Blepharipappus scaber, commonly known as rough eyelashweed, is a herbaceous annual plant belonging to the Asteraceae family. This species is recognized for its delicate appearance and its role within its native ecosystems. The growth habit of Blepharipappus scaber is typically erect to spreading, reaching a modest height that generally ranges from 10 to 40 centimeters. Its stems are slender and often branched, contributing to a somewhat airy presentation. The leaves are arranged alternately along the stem and are characterized by their simple, linear to narrowly lanceolate shape. Leaf margins can be entire or slightly toothed, and the surface often exhibits a slightly rough texture, which is reflected in the common name "rough eyelashweed." The inflorescence is a capitulum, or flower head, typical of the Asteraceae family. These flower heads are usually solitary or borne in loose clusters at the tips of stems. Each capitulum contains ray florets and disc florets. The ray florets are typically white or pale pink, while the disc florets are usually yellow. The fruit is an achene, a small, dry, indehiscent fruit, which is characteristic of the sunflower family. Blepharipappus scaber is native to western North America, with its distribution primarily encompassing parts of California and Oregon in the United States. It thrives in a variety of open, often disturbed habitats. These include grasslands, open woodlands, chaparral, and sandy or gravelly areas, frequently found along roadsides and in waste places. The plant prefers well-drained soils and typically grows in full sun to partial shade. Its annual life cycle allows it to colonize ephemeral habitats and reproduce effectively in areas with seasonal moisture. Cultivation requirements are generally straightforward for those seeking to grow it, mirroring its natural preferences for well-drained soil and adequate sunlight. While not widely cultivated for ornamental purposes, Blepharipappus scaber holds ecological significance as a component of native plant communities. Its presence contributes to biodiversity and provides a food source or habitat for various insects and small wildlife within its native range. There is no established record of significant agricultural, medicinal, culinary, or economic importance for this species. An interesting characteristic of Blepharipappus scaber is its adaptation to arid or semi-arid environments, where its annual life cycle allows it to complete its development during favorable wet periods and survive dry seasons as seeds. The specific morphology of its achenes and pappus, if present and well-developed, likely aids in seed dispersal by wind. The "eyelashweed" part of its common name may refer to the appearance of the pappus bristles, which can resemble fine hairs or eyelashes, though this feature can vary.