1: Left behind? Shiver violently and wither (7)
5: Administered dose of vitamin (between 100 and 1000) in head (7)
8: South of France, an African country (5)
9: Produced hybrid green date (9)
11: Neurotic lass edited letter, concealing the way it was rated. (7)
14: One might be uplifted if a cockney spoke of arts such as opera. (7)
15: Material from N.Y. - Long Island (5)
17: Turkey breast, for instance, comes from something in grain (5,4)
18: Burial place of a Kennedy girl, not an Askew (9)
20: Story about a little boy -- save for later discussion (5)
22: I misread _Times_ article's final detail (7)
23: Eastern oxcart confounds blackmailer (7)
25: Rebs to can fresh edible crustacean from southern states (5,4)
27: The world's broken heart (5)
29: Borderland has acting ruler (7)
30: Recessive DNA parts not very impressive for rotten person (2-3-2)