Did you register the block as having an ItemBlock?
E.g.
GameRegistry.registerBlock(blockOreFlowers, ItemBlockOreFlower.class, "ore_flowers");
Because if you didn't, you won't see their names. And if you do, it'll crash (because you're telling the game it has 16 sub items and your ItemBlock class only has 3 names. As soon as it tries to get the name for meta-4 to 15, it'll ArrayIndexOutOfBounds on you).