Anthurium tilaranense Standl., J. Wash.
Acad. Sci. 17: 245. 1927. TYPE: Costa Rica. Guanacaste: Quebrada Serena, SE of Tilaran, 700 m, Jan. 1926, Standley & Valeria 46310 (US, holotype).
Anthurium latihastatum Engl. ex K. Krause, Notizbl. Bot. Gart. Berlin-Dahlem 11: 612. 1932. syntypes: Costa Rica. Near San Ram6n, 1,300-1,400 m. May 1913, Tonduz 17708 (not seen); 1,200 m, Tonduz 17704 (not seen).
Epiphyte; stems to 1 m long; cataphylls drying reddish brown, persisting intact; petioles (8-)16-45 cm long, 4÷6 mm diam.; blades subcoria-ceous, 3-lobed, 20-46 cm long, 10-60 cm wide. Inflorescence more or less erect; peduncle (7-)10-25(-30) cm long; spathe subcoriaceous, pale green, broadly lanceolate to oblong or oblong-elliptic, 5.5-11 cm long, 1.7-3 cm wide; spadix pale green to white, 4.5-14 cm long, ca. 8 mm diam. midway; berries red (at least apically), obovoid, ca. 7 mm long, 5 mm wide, obtuse at apex; seeds 2. See Croat (1983: 396) for a more complete description.
The species is known in Costa Rica and Panama from 400 to 1,500 m in premontane wet, tropical wet, and lower montane forest.
Anthurium tilaranense is a member of section Semaeophyllium but is not closely related to any other species in the section. It is distinguished by its deeply three-lobed leaf blade with the lateral lobes falcate, its persistent cataphylls, and its pale green to white spadix that is slightly tapered at both ends. In Panama, it has leaves similar to A. madisonianum, which has a longer, reddish spadix and prominently weathering cataphylls.
Map of Mesoamerican specimens with coordinates
Costa Rica Alajuela: 820 m, 10.20N 84.40W, 13 JUN 1986, William A. Haber ex
E. Bello C., B. Hammel & L.Lierheimer 5116 (MO).
Costa Rica Alajuela: 10.12.53N 84.36.28W, 2 mayo 1987, Gerardo Herrera Ch. 602
(MO).
Costa Rica Alajuela: 10.12.53N 84.36.28W, febrero 1987, Gerardo Herrera Ch.
507 (MO).
Costa Rica Alajuela: 500 m, 10.55N 85.20W, 28 October 1987, Gerardo Herrera
956 (MO).
Costa Rica Alajuela: 820 m, 10.20N 84.40W, 13 JUN 1986, William A. Haber ex
E. Bello C. B. Hammel & L.Lierheimer 5075 (MO).
Costa Rica Alajuela: 900 m, 10.18N 84.45W, 21 May 1987, William Haber &
Erick Bello 7167 (MO).
Costa Rica Alajuela: 900 m, 10.19N 84.44W, 23 July 1987, William Haber &
Erick Bello 7345 (MO).
Costa Rica Alajuela: 900 m, 10.18N 84.45W, 4 July 1988, Erick Bello 122 (MO).
Costa Rica Alajuela: 1560 m,, 3 Feb 1979, Thomas B. Croat 46922 (MO).
Costa Rica Alajuela: 300 m,, 5 Feb. 1976, Utley & Utley 4039 (MO).
Costa Rica Alajuela: 400 m,, 24 June 1976, Thomas B. Croat 36257 (MO).
Costa Rica Alajuela: 400 m,, 24 June 1976, Thomas B. Croat 36318 (MO).
Costa Rica Alajuela:, 25 Jan. 1986, Christenson 1109 (MO).
Costa Rica Cartago: 1135 m, 09.49.00N 83.24.30W, 2 March 1990, Michael Grayum
& Don Hodel 9726 (MO).
Costa Rica Cartago: 1250 m,, 1 July 1976, Thomas B. Croat 36685 (MO).
Costa Rica Cartago: 650 m,, 1979, Bogner s.n. (MO).
