Assertion: mountain ash's leaflet | /r/HasProperty | fused at central vein
Facets:
value: sometimes
type: TEMPORAL
Source sentences:
text: Other species of the genus Sorbus easily hybridize with S. aucuparia and hybrid speciation can result; hybrids include Sorbus × hybrida, a small tree with oval serrated leaves and 2 to 3 pairs of leaflets, which is a hybrid with Sorbus × intermedia, and Sorbus thuringiaca, a medium-size tree with elongated leaves and 1 to 3 pairs of leaflets that are sometimes fused at the central vein, which is a hybrid with Sorbus aria.