Yes, Freshness. Much better description.
Of course, we could add 'purity' to somewhat lessor degree, because there could be cross contamination with other airborne lily pollen by the constant air movement for exhaust/removal of ethylene gasses in the coolers. Also, when arrangements for wedding and funerals are made up, the pollen is always snipped off unless requested not to, allowing for more airborne pollen than one might think.
SIDE NOTE: For readers that may not know, the development of ethylene gasses begins within hours after light pollination and fertilization has taken place--even with a couple grains of pollen. These gases signal the end of a flowers journey and purpose in life and maturation and death of the flower results. Even it's fragrance will change and become more pungent. These ethylene gasses are universal in affect, so the gas given of by a pollenated lily, for example, will have a similar affect on all the other flowers in the cooler, whether they are carnations or petunias or whatever, whether they are pollenated or not. It causes petal wilt, the yellowing and dropping of leaves. So good air circulation and exhaust is a 'must'.
One can demonstrate the affect of ethylene gasses with almost any un-ripened fruit at home. Place any un-ripened fruit like a rock hard avovado in a bag with an apple (which gives off a lot of ethylene gas) and it will ripen almost overnight. Placing peaches in a bowl of apples will cause them to turn to mush. Now, you'll see the reasoning and importance behind the storage of mixed raw fruits or mixed raw vegetables in those specially made storage bags that are porous and allow for the escape of those gases.
And 'freshness' is the key word, all the way around!
