you can identify both types with the same approach. In contrast with perennials, these weeds have a short window of time to germinate, grow, flower, and go to seed before they die. Given that they ...

This widely adapted perennial legume is grown in every state in the US ... Trifoliate leaves, with long narrow leaflets serrated at the tips. Stipules are large anointed. Flower is commonly purple but ...

This perennial sprawls along roadsides and in fields in the Houston area and in most of Texas. The flowers tend to close during the heat of the day. Blooms March-June. Five delicate petals form ...