Monographs Details: Bonnetia dinizii Huber
Authority: Maguire, Bassett. 1972. The botany of the Guayana Highland--part IX. Mem. New York Bot. Gard. 23: 1-832.
Description:Distribution and Ecology - Distribution. BRAZIL. Para: Ariramba, A. Ducke 8094 (type); small graceful tree with rose-colored flowers, Campos de l’Ariramba, Rio Trombetas, 2 Dec 1910, Ducke 11298.
Type. “Hab in campis ad fl Ariramba Guianae brasiliensis,” small graceful tree with rose-colored flowers, 23 Nov 1906, Rio Trombetas, Para, Brazil, A. Ducke 8094 (presumably MG, photo F, GH).
Bonnetia dinizii is apparently represented by only the two scanty collections made by Ducke on the savannas at Ariramba on the Rio Trombetas. Kobuski (1948)46 related these specimens to B. paniculata, an assignment to which I agree. Departures from the variable B. paniculata reside in the terete, non-compressed peduncles and the nearly isolateral leaves. Small lanceolate, early caducous bracteoles are characteristic of B. paniculata. On the Ducke specimens noted above the bracts seem more tardily deciduous.
Until more ample series of this interesting Bonnetia are obtained, I prefer to place it only provisionally in the schematic arrangement of the genus.
Distribution:Brazil South America