Borago officinalis L.
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
Species Description - Taprooted annual 2–6 dm, hispid-setose and hispidulous; lower lvs petiolate, with broadly elliptic or ovate to oblanceolate blade 3–11 × 2–6 cm, the others progressively reduced and the upper often sessile and clasping; pedicels 1–4 cm; sep densely bristly, 1–1.5 cm in fr; cor 2 cm wide; anthers dark, 5–9 mm, the linear appendages 3 mm; nutlets subcylindric, 4–5 mm, rough and wrinkled; 2n=16. Native of Europe, sometimes cult., and established as a casual weed here and there in our range. May–Sept.