Key to the genera of Viscaceae

1Plants leafy
1'Plants lacking normally developed leaves
2Plants densely white to golden or brown stellate-hairy, especially on the young parts
2'Plants glabrous or nearly so
3Flowers minute (mostly less than 0.5 mm long); anthers 3, fused into a single unit; fruits up to 3 mm long; [in Malesia plants mostly less than 20 cm long; internodes in most species flattened in the one plane to form a cladode]
3'Flowers small (mostly 0.5-2 mm long); anthers 3 or 4, free from each other; fruits more than 3 mm long; [in Malesia plants mostly reaching more than 30 cm length; internodes in most species terete or when angular or flattened with the succeeding ones at right angles]
4Inflorescence a single 3- or 5-flowered cyme, sometimes with subsidiary cymes or flowers arising within or below the first; anthers opening by several pores; tepals not persistent on the fruit (except in V. loranthi)
4'Inflorescence a spike of decussate single flowers or 3-flowered cymes; anthers opening by slits; tepals persistent on the fruit