Date de publication : J. Linn. Soc., Bot., 4(Suppl.):
68. 1860. Voir aussi Benth.
in Mart., Fl. Bras., 15(1):
254-
255. 1862 [15/01/1862, fide TL-2,
518,
p. 337].
Type : "56.
M. floribundum (Benth. in Mart. Fl. Bras. Leg. ined.), [...] Hab. North Brazil and Guiana, near Santarem, Spruce; Cayenne, Martin; British Guiana, Rob. Schomburgk, 2nd. coll. n. 108, Rich. Schomburgk, n. 97. This, which I had at one time mistaken for the
M. macrophyllum differs in its smaller flowers [...].
β,
parviflorum, floribus vix 3 lin. longis. Hab. Eastern Peru, near Tarapoto, Spruce, n. 4544. I can perceive no other difference than the smaller flowers." [protologue].
Brésil, Pará, rives de l'Amazone en aval de Santarém, Canal de Tagipuru, 10/1849, R. Spruce 290 (LT: K [désigné par V.E. Rudd, Bol. Soc. Bot. México, 37:
127. 1977]; ILT: W).
Guyane française, J. Martin s.n. (ST: ?).
Guyana, R.H. Schomburgk II.108 [= M.R. Schomburgk 97] (ST: ?).