Costa Rica Guanacaste: 450 m, 10.40.00N 84.04.30W, 25 January 1985, Michael
Grayum, G. Herrera, O. Segura & P. Sleeper 4879 (B, CR, K, MO, US).
Costa Rica Guanacaste: 850 m, 10.48N 85.19W, 14 August 1987, Gerardo Herrera
707 (MO).
Costa Rica Guanacaste: 1100 m, 10.55N 85.28W, 15 July 1989, III INBio 53 (MO).
Costa Rica Guanacaste: 600 m, 10.45N 85.18W, 8 March 1988, Gerardo Herrera 1614
(MO).
Costa Rica Guanacaste: 800 m, 10.48N 85.19W, 13 October 1987, Gerardo Herrera
853 (MO).
Costa Rica Guanacaste: 1200 m, 10.23N 84.53W, 18 JUN 1986, William A. Haber
ex Eric Bello C. & April Clagget 5276 (MO).
Costa Rica Guanacaste: 1100 m, 10.23N 84.51W, 23 November 1987, William Haber
& Erick Bello 7820 (MO).
Costa Rica Guanacaste: 1100 m, 10.47.40N 85.18.35W, 1 October 1990, Gerardo
Rivera 683 (MO).
Costa Rica Guanacaste: Parque Nacional Ríncon de la Vieja, 900-1200 m, 10.47N
85.18W, 27-28 Jan 1983, Davidse et al. 23334 (MO).
Costa Rica Guanacaste:, , Standley & Valerio 45586 (US). Costa Rica Guanacaste:
Volcán Miravalles,, , Luteyn 3409 (DUKE).
Costa Rica Heredia: P.N. Braulio Carrillo, 500 m, 10.19.45N 84.04.50W, 26 January
1990, Abelardo Chacón 688 (CR, MO).
Costa Rica Heredia: 480-520 m, 10.18.30N 84.04.00W, 8 April 1986, Michael H.
Grayum 6916 (MO).
Costa Rica Heredia:, , Skutch 3735 (MICH). Costa Rica Lim—n: Río Toro
Amarillo, 275 m,, 9 Jan 1984, Thompson & Rawlins 1219 (MO).
Costa Rica Lim—n: Cordillera de Talamanca, 1000 m, 09.47.00N 83.20.30W, 10 Aug
1995, Grayum 10830 (CR, INB, MO).
Costa Rica Puntarenas: Monteverde,, , Jimenez s.n. (MO).
Costa Rica Puntarenas:, 26 July 1979, Jimenez 106 (MO).
Costa Rica San José: Alto Pacuare,, 21 July 1978, Ocampo, S. 2361 (MO).
Panama Bocas del Toro: 350-500 m, 8.54N 82.10W, 10 Mar 1986, Barry Hammel, G.
McPherson & L. Sanders 14720 (MO).
Panama Bocas del Toro: 600 m, 8.45N 82.18W, 25 June 1987, Croat 66786 (MO).
Panama Bocas del Toro: 3000 - 4000 f,, 21 June 1986, Kress et al. 86-1950 (MO).
Panama Chiriquí: Cerro Colorado, 1200-1500 m,, 14 Mar. 1976, Thomas B. Croat
33365 (MO).
Panama CoclŽ: 800-900 m, 8.38N 80.09W, 12 July 1987, Thomas B. Croat 67201 (MO).
Panama CoclŽ: La Mesa, 860-900 m,, 21 July 1976, Thomas B. Croat 37354 (MO).
Panama CoclŽ: La Mesa,, , Wilbur et al. 15663 (DUKE).
Panama Panamá: 1000 m,, 16 June 1979, António 1086 (MO).
Panama Veraguas: Santa Fe Region,, 17 Oct. 1974, Mori & Kallunki 2589 (MO).
Panama Veraguas: Santa Fe Region,, 13 Apr. 1974, Nee 11226 (MO).
Panama Veraguas: Santa Fe Region, 800 m,, 7 Oct. 1979, António 2036 (MO).
