conda_list() does not list my environments

I'm trying to get going with reticulate within my conda environments, but I cant get reticulate to find my environments. Running conda_list() without specifying my conda executable results in this output.

> conda_list()
       name                                 python
1 Anaconda3 C:\\ProgramData\\Anaconda3\\python.exe

But if I run conda env list within my cmd, I get the following:

(base) C:\>conda env list
# conda environments:
#
base                  *  C:\ProgramData\Anaconda3
dummy3                   C:\Users\rata\.conda\envs\dummy3

I thought the root of this is probably caused by reticulate using a different conda executable than what I'm using in my cmd. So I copied the output of path from cmd into R, searched all paths for conda.*-Files and ran conda_list() on each of these files. I was hoping that at least one of them would return the full list of my environments, but this does not seem to be the case. What am I doing wrong?

library(reticulate)
#> Warning: Paket 'reticulate' wurde unter R Version 3.6.1 erstellt
library(tidyverse)
#> Warning: Paket 'tidyverse' wurde unter R Version 3.6.1 erstellt
#> Warning: Paket 'dplyr' wurde unter R Version 3.6.1 erstellt


paths <- "C:/ProgramData/Anaconda3;C:/ProgramData/Anaconda3/Library/mingw-w64/bin;C:/ProgramData/Anaconda3/Library/usr/bin;C:/ProgramData/Anaconda3/Library/bin;C:/ProgramData/Anaconda3/Scripts;C:/ProgramData/Anaconda3/bin;C:/ProgramData/Anaconda3/condabin;C:/Program Files/Python36/Scripts/;C:/Program Files/Python36/;C:/WINDOWS/system32;C:/WINDOWS;C:/WINDOWS/System32/Wbem;C:/WINDOWS/System32/WindowsPowerShell/v1.0/;C:/WINDOWS/System32/OpenSSH/;C:/Program Files/Git/cmd;C:/Program Files/FME/;C:/Program Files (x86)/Sennheiser/SoftphoneSDK/;C:/Users/rata/AppData/Local/Microsoft/WindowsApps;C:/Users/rata/AppData/Roaming/TinyTeX/bin/win32"


paths <- strsplit(paths,";")[[1]]

paths_conda <- map(paths,function(x){
  fil <- list.files(x,full.names = F)
  fil <- fil[grepl("conda\\.",fil,ignore.case = FALSE)]
  if(length(fil)>0){list(paste(x,fil,sep = "/"))}
}) 


paths_conda <- paths_conda[lengths(paths_conda)>0] 

paths_conda <- unlist(paths_conda)

paths_conda
#> [1] "C:/ProgramData/Anaconda3/Library/bin/conda.bat"
#> [2] "C:/ProgramData/Anaconda3/Scripts/anaconda.exe" 
#> [3] "C:/ProgramData/Anaconda3/Scripts/conda.exe"    
#> [4] "C:/ProgramData/Anaconda3/condabin/conda.bat"


map_dfr(paths_conda,~conda_list(.x))
#>        name                                 python
#> 1 Anaconda3 C:\\ProgramData\\Anaconda3\\python.exe
#> 2 Anaconda3 C:\\ProgramData\\Anaconda3\\python.exe
#> 3 Anaconda3 C:\\ProgramData\\Anaconda3\\python.exe

^{Created on 2019-10-21 by the reprex package (v0.3.0)}

Start by reproducing the reported difference between reticulate's conda_list() and the command-line conda env list on Windows. Inspect the conda_list() entry point and compare the environments each command discovers. Done means conda_list() includes the dummy3 environment shown by conda env list.