Jepson eFlora
Key to families | Table of families and genera

Key to Pinaceae

View taxon page for Pinaceae

Jepson Manual glossary definitions can be seen by moving your cursor over words underlined with dots.

1. Leaves in bundles of (1)2–5 (generally 1 in Pinus monophylla, but then ± round in section, vs leaves ± flat under 1'), generally 2.5–35 cm, base in scaly sheath; seed cone bract fused to scale at least basally, included, inconspicuous ..... PINUS

1' Leaves not in bundles, 0.5–9 cm, base not in scaly sheath; seed cone bract generally ± free from scalefused in Abies), exserted or included, conspicuous

2. Twig without persistent, peg-like leaf bases; seed cone erect, scales, bracts deciduous, axis persistent on stem, ultimately falling ..... ABIES

2' Twig with or without persistent, peg-like leaf bases; seed cone pendent, scales, bracts, axis persistent on stem, ultimately falling as unit

3. Twig without persistent, peg-like leaf bases; seed cone 4–20 cm, bracts exserted, 3-toothed or -lobed ..... PSEUDOTSUGA

3' Twig with persistent, peg-like leaf bases; seed cone 1.2–12 cm, bracts included, entire or fringed

4. Leaf tip blunt to acute, persistent base spreading, peg-like; seed cone 5–12 cm ..... PICEA

4' Leaf tip generally blunt, persistent base ascending, wedge or scale-like; seed cone 1.2–7.5 cm ..... TSUGA

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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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