Meriweather has a meticulously documented website, Foraging Texas, devoted to edible wild plants in Texas. Lots of these plants are elsewhere too so bon appetit!
Cow’s Tongue Cactus
Scientific Name(s): Opuntia engelmannii var. linguiformis
What: pads, flowers, fruit
How: peeled pads can be pickled, fried, made into jerky; fruit can be raw or blended into a smoothy/icee drink; juice from strained fruit can be drunk, made into ice cream, mixed drinks, preserves.
Where: sunny fields, landscaping
When: fruit in fall, pads-all year though younger pads taste better.
Nutritional Value: vitamin C, some minerals
Dangers: burn or scrap off the tiny needles (glochids) before eating, 1% of population is allergic to cactus-based foods.