Lonicera involucrata

Twinberry, Twinberry

Family: Caprifoliaceae · Type: shrub · Native

Twinberry is a native shrub found in mixed montane forests and riparian areas from low to mid-elevation zones. Flowering from May to July, this plant produces yellow-tinged flowers in distinctive paired clusters surrounded by conspicuous leaf-like bracts that partially enclose the developing fruit. Growing 0.6 to 3 meters tall with erect stems that are sparsely hairy and glandular, the shrub has a distinctive branching structure. Its leaves are elliptic to ovate, 3 to 12 centimeters long with rounded or tapered bases and acute tips. The fruit develops as a glossy black berry nestled within an enlarged purple or red spreading involucre, creating a striking visual contrast.

California counties: Lake, Humboldt, San Diego, Mendocino, Fresno, Mariposa, Santa Clara, San Luis Obispo, Tulare, Del Norte, Alameda, Sonoma, Nevada, Monterey, Alpine, Tuolumne, Plumas, Sierra, Yuba, Mono, Madera, Contra Costa, Modoc, Marin, San Francisco, Siskiyou, Santa Barbara, San Mateo, El Dorado, Santa Cruz, Butte, Glenn, Lassen, Colusa

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