Natuurtijdschriften

In memoriam Betje Polak (1901–1980), pioneer of peat research in The Netherlands and in the Tropics Article

Acta botanica neerlandica, 30(5/6), 337-343.

A.J. Havinga and J. Muller

January 1981
Nectar and the pollination of bread fruit, Artocarpus altilis (Moraceae) Article

Acta botanica neerlandica, 30(5/6), 345-352.

N.B.M. Brantjes

January 1981
Taxonomic studies on Urospora (Acrosiphoniales, Chlorophyceae) in Western Europe Article

Acta botanica neerlandica, 30(5/6), 353-431.

G.M. Lokhorst and B.J. Trask

January 1981
Spirotaenia diplohelica spec. nov. (Chlorophyta, Mesotaeniaceae) Article

Acta botanica neerlandica, 30(5/6), 433-437.

P.F.M. Coesel

January 1981
On some anomalies during megasporogenesis in Gasteria verrucosa (Liliaceae) Article

Acta botanica neerlandica, 30(5/6), 439-447.

M.T.M. Willemse and R.N. Kapil

January 1981
New data and field-observations on Trichilia grandifolia Oliv. (Meliaceae) Article

Acta botanica neerlandica, 30(5/6), 449-458.

E.M.C. Groenendijk and J.J.F.E. de Wilde

January 1981
Development of the seed of Trichilia grandifolia Oliv. (Meliaceae) Article

Acta botanica neerlandica, 30(5/6), 459-464.

F.D. Boesewinkel

January 1981
Anthecological relations between reputedly anemophilous flowers and syrphid flie. IV. A note on the anthecology of Scirpus maritimus L. Article

Acta botanica neerlandica, 30(5/6), 465-473.

H. Leereveld, A.D.J. Meeuse and P. Stelleman

January 1981

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