1: Short line in letter back-fires (5)
2: Popular leader and Irish-American legendary hero (7)
3: Flower shop nosh about $41 (5)
4: Ratty cavalier redressed in proper horseman's uniform. (7, 6)
5: Shy person in River Township hiding collection (9)
6: Making syllabic omission, lied badly in Gateshead (7)
7: Upset Texas baseball player after the first (5)
9: Scenery has to get down by starting 12-across (7,6)
13: What's left when you burn the tree (3)
14: Conductor of opera rising in encore (9)
16: Wander around inside territory (3)
18: Most successful divers can be quite obnoxious (7)
20: Pitman's state goddess (7)
21: Hand calculators, starting as backups, add critical information (5)
23: Containers holding top-grade instruments (5)
24: To escape with lover from Warsaw, man climbs last section of fence (5)