Anthurium hartmanii Croat & O. Ortiz, 2017

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 : 663-664

Anthurium hartmanii Croat & O. Ortiz ( Fig. 3G)

Material examined. Cerro Pirre, Rancho Carajo, Serrania del Pirre, PN Darién, Bosque ruboso; 07°57′11″N, 077 °42′15″W; 1261 m; 21 Apr. 2016; J. E. Batista 1607 ( MO, PMA). Cerro Pirre, collection from area around the camp at top of Pirre, near triangualtion marker; 07°52′00″N, 077°43′30″W; 1400 m; 10–20 Jul. 1977; J. P. Folsom 4348 ( MO). Ridgetop area N of Cerro Pirre, between Cerro Pirre top and Rancho Plastico; 07°51′N, 077°42′W; 1200–1400 m; 14 Nov. 1977; J. P. Folsom 6303 ( MO). Along path on ascending ridge to Cerro Pirre from Pijibasal, nearly vertical ascent from Rancho Frio to ridgetop grade running to Rancho Plastico; 07°51′N, 077°42′W; 600–1100 m; 30 Jun 1980; J. P. Folsom 8544 ( MO). Serranía de Pirre, trail ca 1 mi. N of Cerro Pirre, on main ridge; 07°56′N, 077°42′W; 1200 m; 14 Jul. 1977; R. L. Hartman 4596 ( 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 8566 ( MO). Parque Nacional Darién, camino a Cerro Cituro desde el Campamento de Cana; J. Polanco 2894 ( PMA). Parque Nacio- nal Darien, Cerro Pirre; 07°46′00″N, 077°44′06″W; 1600 m; May 1999; A. Zapata 1542 ( MO). Ibid.; 07°46′00″N, 077°44′06″W; 1400 m; 12 May 1999; A. Zapata 1588 ( MO). Ibid., Rancho Plástico; 07°58′57″ N, 077°42′30″ W; 1128 m; 18 Jul. 2016; O. O. Ortiz 2733 ( PMA).

Identification. In the revision of Anthurium of Panama (Croat 1986), A. erythrostachyum Croat was described, based on a collection (holotype) made in Alturas del Nique (extreme south of the Serranía de Pirre) and some collections (paratypes) of Cerro Pirre (extreme north of the Serrania de Pirre). Subsequently, Croat et al. (2017a) using the specimens of Cerro Pirre (previously determined as A. erythrostachyum ), described A. hartmanii Croat & O. Ortiz as a different species. This latter spe- cies occurs only at Alturas del Nique and is character- ized by its nomadic vine life form, elongated internodes, persistent intact cataphylls, terete petioles, blades with two to four pairs of basal veins, and three to four pairs of primary lateral veins, as well as its greenish white spathes and lavender spadices. In the field, this species is very similar to A. rubrifructum Croat , but this latter has thin and deciduous cataphylls, triangular-hastate blades and greenish reflexed spathes.

Distribution and ecology. Endemic to Panama. So far, it is known to be distributed only along the cloud for- ests located north of the Serranía de Pirre. Apparently, this species has preferences to relatively open sites with greater light intensity. Croat et al. (2017a) report that A. hartmanii presents terrestrial habit; however, the observations made in the field indicate that it has a nomadic vine life form. This species germinates in the soil and then climbs to the hosts (usually small trees), usually up to 2– 3 m.