Aeonium 'Kiwi'

A-E-I-O-U Only plant I know that uses all the vowels. Not to be confused with echeveria or sempervivum, the latter AKA house leeks or hens and chicks. Like escheveria, aeonium is not hardy in my zone 5.

Torenia fournieri

The linked anthers spring apart dispersing pollen. As they are, they resemble a delicate diamond ring or pendant. 

Gentian

Both winter and I forgot about this one. Another spring surprise.

Papaver orientalis

Spring planting time means heavy traffic on my garden path. I'm always speeding. All the signals were green yesterday -- almost ran a red this morning.