This weed is kind of interesting. It's a biennial, but I already said that. It has large yellow dandelion-like flowers, only much bigger, about 2 inches across. It belongs in the aster family because of it's composite flowers.
Another interesting feature is that the flowers open in the morning and close again by around or a little past noon. This has given this plant the common name of 'Jack-go-to-bed-at-noon'. That's kind of cute. Another common name for it is Meadow Salsify. The seeds on this plant look a lot like that of a dandelion too, except much larger! They are spread by the wind, floating through the air just as a dandelion seed would. But that will never happen to my Goat's Beard! It is coming out...now!
Family: Asteraceae. Genus: Trogopogon. Species: T. pratensis
Common name: Yellow Goat's Beard, Meadow Salsify, Jack-go-to-bed-at-noon.