Synopsis of aroids (Alismatales, Araceae) from Cerro Pirre (Darién Province, Panama) Author Ortiz, Orlando Oriel Author de Stapf, María Sánchez Author Baldini, Riccardo Maria Author Croat, Thomas Bernard text Check List 2019 2019-08-16 15 4 651 689 http://dx.doi.org/10.15560/15.4.651 journal article 10.15560/15.4.651 1809-127X Anthurium niqueanum Croat ( Fig. 4A, B ) Material examined. Cerro Pirre, Rancho Carajo, Serranía del Pirre, PN Darién , bosque nuboso; 07°58′59″N , 077°42′29″W ; 1118 m ; 21 Apr. 2016 ; J . E . Batista 1579 ( PMA ). Ibid.; 07°59′21″N , 077°42′26″W ; 1118 m ; 22 Apr. 2016 ; J . E . Batista 1616 ( PMA ). Middle slopes on W side of Cerro Pirre; 07°56′N , 077°45′W ; 800–1050 m ; 29 Jun. 1988 ; T . B . Croat 68950 ( MO ). Cerro Pirre, ridge top near Rancho Plastico; 07°57′N , 077°42′W ; 1200 m ; 10–20 Jul. 1977 ; J . P . Folsom 4303 ( MO ). Serranía de Pirre, N end of range, 2–3 mi. N of Cerro Pirre; 07°56′N , 077°42′W ; 1000–1100 m ; 29 Dec. 1978 ; R . L . Hartman 8495 ( MO ). Parque Nacional Darién , caminando entre Campamento Rancho Frío No. 2 hacia la cima de Cerro Pirre; 08°00′N , 077°45′W ; 700–1000 m ; 7 Feb 1991 ; H . Herrera 877 ( MO ). Ibid., Cerro Pirre; 07°46′N , 077°44′W , 1400 m , A . Zapata 1587 ( PMA ). Ibid., Serranía de Pirre, Rancho Plástico; 07°59′13″N , 077°42′28″W ; 1127 m ; O . O . Ortiz 2642 ( MO , PMA ). Identification. This species is distinguished by its nomadic vine life form, elongated internodes, bullate blades, triangular or ovate-triangular with prominent veins on the lower dried surface. Croat (1986b) reports that this species has greenish spadices and unknown berries color; however, according to the observations in the field, this species has reddish spadices with promi- nent yellowish stamens at anthesis and whitish berries that turn red when they are mature. Anthurium niqueanum can be confused with juvenile individuals of A. dukei Croat , but the latter species is vegetatively differ- entiated by having very short internodes and markedly ribbed petioles. Distribution and ecology. Anthurium niqueanum , known only from the Serranía de Pirre (endemic to Pan- ama), occurs in montane cloud forests, above 1100 m . This species usually grows on shrubs or small trees, up to 5 m . It is common to observe several seedlings and juvenile individuals along the forest floor.