Flower ID: IMG_4154.JPG-07-02-2020 Flower name (scientific): Linum sulcatum Riddell PY: 1836. Pronunciation guide: (phonetic spelling) LY-num sul-KAY-tum Flower name (common): Grooved Yellow Flax Family name (common): Flax Family name (scientific): Linaceae Scientific name origin: Genus: The Latin name for flax, with a Greek origin. Specific epithet: Latin for grooved. Common name origin: From the flower color, its similarity to common flax (Linum usitatissimum), and the fine longitudinal lines or shallow furrowing on the stems. Flower description: Size: 0.3 to 0.8 inches (0.8 to 2.0 cm) Petal count: 5 Color: yellow Other: flower arrangement, Panicle Plant description: Size: 8 to 32 inches (20 to 81 cm) Stem hairy: Other: Leaf description: attachment is alternate and/or opposite, type is simple. Leaves sessile with margins entire. Size: Leaves up to 3 cm long and 3 mm wide. Color: medium green Hairy: glabrous Other: Shape: leaf, linear to narrowly lanceolate (FNA), linear or linear-oblong (IL) Origin (native, introduced, invasive): Native Status (common, uncommon, threatened, rare): Uncommon Bloom time (typical): June to September Cycle (annual, biennial, perennial): Annual Habitat: Prairies, open woods, forest openings, sun or part shade, dry. Fruit: Capsules 2.5 to 3.3 mm in length. Seed: 1.5 to 2.1 mm in length, reddish brown. Importance to wildlife: Similar species (if any): Linum rigidum (Stiffstem Flax) has some resemblance. Linum sulcatum has a a pair of blackish-colored glands at the leaf base and flowers about 8 to 19 mm wide, whereas Linum rigidum lacks the blackish-colored glands at the leaf base, has larger flowers about 19 to 25 mm wide, and has a very restricted range in Wisconsin with very few reported observations. Ethnobotany: Latitude: 44.795762 Longitude: -91.513650 Altitude: 271.10 Distribution: In Wisconsin: (Adams, Brown, Buffalo, Columbia, Crawford, Dane, Dodge, Dunn, Eau Claire, Grant, Green, Iowa, Jackson, Jefferson, Kenosha, La Crosse, Lafayette, Marquette, Menominee, Monroe, Oneida, Pepin, Pierce, Racine, Richland, Rock, Sauk, Sheboygan, St. Croix, Trempealeau, Vernon, Walworth, Waukesha, Waushara) Click here for distribution map In US: (AL, AR, CT, FL, GA, IA, IL, IN, KS, KY, LA, MA, MD, MI, MN, MO, MS, NC, ND, NE, NH, NJ, NY, OH, OK, PA, RI, SD, TN, TX, VA, VT, WI, WV) Click here for distribution map In Canada: (MB, ON, QC, SK) Click here for distribution map References: Synonym(s): Basionym: na Homotypic Synonym(s): POWO lists 3 homotypic synonyms for this species. Heterotypic Synonym(s): POWO lists 3 heterotypic synonyms for this species. Autonym: na Wetland Status (NC): Not listed Wetland Status (MW): Not listed