Monographs Details: Hieronyma oblonga (Tul.) Müll.Arg.
Authority: Maguire, Bassett. 1967. The botany of the Guayana Highland--Part VII. Mem. New York Bot. Gard. 17: 1-439.
Family:Euphorbiaceae
Description:Distribution and Ecology - A high altitude 650-2000 m element, British Guiana; Bolivar, Venezuela; Upper Amazonas, Brazil; and foothills of the Andes in Peru. BRITISH GUIANA. Mazaruni River, Jun 1889, Jenman 5274 (male NY) Essequibo River; Morabelli creek, near Bartica, near sea level, 11 Nov 1929, Sandwith 593 (male NY)Makauria creek, 23 Jul 1940, Forest Dept. F 521, R 3257 (female NY) YENEZUELA. Bolivar: Cerro Apacara, Rio Caroni, alt 1850 m, 11 Nov 1946, Cardona 1954 (2 NY); Mt. Roraima, near Rondon Camp, alt 2040-2255 m, 26-30 Sep 1944, Steyermark 58704, 58961 (male juv. NY); Ptari-tepui, alt 1220-2285 m, Oct-Nov 1944, Steyermark 59545, 59850, 60688 (female NY); Chimanta Massif, southwestern edge of Apacara-tepui, alt 1800-2000 m, 14 Apr 1953, Steyermark 74977 (female NY); swampy plateau of Aprada-tepui, Uriman, Aug 1953, Bernardi. 973 (female NY); Rio Icabaru, Hacha, alt 450-850 m, 27 Dec 1955-8 Jan 1956, Bernardi 2649, 2785, 2830 (male, female NY); NE of Serrania Pai-soi, alt 650-800m, 5-6 Jan 1962, Steyermark 90623 (2 NY); Auyan-tepui, alt 1600 m, 13 May 1964, Steyermark 93842 (2 NY). PERU. Loreto and San Martin: mouth of Santiago, Tessmann 4165 (sterile NY) Balsapuerto, alt 220 m, Jun 1933, Klug 3113 (2 NY); Zepalacio near Moya-bamba, alt 1200-1600 m, Mar 1934, Klug 3588 NY) BRAZIL. Amazonas: Sao Paulo de Olivenca, 26 Oct-11 Dec 1936, Krukoff 8700, 8830, 9000 (male NY).

Discussion:

Slilaginella oblonga Tulasne, Ann. Sci. Nat. II. 15: 248. 1851.

Hieronyma oblonga var genuina Miill.-Arg., Linnaea 34 : 66. 1865.

Hieronyma oblonga var oblonga Miill.-Arg. in DC., Prodr. 15(2): 271. 1966.

Hieronyma oblonga var genuina f glabra Steyermark, Fieldiana Bot. 28: 951. 1957.

Type. Stilaginella oblonga Tulasne, “Nascitur in Guiana anglica (Schomburgk, Herb., n. 805) (Herb. Mus. Paris et Lessert)" (photo NY)

Steyermark 60688 is the type of forma glabra; Steyermark 90623 is identical. Both have sharply acuminate leaves and glabrous midvein, and may represent a good variety or even a species, but further material is needed to decide this question

Distribution:Guyana South America| Venezuela South America| Peru South America| Brazil South America|