Alnus glutinosa (L.) Gaertn.

  • 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

    Alnus glutinosa (L.) Gaertn.

  • Description

    Species Description - Tree, with young parts very glutinous; lvs broadly oval to obovate or subrotund, broadly rounded above or retuse, broadly cuneate to rounded at base, finely serrate, with 5–8 principal veins on a side; fruiting catkins very glutinous, evidently pedunculate in axillary infls, 1.5–2.5 cm, 10–13 mm thick; frs elliptic or suborbicular, 2.5–3.5 mm, narrowly bordered; 2n=28. Native of Eurasia and n. Afr., planted especially along roadsides and occasionally escaped in our range. (A. alnus; A. vulgaris)

  • Common Names

    black alder