Compilation
Urtica hirsuta

Erect annual monoecious herbs to c. 1 m. tall. Stems somewhat fleshy above, ± woody below, little branched, leafy in upper part, covered with stinging hairs to c. 1 mm. long and soft glandular hairs 1–2(3) mm. long. Leaves 10–15 x 8–12 cm., ovate to broadly ovate; apex acuminate; base rounded to truncate; margin regularly serrate, with 30–40 teeth per side c. 0.5 mm. long; lamina usually with stinging hairs on both sides but without glandular hairs. Petiole 5–15 cm. long, usually covered with soft glandular hairs and a few stinging hairs. Stipules up to 1 cm. long, linear-lanceolate, fused for ± half their length. Inflorescences bisexual, mainly in the axils of the uppermost leaves, consisting of profusely branched panicles up to c. 20 cm. long, on peduncles 4–10 cm. long, axes covered with glandular and stinging hairs. Male flowers intermixed with female flowers or mostly at the base of the inflorescences, soon falling, pedicellate, perianth 4–5-merous, 1–2 mm. in diam., usually with glandular hairs on the outside. Female flowers densely clustered, tepals 4 unequal, pedicel unwinged. Achenes 1–2 mm. long, ovoid, laterally compressed, with circular and rugose markings on the sides, shortly stipitate, shed without the perianth.