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