Cyperus esculentus var. leptostachyus
Yellow nutsedge
Photo: parent species Cyperus esculentus · (c) Douglas Goldman, some rights reserved (CC BY-SA), uploaded by Douglas Goldman · licence
Family: Cyperaceae · Type: Grass · Native
Cyperus esculentus var. leptostachyus (Yellow nutsedge) is a native California grass in the Cyperaceae family, recognized by tubers and lance-ovate bracts help distinguish from similar species.
Yellow nutsedge is a native perennial found in California's agricultural and disturbed landscapes at elevations below 1,200 meters. Flowering during summer, this sedge produces small spreading spikelets with delicate lance-ovate flower bracts 1.8 to 2.7 millimeters long. Growing 30 to 40 centimeters tall with slender, upright stems, it forms dense clumps in open ground. Its leaves are narrow and grass-like, emerging from a complex underground system of tubers and rhizomes. The tiny fruits are approximately 1.2 millimeters long, contributing to the plant's ability to spread rapidly in disturbed environments.
Identification and appearance
Key characters: 19 sympatric species; tubers and lance-ovate bracts help distinguish from similar species
Habitat and range
Habitat: Cropland, disturbed places
Elevation: < 1200 m
Outside California: British Columbia, United States, Mexico, Central America, South America, alien in western Europe
Bloom period
Cyperus esculentus var. leptostachyus blooms Summer.
How to tell it apart
vs Carex: Cyperus has umbrella clusters with flat spikes; Carex has brown/green spikelets with seeds in individual flasks.; vs Scirpus: Cyperus has flattened ribbon-like spikes; Scirpus has rounded, cylindrical spikelets.; vs Juncus: Cyperus has triangular stems and flat flower spikes; Juncus has round stems and individual flowers.; vs Sticherus: Cyperus is a sedge with triangular stem; Sticherus is a fern with fronds.; vs Eleusine: Cyperus has triangular stems; Eleusine is a grass with round stems and obvious grass flowers.
Frequently asked questions
Is Cyperus esculentus var. leptostachyus native to California?
Yes. Cyperus esculentus var. leptostachyus is native to California (recorded as native).
When does Cyperus esculentus var. leptostachyus bloom?
Cyperus esculentus var. leptostachyus blooms Summer.
What plant family does Cyperus esculentus var. leptostachyus belong to?
Cyperus esculentus var. leptostachyus is in the Cyperaceae family, genus Cyperus.
What habitat does Cyperus esculentus var. leptostachyus grow in?
Cyperus esculentus var. leptostachyus grows in Cropland, disturbed places.
Related species
Other California species in the same genus, family, or bioregion.
Sources: Jepson eFlora · CalPhotos
Last updated 2026-10-07
Data from The California Species Project — 14,000+ California species with verified data from CNPS, CDFW, USFWS, Cal-IPC, and more.