Analysis of A Bouquet

Take first a Cowslip, then an Asphodel,
A bridal Rose, some snowy Orange flowers;
A Lily next, and by its spotless bell
Place the bright Iris, darling of the showers;
Set gold Nasturtiums, Elder blooms between,
And Heart's-ease to the Orchis marry sweetly;
Then with red Pinks, and slips of Evergreen,
You will possess -- all folded up discreetly --
In one bouquet, that none but you may know,
The name I love beyond all names below.