coastal manroot

Marah oregana

Member of manroots (genus Marah)
gourd family (family Cucurbitaceae)
dicots (class Magnoliopsida)
white in flowering plants

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• corolla has a “double cup”, with an extra bulging cup beyond the shallow cup attaching it to the pedicel
• white
• fruit 4–8 cm, ± spheric, tapered to beak, generally striped dark green; prickles generally dense, stiff or flexible, generally 0 at tip, unhooked
• seeds disk-shaped

Toxicity of gourd (Cucurbitaceae spp.):
0 – Non-toxic.

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Chris’s observations: 8 (all are research grade)

Locations:

• Russian Ridge OSP: 3
• Coal Creek OSP: 2
• Sweeney Ridge National Recreation Area: 2
• Skyline Ridge OSP

Months:

• Mar.: 3
• Apr.: 0
• May: 3
• Jun.: 2

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Not all sites agree about the scientific name:

• Marah oregana → iNaturalist – Calflora – Jepson eFlora – FNA
• Marah oreganus → CalPhotos

Bay Area species: iNaturalist – Calflora