Humulus japonicus Siebold & Zucc.

  • 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

    Humulus japonicus Siebold & Zucc.

  • Description

    Species Description - Weedy annual vine; stem and lvs much rougher than in no. 1 [Humulus lupulus L.]; petioles commonly longer than the 5–9-lobed blades; uppermost lvs usually 3–5-lobed; mature pistillate spikes to 2 cm, their bracts relatively small, under 1 cm, densely spinulose-ciliate, dull green, conspicuously and abruptly acuminate, scarcely glandular, releasing the ripe achenes; 2n=32 (pistillate), 34 (staminate). Native of e. Asia, escaped from cult. from N. Engl. to N.C. and Mo. July–Oct.

  • Common Names

    Japanese hops