RE‐ASSESSMENT OF CRATAEGUS FLAVA AITON AND ITS NOMENCLATURAL IMPLICATIONS FOR THE CRATAEGUS SERIAL NAME FLAVAE (LOUD.) REHD. AND ITS SECTIONAL EQUIVALENT

Summary Research at Kew and the British Museum has turned up the type and other authentic material of Crataegus flava Aiton. The discovery that this is a quite different species from that commonly called C. flava in the North American literature, indeed that it cannot belong to the same series, necessitates a new name for series Flavae , auctt. Amm. This new serial name is Lacrimatae Phipps based on C. lacrimata Small. Whether C. flava Aiton should be reassigned to the series Pulcherrimae (Beadle ex Sarg.) Robertson or to Intricatae (Sarg. ex Sarg.) Rehd. awaits the revision of these series.