Two new species of the sigillarian cone Mazocarpon were discovered in Late Pennsylvanian sediments of the Appalachian Basin. Mazocarpon villosum sp. nov. represents a megasporangiate cone 22 mm in ...

Asteraceae presents one of the most diverse and intricate reproductive systems among flowering plants. The family is typified by its composite inflorescences, which combine both ray and disc florets ...

Desmaria mutabilis is unique in Loranthaceae in having dimorphic shoots, the short shoots producing a terminal inflorescence. Other unusual features in the family are well differentiated bud scales ...

IT is now nearly seventy years since the appearance of McLachlan's monograph on British Neuroptera. In the meantime, the most notable contributions to a knowledge of this subject have been the studies ...