Francey, ?Notizbl. Bot. Gart. Berlin-Dahlem 11: 987. 1934?, 1934.

Francey, ?Notizbl. Bot. Gart. Berlin-Dahlem 11: 989. 1934?, 1934.

Francey, ?Notizbl. Bot. Gart. Berlin-Dahlem 11: 985. 1934?, 1934.

Francey, ?Notizbl. Bot. Gart. Berlin-Dahlem 11: 983. 1934?, 1934.

Francey, ?Notizbl. Bot. Gart. Berlin-Dahlem 11: 986. 1934?, 1934.

Francey, ?Notizbl. Bot. Gart. Berlin-Dahlem 11: 988. 1934?, 1934.