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[ricxx]

11a Small arctic whale with one long spiral tusk in the male (7)

15a Tropical plant genus of the order Zingiberales to which bananas belong (4)

20a Goddess of abundance in Roman mythology, identified in Milton's Paradise Lost as the consort of Saturn (3)

22a Character played by Keanu Reeves in The Matrix and its two sequels (3)

26a Name for Queen Elizabeth I, used for the character representing her in Edmund Spenser's The Faerie Queene (8)

29a Open trench or ditch conveying water to a millwheel (4)

30a CGS unit of luminance equal to 1 candela per sq.cm (5)

31a Volcanic island in the Tyrrhenian Sea in the Lipari Islands off the north coast of Sicily (9)

34a Daughter of Polonius and sister of Laertes in Shakespeare's Hamlet (7)

36a Derived SI unit of work or energy equivalent to 1 watt-second, 107 ergs or 0.2390 calories (5)

7d Margaret ******, Canadian author of novels including the Booker Prize-winning The Blind Assassin (6)

15d European host city of Expo 2015, running from May 1 to October 31 (5)

23d Secret dungeon only accessible through a trapdoor in its ceiling, from French meaning forget (9)

27d Rich fabric woven with a raised pattern, typically with gold or silver threads; chiefly used for upholstery and draperies (7)

[scorpiojo]

30 Stilb?