Asplenium ruta-muraria L.

• Authority

  Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.

• Family

  Aspleniaceae

• Scientific Name

  Asplenium ruta-muraria L.

• Description

  Species Description - Rhizome 1.5–2 mm thick, the lanceolate scales 1.5–4 mm; lvs numerous, spreading, 4–17 cm, the petiole to 7 cm, green blade ovate or rhombic, firm, bipinnate or bipinnate- pinnatifid below, merely pinnate above, the rachis green; pinnae alternate, ca 6 pairs, long-petiolulate (petiolule 2–5 mm), the basal ones with 3–6 flabellate or rhombic, finely toothed and sometimes deeply lobed pinnules to 12 mm; 2n=144. Rock-crevices and ledges, mostly on limestone; interruptedly circumboreal, in Amer. from Mass. and Vt. to Mich., s. to Ala., Ill., Mo., and Ark. (A. cryptolepis, the Amer. pls.)

• Common Names

  wall-rue