Rudolph Arnold Maas Geesteranus

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Rudolph Arnold Maas Geesteranus (1911–2003), Dutch lichenologist and botanist.

IPNI standard form: Maas Geest.

Taxon names authored

(List may be incomplete)

Physcia grisea f. harmandii Maas Geest., 1952
Physcia grisea f. sorediosa (Malbr.) Maas Geest., 1952
Physcia nigricans f. tremulicola (Nyl.) Maas Geest., 1952
Xeromphalina aspera Maas Geest., Persoonia 15(1): 50 (1992)



(List may be incomplete)

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