Possible Clues:

• Mr O'Casey is in the tree
• Tree with two-winged fruit
• Tree for the odd Rose Macy
• That tree sounds ill, with a more of an end to it
• Woundingly, may score tree
• Sounds as it one might vomit a further amount in the forest
• Shade tree
• Tree surgery's frontiers about to get larger
• Thus, say, am finding raw material behind tree
• Does not sound well. An increasingly unhealthy tree