1. The spore mother cell of Anthoceros;Davis;Bot. Gaz.,1899
2. Die Chlorophyllkörper der Selaginellen;Haberlandt;Flora,1888
3. Über die Plasmahaut der Chloroplasten in den Assimilationszellen von Selaginella Martensii Spring;Haberlandt;Ber. Deutsch. Bot. Ges.,1905
4. The pyrenoids of Anthoceros and Notothylas with especial reference to their presence in spore mother, cells;McAllister;Amer. Jour. Bot.,1926
5. Manifestations of polarity in plant cells, which apparently are without centrosomes;Marquette;Beih. Bot. Centralbl.,1907