Monographs Details: Randia formosa (Jacq.) K.Schum. var. formosa
Authority: Maguire, Bassett. 1972. The botany of the Guayana Highland--part IX. Mem. New York Bot. Gard. 23: 1-832.
Family:Rubiaceae
Description:Distribution and Ecology - Distribution. Colombia, Venezuela, Ecuador, Tobago, and Brazil (where intermediate specimens occur). COLOMBIA. Bolivar: vicinity of Cartagena, Bro. Heriberto 111, 224. San Martin de Loba and vicinity, Curran 180; Puerto Wilches, Sep 1917, Rusby 4804; Buena Vista, E of Since, alt 100-200 m, 24 Jan 1918, Pennell 3975; 150 km N of Barrancabermeja, 74° 4' W, 8° 15' N, Mico Ahumado Camp, alt 900 m, 18 Aug 1966, de Bruijn 1061. El Valle: Ibague, alt 700-800 m, 2 Aug 1952, Koie 5114. Magdalena: near La Jagua, alt 100 m, 22 Jul 1943, Haught 3564; Chimichagua, 30 km NE of El Banco, 10 Aug 1938, Haught 2233. ECUADOR. Daule prope Guayaquil, Spruce 6323; Guayaquil, marsh 8 km W of town, 4 Mar 1939, Asplund 5198. VENEZUELA. Bolívar: between Upata and El Manteco, alt 375 m, 8 Aug 1960, Steyermark 87019; between Río Caroni and Ciudad Bolívar, alt 200 m, 2 Aug 1944, Steyermark 57630. Guarico: carretera Calabozo-Cazorla, Río Orituco, 3 Nov 1958, Trujillo 3958. Barinas: along Río Paguey, 30 km S of Barinas, along road to San Cristobal, alt 350 m, 29 Jun 1966, de Bruijn 1061. Zulia: SE of Rosario, 13 May 1949, Curran 2 M-10; Hacienda Sabana Perdida, 20 km NE of Mene Grande, alt 100 m, 26 Jul 1966, de Bruijn 1016; Perijá, Plée 131; vicinity of Mene Grande, 31 Oct 1922, Pittier 10625; bifurcatión de la carretera Machiques-Colon y la carretera hacia San José, alt 50 m, 22 Aug 1967, Steyermark & Fernandez 99550; Perijá District, 5 km W of Machiques, Hacienda El Capitan, alt 150 m, 12 Oct 1966, de Bruijn 1157; cerca de Machiques, May 1961, Badillo 3725, 3727. Portuguesa: alrededores de Acarigua, Aug 1949, Cardona 4023. TOBAGO. Logwood Park, 24 Jun 1909, Broadway 2948.

Discussion:

Randia formosa (Jacquin) K. Schumann, Mart. Fl. Bras. 6(6): 342. 1889.

Type. Cartagena, Colombia, Jacquin.

Jacquin’s original description of Mussaenda formosa specifies a flower “quatuor vel sex pollices” [10-15 cm] long, and the size of the fruit illustrated in his plate 48 (Stirp. Am.) is one of small size (approximately 2.7 × 2.2 cm). Topotypical material examined from Cartagena, Colombia, has corollas 10-14.5 cm long (including lobes). This is also matched by the material cited above from Guayaquil, Ecuador, and some from Venezuela. In these specimens the corolla lobes are prominent, lanceolate, long-acuminate, and 3.2-4.5 × 0.6-1 cm (in pressed flattened condition), and the corolla tube is 6-10.5 cm long (varying on the same specimen from 6-8 cm). The leaves of the Colombian topotypes vary from glabrate to soft-pilose lower leaf surfaces, and with the lower midrib varying from sparsely to moderately strigillose, with 4-6 pairs of faint lateral nerves. The leaf blades are lanceolate- to ovate-elliptic, narrowed at both ends, but more attenuate toward the base, the larger leaves measuring 10-12.5 × 4-5 cm, smaller leaves measuring 2.5-4 × 1-1.5 cm. The petioles are 4-10 mm long with strigose to substrigose pubescence.

Distribution:Colombia South America| Venezuela South America| Ecuador South America| Trinidad and Tobago South America| Brazil South America|