Comparison Chart for Species of Poa

  • Character

    Poa annua

    Poa bulbosa
    ssp. vivipara

    Poa pratensis
    ssp. pratensis

    Poa secunda

    presence of bulblets

    absent

    present

    absent

    absent

    callus

    typically glabrous

    sparsely cobwebby hairs
    to glabrous

    woolly

    glabrous

    rachilla pubescence

    glabrous

    not applicable

    glabrous

    glabrous or
    sparsely hairy

    lemma vein appearance

    multiple veins
    distinctly ribbed

    not applicable

    only midvein
    distinctly ribbed

    only midvein
    weakly ribbed