Romaine lettuce is also commonly known as cos lettuce ... While most well-known for long green leaves, there are romaine varieties that stray from the norm you see in most stores.

Here's which types of lettuce are most popular, why these greens are good for you and what you need to be mindful of as you include more in your diet.

If your diet is lacking in vitamin K, ahead you'll find nine foods high in vitamin K. Parsley delivers a jumbo dose of the ...

The following factors increase the likelihood that lettuce will turn pink: The type of leafy green. Iceberg and romaine lettuces are most susceptible to turning pink, while other salad greens like ...

Food recalls happen every once in a while, and this time the CDC wants you to stay away from a common leafy green, which has ...

There is nothing worse than a boring bowl of green leaves served at a table ... Place half the cucumber and half the mixed leaves, Romaine lettuce and rocket in the bowl. Season, then top with ...

Romaine lettuce comes in second at 35% ... It's one of the most nutritious lettuce options and is "a versatile, iron-rich green that's often used in both raw and cooked dishes," says Messer.