Last one ! 11a = herbaceous perennial plant / plant goddess I adored initially (cryptic) - 9 letters A _ T _ M _ S _ A I think its "SIA" at the end, but the goddess bit is confusing me as ARTEMIS fits
17d Fabled city in South America sought by Spanish explorers in the 16th Century (2,6) E _ S _ R _ D _ 22a Sharp intake of breath, as in shock or surprise (4) _ A _ _ Thanks in advance.