Monotagma K. Schum.
Pflanzenreich IV. 48: 166 (1902)

Description:
     Rosulate herbs. Inflorescence a usually richly branched synflorescence, often congested; florescences narrowly spiciform with sclerotic, rolled spathes. Cymules 1-flowered, subbrachyblastic, interphyll (usually) and bracteoles absent. Corolla tube very long and narrow; outer staminode 1, petaloid; ovary with 1 ovulate locule. (From Kubitzki, et al., p. 289)

Geographical Distribution:
     Plants of the genus Monotagma are widespread in humid parts of South America.

Taxonomic Diversity:
     Comprises 37 species.