Jepson eFlora
Key to families | Table of families and genera

Key to Marah

View taxon page for Marah

1. Corolla rotate, yellow-green to cream or white; ovary, fruit ± spheric, prickles sparse to ± dense, ± stiff, unhooked ..... M. fabacea

1' Corolla ± cup-shaped, white; ovary, fruit generally not spheric, prickles sparse to dense, stiff or flexible, hooked or not

2. Staminate flowers generally < 8 mm wide; herbage glaucous; ovary, fruit ± spheric, prickles sparse to dense, flexible, generally hooked; seeds 1–4, ± spheric ..... M. watsonii

2' Staminate flowers generally > 8 mm wide; herbage not glaucous; ovary, fruit ovate to oblong or tapered to beak, prickles generally dense, stiff or flexible, unhooked; seeds generally 3–24, disk-shaped to ovoid or oblong

3. Ovary, fruit ± spheric, tapered to beak, often striped dark green, prickles sparse to dense, flexible; seeds generally 3–6, disk-shaped, ± flat — Northwestern California, San Francisco Bay Area ..... M. oregana

3' Ovary, fruit oblong, generally not tapered to beak, not striped green, prickles ± dense, stiff; seeds generally > 6, ovoid to oblong, occasionally flat at 1 end

4. Corolla deeply cup-shaped; seeds flat at 1 end; c&s Sierra Nevada Foothills, Tehachapi Mountain Area ..... M. horrida

4' Corolla shallowly cup-shaped; seeds not flat at 1 end; Southwestern California, Sonoran Desert ..... M. macrocarpa

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Citation for the whole project: Jepson Flora Project (eds.) [year] Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html [accessed on month, day, year]
Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on [month, day, year].
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