Anthurium cerropirrense Croat

Ortiz, Orlando Oriel, de Stapf, María Sánchez, Baldini, Riccardo Maria & Croat, Thomas Bernard, 2019, Synopsis of aroids (Alismatales, Araceae) from Cerro Pirre (Darién Province, Panama), Check List 15 (4), pp. 651-689 : 660

Anthurium cerropirrense Croat ( Fig. 3A, B)

Material examined. Cerro Pirre, Rancho Carajo hacia Cima, Serranía del Pirre, PN Darién, Bosque nuboso; 07°59′21″N, 077°42′26″W; 1129 m; 22 Apr. 2016; J. E. Batista 1614 ( MO, PMA). Cerro Pirre; 07°52′N, 077°44′W; 11 Apr. 1967; N. Bristan 619 ( MO). Along steep narrow ridge from Alturas de Nique to Cerro Pirre, ca 9–10 km due N of Alturas de Nique, ca 8 km W of Cana gold mine, virgin cloud forest, lower montane rain forest (Holdrige Life Zone System); 07°49′N, 077°43′ W; 1520–1560 m; 27 Jul. 1976; T. B. Croat 37857 ( MO). Middle slopes on W side of Cerro Pirre; 07°56′N, 077°45′W; 800–1050 m; 29 Jun. 1988; T. B. Croat 68948 ( MO). Ibid.; 07°56′ N, 077°45′ W; 800–1050 m; T. B. Croat 68949 ( MO). Cerro Pirre, cloud forest and/or mossy forest; 07°50′N, 077°44′W; 9–10 Aug. 1967; J. A. Duke E 13822 ( MO). Ibid.; 07°51′N, 077°44′W; Oct. 1962; J. A. Duke 6094 ( MO). Valley between between Pirre and next most southernly peak, sloping hillside; 07°40′N, 077°42′W; 1250–1300 m; 10–20 Jul. 1977; J. P. Folsom 4421 ( MO). Ibid.; J. P. Folsom 4504 ( MO). Serranía de Pirre, vicinity of Cerro Pirre; 07°52′N, 077°46′W; 1300–1500 m; 2 Jan. 1979; R. L. Hartman 8553 ( MO). Ibid., on trail immediately SE of summit; 07°52′N, 077°48′W; 1400 m; 14 Jul. 1977; R. L. Hartman 4587 ( MO). Ibid., trail ca 1 mi. SSW of Cerro Pirre summit; 07°56′ N, 077°42′ W; 1200 m; 15 Jul. 1977; R. L. Hartman 4688 ( MO). Ibid., on main ridge from intersection of trail down to Rancho Frío to 1 mi. S of that point, mossy cloud forest; 08°01′N, 077°43′W; 900–1000 m; 12 Jul. 1977; R. L. Hartman 4533 ( MO). Ibid., 1.5–2.5 mi. S on ridge from intersection with trail down to Rancho Frío, cloud forest; 07°57′N, 077°43′W; 900–1000 m; 11 Jul. 1977; R. L. Hartman 4477 ( MO). Ibid., main ridge 1–2 mi. N of Cerro Pirre; 07°56′N, 077°42′W; 1100–1200 m; 8 Jan. 1979; R. L. Hartman 8604 ( MO). Ibid., steep SE slope of Cerro Pirre, along newly cut trail to Boca de Cupe, within 500 altitudinal feet of summit, cloud forest; 07°56′N, 077°42′W; 1200 m; 3 Jan. 1979; R. L. Hartman 8567 ( MO). Ibid., wet forest; 07°56′N, 077°42′W; 1000–1080 m; 14 Sept. 1989; G. McPherson 14085 ( MO). Ibid., Rancho Plástico; 07°58′07″N, 077°42′26″W; 1208 m; 1 Aug. 2016; O. O. Ortiz 2661 ( MO, PMA). Ibid.; 07°58′57″ N, 077°42′30″ W; 1128 m; 18 Jul. 2016; O. O. Ortiz 2731 ( MO, PMA).

Identification. Anthurium cerropirrense is distinguished by having an elongated stem with short internodes, deciduous semi-intact cataphylls, narrowly elliptical to lanceolate blades with collective veins that emerge from one of the primary lateral veins, red-purple spadices, and elongated lilac berries. Croat (1986b) reported greenish spadices, but this species really has red-purple spadices at anthesis. At the study area, A. cerropirrense may be confused with A. talamancae Engl. , but the latter species differs in having wider blades, cordate to subcordate at the base and three to four pairs of basal veins.

Distribution and ecology. This endemic species is found only in the cloud forests that are above 1100 m. It usually grows in the lower strata of the host trees, between 3 and 4 m above the forest floor. It is a rare species and can be seen sporadically along the edge of the mountain range.