Rumex conglomeratus

Clustered dock

Family: Polygonaceae · Type: perennial · Not Native

Clustered dock is a naturalized perennial herb found in California's Foothill Woodlands and Southeastern Great Basin regions in moist places at elevations below 1,500 meters. Flowering from May to August, this plant produces small greenish flowers in dense, interrupted clusters with thread-like pedicels. Growing with erect stems 30 to 80 centimeters tall and a vertical fusiform taproot, it develops lanceolate to lance-ovate leaves 10 to 30 centimeters long with entire margins. Its leaves have a distinctive base that ranges from tapered to slightly heart-shaped, with a relatively flat margin and slightly acute tip. The fruit is small, generally dark red-brown, and measures 1.5 to 2 millimeters long.

Habitat: Common. Moist places

Bloom period: May-Aug

Elevation: < 1500 m

Bioregions: CA-FP, SNE

California counties: Contra Costa, Los Angeles, Ventura, Kern, Butte, Riverside, Humboldt, Mendocino, Inyo, Orange, San Bernardino, Lake, Santa Barbara, Fresno, San Diego, San Luis Obispo, Marin, Monterey, Sacramento, Plumas, Madera, Sonoma, Amador, Nevada, El Dorado, Alameda, Merced, Napa, San Joaquin, Siskiyou, Solano, Sutter, Tuolumne, Yolo, Yuba, Del Norte, San Mateo, San Francisco, Santa Clara, Santa Cruz, Tulare, Stanislaus, Mariposa, Shasta, Imperial, Colusa

Data from The California Species Project — 14,000+ California species with verified data from CNPS, CDFW, USFWS, Jepson eFlora, Cal-IPC, and more.