Onionweed

Description:

Plant with tuber roots with tall stalks of white flowers that have a brown stripe down the middle of each petal. "The inflorescence is a panicle with widely-spaced flowers. Each flower is 5 to 12 millimeters wide with six tepals which are generally white or very pale pink with a neat central longitudinal stripe of brown to reddish-purple. The flowers are diurnal, closing at night and in overcast or low-light weather conditions. The fruit is a rounded capsule containing six seeds." - Wikipedia

Habitat:

Grassy area along trail at Kit Carson Park. "It is an invasive exotic weed in the United States, with significant infestations in California, Arizona, New Mexico, and Texas. It is listed as a Federal Noxious Weed by the United States Department of Agriculture." - Wikipedia It is native to the Mediterranean region.