Bitter, ?Abh. Naturwiss. Vereine Bremen 23: 148. 1914.?, 1914.

Bitter, ?Repert. Spec. Nov. Regni Veg. 13: 91. 1914.?, 1914.

Bitter, ?Repert. Spec. Nov. Regni Veg. 13: 88. 1914.?, 1914.

Bitter, ?Repert. Spec. Nov. Regni Veg. 13: 170. 1914.?, 1914.

Bitter, ?Repert. Spec. Nov. Regni Veg. 13: 97. 1914.?, 1914.

Bitter, ?Repert. Spec. Nov. Regni Veg. 13: 171. 1914.?, 1914.

Bitter, ?Abh. Naturwiss. Vereine Bremen 23: 151. 1914.?, 1914.

Bitter, ?Repert. Spec. Nov. Regni Veg. 13: 94. 1914.?, 1914.

Bitter, ?Repert. Spec. Nov. Regni Veg. 13: 173. 1914.?, 1914.

Bitter and Bitter, ?Repert. Spec. Nov. Regni Veg. 13: 96. 1914.?, 1914.

Bitter, ?Repert. Spec. Nov. Regni Veg. 13: 169. 1914.?, 1914.

Bitter, ?Repert. Spec. Nov. Regni Veg. 13: 98. 1914.?, 1914.

Bitter, ?Abh. Naturwiss. Vereins Bremen 23: 120. 1914?, 1914.