Monographs Details: Irlbachia cardonae (Gleason) Maguire
Authority: Maguire, Bassett. 1978. The botany of the Guayana Highland--part XI. Mem. New York Bot. Gard. 32: 1-391.
Family:Gentianaceae
Description:Distribution and Ecology - Distribution. Rocky exposed places and savannas, middle and upper altitudes, chiefly Gran Sabana, Venezuela, and Pakaraima Plateau, Guyana. VENEZUELA. Estado Bolivar: 1100 M, Auyan-tepui, Dec 1937, Tate 1360 (paratype NY); 1850 m, Auyan-tepui, Jan 1938, Tate 1359 (holotype NY, photo NY); summit Cerro Tonoro, 700 m, Alto Río Paragua, 2-15 Aug 1943, Cardona 853 (NY); corolla deep lavender to purple, Ptari-tepuí at 1800 m, 29 Oct 1944, Steyermark 59507 (F, NY, VEN); mossy rocks bordering stream, 3 km northeast of Kavanayen, 1220 m, 24 Nov 1944, Steyermark 60498 (F, NY, VEN); herb 60 cm high, flowers blue, Cerro Uaipan, Río Caroní, 26 Nov 1946, Cardona 2079; very common, flowers lavender-purple, prefers wet spots, cumbre Uaipan-tepuí, 1900 m, 1-15 Feb 1948, Phelps & Hitchcock 372 (NY, VEN); annual, blue flowers. North Valley, 1600-1700 m, Cerro Guaiquinima, Río Paragua, 10-12 Jan 1952, Maguire 33073 (NY); annual 2-5 dm high, with blue flowers, frequent in open savanna. Mesa Grande, Ilu-tepuí, 4800 ft, 12 Mar 1952, Maguire 33351 (NY, V EN, US); frequent herb with blue flowers, savanna margin, 1500 m, Ptari-tepui, 17 Dec 1952, Maguire & Wurdack 33917 (NY, VEN, US); corolla rich purple, common in open ground around sandstone outcrops, 2100-2300 m, 13 Apr 1953, Chimanta Massif, Steyermark 74909 (NY, US, VEN); 2000 m, 19 Jan 1953, Steyermark 75730 (NY, VEN, US); Uriman at 400 m, 11 Jan 1955, Steyermark & Wurdack 67 (unicate NY); Chimanta Massk, 1900 m, 2 Feb 1955, Steyermark & Wurdack 345 (NY, VEN); wooded ridge, Fila de la Danta, Km 127, Venamo Road, 1200 m, 15 Apr 1960, Steyermark & Nilsson 227 (NY, S, VEN); Km 150, 24-25 Apr 1960, Steyermark & Nilsson 576 (NY, S, VEN); Cerro Venamo, 1400- 1500 m, 1 Jan 1964, Steyermark, Dunsterville & Dunsterville 92533 (NY, VEN); Auyan-tepuí, 1650 m, 12 May 1964, Steyermark 93769 (NY, VEN); cumbre, Cerro Jaua, Rio Kanarakuni, Río Caura, 1900-2100 m, 22-27 Mar 1967, Steyermark 97961 (NY, VEN). GUYANA. Upper Mazaruni Basin, Pakaraima Plateau: herb to 1 m, corolla purplish-blue, throat and midrib within striped white, Haieka Savanna, Ayanganna Plateau, 2 mi E Chinowieng Village, 740 m, 22 Aug 1960, Tillett, Boyan & Tillett 45251 (NY, K, US); corolla blue, stamens white, infrequent on rocky outcrop, scrub surrounding Stegolepis bog, top Eboropu, 900 m, Kamarang River, 13 Oct 1960, Tillet & Tillett 45650 (K, NY).

Discussion:10. Irlbachia cardonae (Gleason) Maguire, comb nov Fig 85AA-MM, 87A. Chelonanthus cardonae Gleason, Brittonia 3: 189. 1929. Lisianthus cardonae (Gleason) Steyermark, Fieldiana Bot. 28: 498. 1953. Lisianthus acutilobus Steyermark, Bol. Soc. Venez. Cienc. Nat. 26: 439, Fig 9. 1966. Type. Sandy alluvium, Río Aponguao, Km 146, between Luepa and Cerro Venamo, 1220 m alt, Estado Bolivar, Venezuela, Apr 1960, J. A. Steyermark & S. Nilsson 732 (holotype VEN, isotype NY, S). Type. Auyan-tepui, 1850 m alt, Estado Bolivar, Venezuela, Jan 1938, G. H. H. Tate 1359 (holotype NY, photo NY). Name excluded: Irlbachia caerulescens (Aublet) Grisebach.
Distribution:Guyana South America| Venezuela South America|