TY  - JOUR 
T1  - Pollination biology of the endangered columnar cactus <i>Cipocereus crassisepalus</i>: a case of close relationship between plant and pollinator
JO  - Acta Botanica Brasilica
A1  - Martins, Cristiane
A1  - Oliveira, Reisla
A1  - Aguiar, Ludmilla M.S.
A1  - Antonini, Yasmine
SN  - 0102-3306
UL  - 10.1590/0102-33062019abb0219
VL  - 34 
Y1  - 2020
PB  - Brasil 
ER  -