Jepson eFlora
Key to families | Table of families and genera

Key to Ephedra

View taxon page for Ephedra

1. Leaves, cone bracts generally 3 per node; seed cones sessile

2. Uppermost bud thorn-like; leaf sheath persistent, fibrous ..... E. trifurca

2' Uppermost bud narrowed but not thorn-like; leaf sheath deciduous, not fibrous

3. Seed not beaked; twig yellow-green in youth; leaf base in age recurved, swollen ..... E. californica

3' Seed beaked; twig gray-green in youth; leaf base in age not recurved, not swollen ..... E. funerea

1' Leaves, cone bracts generally 2 per node; seed cones sessile or stalked

4. Distal bracts of seed cone fused >= 2/3, fleshy at maturity ..... E. foeminea

4' Distal bracts of seed cone free or fused < 1/3, scarious at maturity

5. Seed generally 1; seed cone stalk <= 2 mm ..... E. aspera

5' Seeds generally 2; seed cone stalk <= 11(50) mm

6. Twig pale green, glaucous in youth; leaf base gray, deciduous; bracts of seed cone broadly ovate ..... E. nevadensis

6' Twig bright- to yellow-green in youth; leaf base brown, persistent; bracts of seed cone elliptic ..... E. viridis

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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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