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Greenwoodiella, a new genus of Spiranthinae (Orchidaceae) from North and Central America and the Greater Antilles, with a new species from the Chihuahuan Desert
Tooth sequence in certain trilophodont tetrabelodont mastodons; and, Trilophodon (Serridentinus) pojoaquensis, new species. Bulletin of the AMNH; v. 56, article 2.
New records, additions and a new species, Sematophyllum socotrense Buck (Sematophyllaceae, Musci) to the bryophyte flora of Socotra (Yemen). Studies in Arabian bryophytes 19.