Carex umbrosa was created in 1801.
Hypersypnoides umbrosa was created in 1881.
Syntypistis umbrosa was created in 1927.
Ceratarcha umbrosa was created in 1894.
Pteris umbrosa was created in 1810.
Scedopla umbrosa was created in 1916.
Carex disperma was created in 1820.
Carex neurophora was created in 1923.
Carex heteroneura was created in 1880.
Carex pellita was created in 1805.
Carex simulata was created in 1908.
Carex illota was created in 1889.
Carex mariposana was created in 1917.