Description originale
Hansen, B. & Morales, J. 2019. New species and a new lectotypifications in Forsteronia (Apocynaceae, Mesechiteae). Brittonia, 71(4): 435-444.

 

Statut pour la Guyane française
Hansen, B. & Morales, J. 2019. New species and a new lectotypifications in Forsteronia (Apocynaceae, Mesechiteae). Brittonia, 71(4): 435-444. [GF = A]

 

Date de publication : Brittonia, 71(4): 439-440,  f. 3-4. 2019 [07/11/2019].

Distribution : Amazonie orientale: Pará (Brésil), Guyane française, Sipaliwini (Suriname); proobablement aussi Guyana (Hansen & Morales 2019; GBIF).

Ecologie : Forêt de terre ferme, floraison juillet-novembre.

Taxonomie : Forsteronia paraensis resembles F. laurifolia, which is found along the Rio Negro and other black-water rivers in Brazil and southern Venezuela. The fused nectaries, short, subcylindric inflorescences, and exserted style-head are characteristics shared by these two species. Forsteronia paraensis resembles F. laurifolia (Benth.) A.DC. but differs by its larger leaves (8–15 cm vs. 5–8 cm), leaf blades with conspicuously impressed secondary veins (vs. inconspicuously impressed), larger inflorescences (3–8 cm vs. 1–3.5 cm), and pubescent ovary (vs. glabrous). (Hansen & Morales 2019).

Type : Brésil, Pará, mata da Serraria, grounds of IAN, Belém, 31/08/1965, fleurs, G.T. Prance & T.D. Pennington 1258 (HT: NY02331667; IT: B100242274, V0422785F, F neg 61096, GH00339809, S-R-2356, U0000508, US01106118).
Brésil, Pará, mata de Cia Pirelli, fazenda Uriboca, 07/1958, fleurs, J. Pires 6850 (PT: US).
Brésil, Pará/Amapá, bas Jari, Monte Dourado, Planalto A, 17/09/1968, fleurs, C. Silva 1001 (PT: USF).
Brésil, Pará/Amapá, bas Jari, Monte Dourado, Planalto B, Pilão, 09/1992, fleurs, C. Silva 1045 (PT: CR).
Brésil, Pará/Amapá, bas Jari, Monte Dourado, Planalto B, Pilão, 12/11/1968, fleurs, C. Silva 1393 (PT: CR, USF).
Suriname, Sipaliwini: Old GMD Camp III, ca. 18 km SW of the Kayser airstrip, ca. 330 miles SSW of Paramaribo, 02/11/1976, fleurs, S.A. Mori & A. Bolten 8596 (PT: NY).