The large inflorescences of Cyperus solidus grow at the tips of long naked stems. Numerous rounded clusters of first green, then brown spikelets radiate from the stem-tip on straight rays of variable length. They are subtended by long green, leaf-like bracts protruding from the inflorescence.
The coarse spikelets in picture are mostly white-tipped. Many bisexual, fertile florets with supporting glumes are present in each spikelet. There is no perianth in a floret but one or more stamens and a slender style that may be branched (Pooley, et al, 2025; Leistner, (Ed.), 2000; Pooley, 1998; iNaturalist).