO).
Costa Rica Lim—n: 850 m, 9.47.50N 83.05.30W, 5 April 1989, Gerardo Herrera Pastor Sanabria & Manuel Solís 2512 (MO).
Costa Rica Lim—n: P.N. Cordillera de Talamanca; Cordillera de Talamanca, 1300 m, 09.24.15N 83.05.15W, 7 March 1992, Gerardo Herrera 5215 (CR, INB).
Costa Rica Lim—n: 400 m, 09.54N 083.12W, 20 Feb. 1995, Rodriguez, A. 551 (INB, MO).
Costa Rica Puntarenas: 100-300 m, 08.41N 83.33W, 8 Oct 1984, Michael Grayum 4109 (MO).
Costa Rica Puntarenas: 1200 m, 8.49N 82.58W, 6-7 March 1984, Thomas B. Croat 57273 (MO).
Costa Rica Puntarenas: 40 m, 8.41N 83.31W, 2 March 1985, T.B. Croat & M.H. Grayum 59740 (MO).
Costa Rica Puntarenas: 1200 m, 08.54.40N 82.47.10W, 25 September 1990, Marvin Ramírez en el curso II de Parataxónomos 214 (MO).
Costa Rica Puntarenas: 1500 m, 10.18N 84.48W, 13 June 1987, William Haber & Erick Bello 7501 (MO).
Costa Rica Puntarenas: R.F. Golfo Dulce; Península de Osa, 400 m, 08.38.45N 83.35.25W, 21 July 1990, Gerardo Herrera 3994 (CR, MO).
Costa Rica Puntarenas: R.I. Ujarrás; Cordillera de Talamanca, 1500 m, 09.17.50N 83.15.30W, 10 March 1993, Gerardo Herrera 5844 (CR).
Costa Rica Puntarenas: Wilson Botanical Garden, 1250 m,, 4 July 1994, Kress & Prinzie 94-4567 (MO).
Costa Rica Puntarenas: P.I. La Amistad, 1250-1300 m, 09.01.35N 83.00.45W, 9 Apr 1996, Villalobos 298 (CR, INB, MO).
Costa Rica San José: 1200-1300 m, 09.26.30N 83.43.00W, 19 August 1990, Michael Grayum, Helen Kennedy & Noriaki Murakami 9946 (MO).
Costa Rica San José: 1750 m, 09.28.40N 83.41.25W, 27 November 1990, Barry Hammel 17976 (MO).
Costa Rica San José: 730 m,, , Skutch 3076 (GH, MO).
Costa Rica San José: Fila Bustamante, 900-1000 m, 09.42.57N 84.17.02W, 24 June 1995, J.F. Morales 4469 (CR).
Costa Rica San José: 1100-1200 m, 09.33.30N 84.03.15W, 5 September 1996, Thomas B. Croat 78899 (INB, MO, WU).
Costa Rica San José: 1500 m, 09.27.32N 83.42.40W, 9 September 1996, Thomas B. Croat & Dylan Hannon 79097 (INB, MO).
Costa Rica San José: 990-1100 m, 09.18.24N 83.46.11W, 9 September 1996, Thomas B. Croat & Dylan Hannon 79109 (INB, MO).
Costa Rica San José: 1000 m, 09.18N 083.46W, 21 Feb. 1977, W. Burger & G. Visconti 106 (MO).
Panama Bocas del Toro: 590 m, 8.46N 82.14W, 10 March 1985, T.B. Croat & M.H. Grayum 60201 (MO).
Panama Bocas del Toro: 1000 m, 8.45N 82.15W, 8 Dec 1985, Gordon McPherson 7861 (MO).
Panama Bocas del Toro: Fortuna Dam Area, 1000 m, 8.48N 82.12W, 5 Feb 1984, Churchill et. al 4643 (PAN).
Panama Bocas del Toro: 1000 m, 8.48N 82.12W, 5 Feb. 1984, H.W. Churchill, G. de Nevers & H. Stockwell 4643 (MO).
Panama Chiriquí: 1400 m, 8.47N 82.40W, 23 August 1982, Clem Hamilton, H. Stockwell & A. Aiello 916 (MO).
Panama Chiriquí: 1200-1400 m, 8.50N 82.43W, 17 March 1983, C. Hamilton & H. Stockwell 3484 (MO).
Panama Chiriquí: 1600 m, 8.49N 82.38W, 15 June 1987, Thomas B. Croat 66203 (MO).
Panama Chiriquí: 800 m, 08.53N 82.35W, 28 March 1993, Thomas B. Croat 74887 (MO).
Panama Chiriquí: 1575 m, 08.31N 81.46W, 30 March 1993, Thomas B. Croat 75017 (MO).
Panama Chiriquí:, 8 December 1997, D.W. Roubik & L. Quroz 1307 .
Panama CoclŽ: 89.39N 80.36W, 23 June 1988, Thomas B. Croat 68783 (MO).
Panama CoclŽ: 89.39N 80.36W, 23 June 1988, Thomas B. Croat 68846 (MO).