Laura Ponte's (who married one of Infanta Pilar's sons)
White roses: Pure and sincere love
Blue viburnum: deep and spiritual love
Symphoricarpos
Princess Victoria de Borbón-Dos Sicilias:

Letizia's:Spikes - fertility, joy and hope and offerings to Saint Isidro Labrador, patron of Madrid and the goddess Cybele
Isabelline roses - love and passion
Iris and lilies - for the Bourbons
Apple blossoms - In honour of the principality of Asturias and Our Lady of Atocha
Orange blossoms - Tribute to the Countess of Barcelona (JC's mother) and María de las Mercedes de Orleáns y Borbón, first wife of Alfonso XII

Kate's:Lily-of-the-valley – Return of happiness
Sweet William – Gallantry
Hyacinth – Constancy of love
Ivy: Fidelity; marriage; wedded love; friendship; affection
Myrtle: the emblem of marriage; love. (stems from a myrtle planted at Osborne House, Isle of Wight, by Queen Victoria in 1845, and a sprig from a plant grown from the myrtle used in The Queen’s wedding bouquet of 1947)

ML's
Tatiana's:
Camilla's:
Clotilde's:
MM's: