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1951. Die Wasserkapazitat der Moos- und Flechtendecke des Waldes. Forstwiss. 

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1951. The genus Orthodontium. Academ. Proefschr. xiii + 80 pp. Amsterdam: North- 



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1935. Wuchsformen und Wuchstypen der europaischen Laubmoose. Nova Acta Leo- 

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1941. Physiological studies on mosses. II. Spore longevity in Physcomitrium turhi- 

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1943. Influence of the Hydrogen-ion concentration of the substrate on the develop- 

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