The Botany Photo of the Day page at the University of British Columbia Botanical Garden site is always worth a visit. They post a photo, along with a brief discussion that points to a pile of references that you could follow around and keep yourself happy, interested and unproductive for much of a morning. Why go outside and pull weeds?

Their plant for May Day, Fritillaria affinis, is a native of Western North America, and a plant occasionally offered in bulb catalogs. Fritillarias come from dry-summer regions and require similar conditions to survive in gardens. This is one of the easier species, hardy from zone 6-9.

Photo by Jackie Chambers [ source ]