Fraxinus pennsylvanica Marshall

  • Authority

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

  • Family


  • Scientific Name

    Fraxinus pennsylvanica Marshall

  • Description

    Species Description - Tree to 25 m; bark flaky; lfls 5–9, usually 7, lanceolate or lance-ovate to oblong or elliptic, acuminate to a blunt or acute tip, serrate to crenulate or subentire, not papillose beneath, acute or broadly cuneate and often inequilateral at base, usually ± decurrent onto the short petiolule or subsessile; twigs and lvs densely pubescent to often glabrous; terminal bud acute, higher than wide; lf-scars with truncate or barely concave upper margin; anthers of no. 1; fr linear to spatulate, the wing extending to about the middle of the body, its free part, above the terete or subterete body (this mostly less than 2 mm wide) commonly shorter than the body itself and 3–8, usually 5–6 mm wide; cal 1–1.5 mm, usually cleft on one side; 2n=46. Moist or often wet woods; N.S. and Que. to Alta., s. to Fla. and Tex. (F. campestris) Typical F. pennsylvanica, with the twigs, infl, and lower surfaces of the lvs densely hairy, is called red ash. Glabrous plants are called green ash; these have been segregated as var. subintegerrima (Vahl) Fernald (F. lanceolata), but are probably not taxonomically significant.