There are about 90 species of Lactuca found around the world, especially in the Northern Hemisphere. Arizona Flora lists 4 species and one of those is the varmint Lactuca serriola (“varmint” means introduced European native). Lactuca sativa is the mother of all cultivated lettuces. I looked in a favorite vegetable seed catalogue and it listed over 90 varieties of Lactuca sativa. Whoa! That’s because of all the specialty lettuces you can find at farmers’ markets or in restaurants or in clear plastic boxes in grocery stores. And all you wanted was a head of iceberg! The specific epithet sativa, by the way, means cultivated, so whenever you see that in a botanical name you can assume the plant was or still is cultivated.
Grass leaf lettuce or Lactuca graminifolia is found over much of Arizona from 5,000′ to 8,000′ in elevation, and, just in case you didn’t know, Lactuca is in the Asteraceae, and now you do.
Petey is excited about finding a wonderful weedy herb in the Goosefoot Family (Chenopodiaceae) growing along the banks of the ol’ Guajolote.
The common name of Calylophus hartwegii is Sundrops. That’s considerably easier to say and I suspect that the common name covers a few species...
I think it’s fascinating that there are several species of winter fat found in Eurasia and Europe. That’s where the genus was first described...
