|University of California, Berkeley|
Key to families | Table of families and genera
1. Leaf scale-like, < 1 mm
2. Stem canescent, especially at tip, ± red to green, rigid; spike with 1–3(7) fertile internodes; on Acacia, Cercidium, (Larrea), Olneya, Prosopis; < 1200 m ..... P. californicum
2' Stem glabrous, ± green or yellow-green, not rigid; spike with 1(2) fertile internodes; on Calocedrus, Juniperus; 1300–2600 m ..... P. juniperinum
1' Leaf with blade, generally 5–60 mm
3. Leaf length generally > 3 × width, (5)10–25 mm, generally < 20 mm; stem glabrous; spike with generally 1 fertile internode, pistillate 2-flowered; on conifers ..... P. bolleanum
3' Leaf length generally < 1.5 × width, 15–60 mm, generally > 20 mm; stem generally short-hairy, at least at tip; spike with 2–5(7) fertile internodes, pistillate 6–15(20)-flowered; on woody plants except conifers ..... P. leucarpum
4. Leaf <= 6 cm, width <= 5 cm; leaf yellow-green, generally shiny ..... subsp. macrophyllum
4' Leaf <= 3 cm, width <= 2 cm; leaf gray-green, dull ..... subsp. tomentosum
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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