Monographs Details: Tetrapollinia caerulescens (Aubl.) Maguire & B.M.Boom
Authority: Maguire, Bassett. 1989. The Botany of the Guayana Highland- Part XIII. Mem. New York Bot. Gard. XIII: 1-127.
Family:Gentianaceae
Description:Distribution and Ecology - Savannas and moist grassy places, of wide distribution, eastem Venezuela to central Brazil. Only Guayanan collections listed below. GUYANA. Herb, corolla white, rarely bluish; savanna, Wichabai, basin of Rupununi River, 25-26 Oct 1937, A. C Smith 2296 (NY); Kaieteur Plateau, 8 May 1944, Bassett Maguire & D. B. Fanshawe 23319 (NY); Imbaimadai Savannas, upper Mazamni River, 550 m alt, 21 Oct 1951, Maguire 32170-A (NY). SURINAM. Flowers blue; frequent, grass savanna, Zanderij II, 3 Jun 1944, Maguire 23682 (NY). BRAZIL, roraima: Annual with solitary lavenderblue flowers; marshy grass-ridge area, occasional, Serra Tepequem, 700-800 m ah., 2 Dec 1954, Maguire & Maguire 40119 (IAN, N Y , RB, US).

Discussion:

Type. French Guiana. Aublet (BM, not seen by us).

Lisianthus caerulescens Aublei, Hist. Pl. Guiane 1:207. t. 82. 1775.

Irlbachia caerulescens (Aublet) Grisebach, Gen. & Sp. Gentian. 195. 1838

Specimens examined. VENEZUELA, bolivar: Corolla lavender; sandy wet meadow. Gran Sabana between Mision Santa Teresita de Kavanayen N W to Rio Karuai, on large mesa, 1220 m alt., 26 Oct 1944, Steyermark 59353 (NY); herb, flowers blue-purple; frequent in moist savanna about 4 km east of Mision Santa Teresita de Kavanayen, 1300 m alt., 13 Dec 1952, Maguire & Wurdack 33789 (NY); corolla blue purple; in large savanna, vie. Uriman, 300 m, 30 Apr 1953, Steyermark 75299 (NY); flowers blue-purple; savanna 0.5 km N E and E of Uriman, 393 m alt., 8 Jan 1955, Steyermark & Wurdack 10 (NY); flores blancas; sabanas a orillas del Rio Hacha, region de Canaima, 200-500 m, 16-17 Feb 1964, Agostini 277 (NY); flowers light purple; in open sedge savanna, 2 km W of Kamarata, Gran Sabana, 450 m alt., 22 Feb 1967, Koyama & Agostini 7239 (NY).