Douglas’s widow-grass is distributed from southern British Columbia to northern California. The species Olsynium douglasii (there are two varieties, var. douglasii and var. inflatum) is the only representative of the genus Olsynium in North America. Eleven other species are distributed in South America.
The common name widow-grass or “grass widow” was apparently coined by the botanist Rafinesque (previously highlighted in a botany resource link from this entry). The Flora of North America account for Olsynium cites Rafinesque’s explanation for the common name: “[meaning] hardly united, alluding to the stamens”.
For more photographs, see the entry for Olsynium douglasii on the web site of The Burke Museum of Natural History and Culture.
Photography resource link: Environmental Photography: Blending Art & Activism by Randy Beacham for Nature Photographers Online. The article features ten “tips” on environmental photography.