Monographs Details: Geophila cordifolia Miq. var. cordifolia
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. Guianas, Venezuelan Guayana, Brazil, Colombia. FRENCH GUIANA. Tonate, 26 Sep 1962, Halle 473. SURINAME. Hostmann 58 (syntype of Geophila cordifolia Miq.); headwaters of Mapane River, about 150 mi S of Paramaribo, 1954, Guppy & Lindeman s n; Nassau Mountains, Marowijne River, on ferrite in forest on Expedition Line, Plateau A, alt 520 m, 1 Mar 1955, Maguire 40728; above village of Jacob kondre, Saramacca River headwaters, 18 Jun 1944, Maguire 23870 A; 2 km above confluence with Lucie Rivier, Zuid Rivier, 3° 20' N, 56° 49' W-3° 10' N, 56° 29' W, Wilhelmina Gebergte, 19 Sep 1963, Irwin, Prance, Soderstrom & Holmgren 55872. BRITISH GUIANA. Kumaka, Kusutung River, Sep 1925, A. C. Smith 423; Essequibo River, Moraballi Creek, near Bartica, alt near sea level, 28 Aug 1929, Sandwith 144; behind mission, Kanasenay, alt 105 m, 21 Sep 1952, Guppy 191 (Record no. 7167); Tumatumari, 18 Jun-8 Jul 1921, Gleason 2, 92, 436; along the Berbice-Rupununi Cattle trail, 17 E, Demerara County, 28 Jun 1920, Abraham 321; along the Berbice-Rupununi Cattle trail, Berbice or Demerara County, 1919, Abraham 235. BRAZIL. Amazonas: in vicinibus Barra, Prov. Rio Negro, Dec-Mar 1850-51, Spruce s n (type collection of Mapouria trichogyne Muell.-Arg.); region mision Maturaca a orrilas del caño del mismo nombre a 8 km sur del Salto Hua, alt 90 m, 1 Apr 1964, Ewel 73; 8 km NE of Porto Velho, basin of Rio Madeira, 7 Nov 1968, Prance, Rodrigues, Ramos & Farias 8244. Pará: Belém-Brasilia highway, Km 32, 27 Aug 1964, Prance & Silva 58909; vicinity of Cachoeira, Km 96, Capoeira, road BR 22, Capanema to Maranhao, 26 Oct 1965, Prance & Pennington 1683. Amapá: Rio Oiapoque, 5 km SE of Clevelandia, 3° 48' N, 51° 53' W, 7 Aug 1960, Irwin, Pires & Westra 47397. Rondonia: Km 90-93, Madeira-Mamoré railroad, near Jaciparana, 30 Jun 1968, Prance, Philcox, Forero, Coelho, Ramos & Farias 5407; vicinity of Santa Barbara, 15 km E of Km 117, Porto Velho to Cuiaba highway, 14 Aug 1968, Prance & Ramos 6957. Mato Grosso: source of the Jatuaraha River, Machado River region, Dec 1931, Krukoff 1670 in part. VENEZUELA. Bolívar: orillas del Río Tonoro, Alto Paragua, 2-15 Aug 1943, Cardona 810; wooded slopes of Quebrada O-paru-má, between Santa Teresita de Kavanayen and Río Pacairao (tributary of Río Mouak), alt 1065-1220 m, 20-21 Nov 1944, Steyermark 60402. Amazonas: Culebra savanna, Río Cunucunuma, Río Orinoco, 23 Dec 1950, alt 200 m, Maguire, Cowan & Wurdack 30372; near Base Camp, Cerro Sipapo (Paráque), alt 125 m, 30 Dec 1948, Maguire & Politi 28049; between Sabana Grande and southeastern base of Cerro Duida, alt 200 m, 23 Aug 1944, Steyermark 57892; Middle Camp, Esmeralda, alt 98 m, 10 Nov 1928, Tate 1006; El Cucuy, Río Negro, alt 100 m, 8 Mar 1942, Williams 14715. COLOMBIA. Cundinamarca: Buena Vista, Gazaguan Valley, 6 km W of Medina, alt 800 m, Grant 10424. Amazonas-Vaupes: Rio Apaporis, entre el Río Pacoa y el Río Kananari; alt 250 m, Schultes & Cabrera 13713.

Discussion:

Geophila cordifolia Miq., Stirp. Surin. Sel. 176. 1850.

Lectotype. In montibus in regionibus interioribus ad flumen Suriname, Suriname, Apr 1846, Kappler 1896.

I am taking the specimen of Kappler 1896 in U as lectotype, and that of Hostmann 58 in U as paratype. Mapouria trichogyne Muell.-Arg., described from the Upper Amazonas of Brazil (near Manaos on the Rio Negro), and collected by Spruce s n, proves to be conspecific with Geophila cordifolia Miq. of Suriname. Müll.-Argoviensis attempted to differentiate his M. trichogyne from Geophila cordifolia on the basis of supposed differences in shape and apex of stipules, more numerously flowered inflorescences in G. cordifolia, and proportionate length of calyx lobes to calyx tube. These differences, however, have been found as unreliable, and only one species can be recognized.

Geophila cordifolia may be distinguished vegetatively from G. tenuis (Muell.-Arg.) Standi, and G. gracilis (R. & P.) DC. by the pubescent lower leaf surface, the consistently pubescent midrib of the upper side of the leaf (in G. gracilis it is not pubescent, and in G. tenuis it may or may not be), and by the densely villous peduncles (sometimes pilose in G. tenuis).

Distribution:Guyana South America| Venezuela South America| Brazil South America| Colombia South America| French Guiana South America| Suriname South America|