$modus 0:
$modus 1:
Calamagrostis coarctata
Calamagrostis coarctata Eaton [Accepted]
Gramineae Pooideae Aveneae Alopecurinae
5 174174 Calamagrostis coarctata Eaton
J. Torrey, Fl. New York [coloured version], vol. 2 : t. 151 (1843) [unsigned]