Monographs Details: Rudgea cornifolia (Kunth) Standl.
Authority: Maguire, Bassett. 1967. The botany of the Guayana Highland--Part VII. Mem. New York Bot. Gard. 17: 1-439.
Family:Rubiaceae
Description:Distribution and Ecology - VENEZUELA. Delta Amacuro: Sacupana, Rusby & Squires 97; Bolivar: at river edges 1-10 km above mouth, Rio Pargueni, Middle Orinoco, alt 90 m, Wurdack &Monachino 39776; en los rebalsas de Guayapo, Bajo Caura, alt 100 m, Williams 11989; cerro de Piedras. en El Carmen, Velez 2532; Amazonas: in umbrosis Maypure, Orinoco, Humboldt & Bonpland 893 (type of Psychotria cornifolia at P); en la margen arboreada y anegada del Capihuara, Alto Casi-quiare, alt 120 m, Williams 15711; margen del riachuelo El Bagre. Puerto Ayacucho, alt 100 m, Williams 13030; San Antonio de Orinoco, alt ca 100 m, Holt A Gehriger 249: margen forestada del Orinoco, Cano Pava arriba de Tamatama, alt 121 m, Williams 15261. COLOMBIA: Vaupes: Riberas del Rio Inirida (long. 70°30'W), alrededores del sitio llamado “Morichar cerca de la boca del Rio Papunaua, alt 200 m, Fernandez 2318; Vichada: Selvas densas en suelos areillos y ricos a orillas del Rio Guaviare en la region de Amanabel (a bocas del rio), alt 950 m Molina A Barkley 18. VI. 123. BRAZIL. Amapa: lower slopes and base of Mt Tipac, Rio Oiapoque, 3°36'N, 51°19'W, alt 0-100 m, Irwin 48751; upland forest, vicinity Camp 12, 1°11'N—52°8''W, Rio Araguari, Pires, Rodrigues & Irvine 51382; along Rio Araguari, Camp 13, 1°45'N-25°W, Pires, Rodrigues & Irvine 51611; along Rio Araguari between Camps 6 and 7, 1°9'N-51°52'W and 1°2'N-51°45'W. Pires, Rodrigues & Irvine 50883; Amazonas: Secus Rio Negro, inter Barra et Barcellos, Spruce 1998; sylvis ad Porto das Miranhas et Manaiarii, Rio Negro in itione Japurensi, Martins 3007 (photo of type of Rudgea micrantha from M at F).

Discussion:

Psychotria cornifolia Humb. Bonpl. ex R. & S., Syst. Veg. 5: 191. 1819; H.B.K., Nov. Gen. & Sp. 3: 362. 1819.

Rudgea micrantha Mull.-Arg.. Flora 59: 454. 1876,

Rudgea fimbriata (Benth.) Standley in Standley & Calderon, Lista Prelim. PI. El Salvador. 274. 1925.

Psychotria fimbriata Benth.. Jour. Bot. Hook. 3: 226. 1841.

Type. Near Maipures, on the Orinoco, Venezuela, Humboldt A Bonpland 893.

The specimens cited agree with the original descriptions and type collections upon which Psychotria cornifolia was based, and include calyx and hypanthia which vary from 1.5-3 mm long and from puberulent to glabrate, with peduncles 10-35 mm long, corollas 5-7 mm long and puberulent to glabrous without.

Specimens from Ecuador, Peru, Bolivia, and some parts of Colombia and Brazil, which have been identified as Rudgea fimbriata or R. cornifolia, are distinct from specimens identified in the present treatment, and have larger corollas, larger, sometimes verrucose fruits, smaller inflorescences and calyces, and sometimes cinereous outer surfaces of the corolla. They are not included here. Furthermore, the material from Central America, Mexico, and the West Indies, belongs to a taxon other than R. cornifolia, and, likewise, are not treated.

Distribution:Venezuela South America| Colombia South America|