Derris negrensis Benth.

• Region

  South America

• Country

  Brazil

• State/Province

  Amazonas

• Locality

  Rio Cuieiras, 50 km upstream, igapo near the farm of Sr. Nemerio

• Coordinates

  -2.62359, -60.3236

• Coordinate Uncertainty (m)

  1177.33

• Georeferencing Method

  Georeferencing Quick Reference Guide, Version 2012. Unsure of location of farm of Sr. Caldez; georeferenced to 50 km. along Rio Cuieiras, a tributary of Rio Negro. Using Google Maps, located Rio Cuieiras in Amazonas, Brazil. Used measurement tool to measure approximately 50 km. (50.0004 km.) along the river from the confluence of Rio Cuieiras and Rio Negro. Used Canadensys Lat/Long Crosshairs to find the coordinates, on adjacent land. Used distance measurement tool (Google Maps) again to find linear extent by measuring the distance from the approximated geographic center of the confluence of Rio Cuieiras and Rio Negro to the farthest extent of the junction. Input coordinates, linear extent (1125.75 m.), measurement error (.01 m.), and distance precision (100 m.) into the MaNIS Georeferencing Calculator to find the uncertainty radius.

• Geodetic Datum

  WGS84

• Distribution

  Map all specimens of this taxon

TOE NEW YORK BOTANICAL GARDEN
INSTITUTO NACIONAL DE PESQUISAS DA AMAZONIA
Plants of Brazilian Amaaonia
State of Amazonas
No. P21733
Derris
Rio Cuieiras, 50km. upstream, igapo near
the farm of Sr. Nemerlo. Black water flooded
river margin.
Scandent shrub.
K. Kubitzki, J.C. Ongley,
J.F. Ramos	March 30, 1974
Field work supported in greater part by the National Science Foundation
and coordinated by 6 .T. France. Specimens distributed to: INFA, MY, U. US
K, S, MG, F, A, R, P, M, MICH, G, O, HO, COL, YEN, UFMG.
02634426