Monographs Details: Remijia tenuiflora Benth.
Authority: Maguire, Bassett. 1972. The botany of the Guayana Highland--part IX. Mem. New York Bot. Gard. 23: 1-832.
Description:Distribution and Ecology - Distribution. Amazonian Brazil. BRAZIL. Amazonas: secus Rio Negro, inter Barra et Barcellos, Nov 1851, Spruce 2085 (cited as 2079 by Schumann in Mart. Fl. Bras.); Manaos, Rio Tarumá ad ripas periodice inundatas, 18 Dec 1940, Ducke 654; bank of Rio Negro, basin of Rio Negro, 22 Sep 1941, Froes 12227; Rio Negro bei ponta Negra unweit Manaus, alt 150 m, 18 Dec 1964, Vogel 325.
Ladenbergia tenuiflora Klotzsch in Hayne, Arzneigew. 14: adnot. sub. t. 15. 1846.
Type. Barcellos on the Rio Negro, Amazonas, Brazil, Schomburgk 952.
Remijia tenuiflora is similar to R. densiflora Benth., but has longer corollas, somewhat thinner leaves, more interrupted and fewer-flowered inflorescences, and smaller stipules. The calyx lobes are glabrous within, lanceolate or ovate-lanceolate, acute to long acuminate, and 1.8-3 mm long. The corolla varies from 16-20' mm long as contrasted with 7.5-15 mm for R. densiflora.
Schumann [Mart. FI. Bras. 6(6): 153. 1889] cited the Schomburgk 952 collection as “prope Berbice” in British Guiana, but Bentham describes the collection as coming from “Barcellos on the Rio Negro,” and this data is so written on the type collection I have examined. Moreover, the other collections cited above all come from the Rio Negro region and agree with the Schomburgk specimen examined.
Distribution:Brazil South America