All Jonquils are Daffodils. All Daffodils are not Jonquils, but they are all Narcissus.
Come explore what's blooming in my garden today and I'll point out some of the different types.
These are Trumpet Daffodils.
These are Jonquils; cultivar is 'Sweetness'
Both are early bloomers. Other daffodils will extend the season until late March, ending with 'Baby Moon' and some other late bloomers.
This is a Cyclamineus daffodil, 'Tete a Tete'
a short-necked early bloomer.
Large Cupped Daffodils including 'Fortune.'
'Ice Follies' is a great daffodil with white petals
also from the Division 'large cupped' daffodil.
Two last views of some 'Sweetness' jonquillas that I moved when they stopped blooming in too much shade. Looks as if they're happy here if they could get a little timely fertilizer.
Narcissus are separated into 13 divisions, including the familiar Large Cups, Trumpets, Jonquillas and so on. I think the British just use 10 divisions. It's okay to call all of them Daffodils. I do. Mostly.
Here's your botany lesson for today: Narcissus (the genus, not the Paperwhite narcissus that can be forced in water --Paperwhites are Tazetta daffodils, isn't that confusing?) Anyhow, Narcissus the genus is in the family of Amaryllis. To further confuse you, the family Amaryllis contains the big colorful blooming Amaryllis that we force at Christmastime. Those are now called Hippeastrums.
All this naming business started with Linnaeus in the 1700s. Botanists still do not always agree and they're always moving things from one family to another, or changing names of things.
I call this Hippeastrum an Amaryllis.
It surprised me this week with blossoms.
It doesn't really matter what you call the plants in your own garden, the Nomenclature Police are not coming after you. It does help if you get close enough to the correct name that people know what you mean. Like Daisy.
Gerbera Daisy blooming in my garden today.