Glumaceae

Glumaceae is an obsolete botanical name for a family of flowering plants. This name is no longer in accepted usage, as advancements in plant taxonomy and phylogenetic analysis have led to its circumscription and splitting into other families. Historically, Glumaceae referred to a group of grass-like plants characterized by having flowers enclosed in bracts or glumes (hence the name).

The plants formerly classified under Glumaceae are now largely included within the family Poaceae (the true grasses) and Cyperaceae (the sedges). Other smaller families may also account for plants once considered part of the Glumaceae aggregate.

The term "Glumiflorae" was sometimes used as a superorder or higher-level grouping encompassing families like Glumaceae, reflecting their shared characteristics of having glumaceous flowers. Like Glumaceae, Glumiflorae is also an outdated taxonomic designation.

The key reason for the obsolescence of Glumaceae and related terms is that modern classification systems emphasize evolutionary relationships determined through molecular data and detailed morphological analysis. These analyses have shown that the plants once grouped together as Glumaceae do not form a monophyletic group (i.e., they do not share a single common ancestor to the exclusion of other plants). Consequently, these plants are now distributed among various families that more accurately reflect their evolutionary history. Therefore, using "Glumaceae" is discouraged in contemporary botanical literature and practice.