Jepson eFlora
Key to families | Table of families and genera

Key to Hesperocyparis

View taxon page for Hesperocyparis

1. Ultimate 2 orders of shoots or branches in 1 plane; large shrub; resin copious, sticky when fresh ..... H. macnabiana

1' Ultimate 2 orders of shoots or branches in 3-dimensions; generally tree (except generally Hesperocyparis forbesii); resin not copious, not sticky

2. Leaf glands or pits on ultimate branches, resin on leaf glands 0 or not

3. Resin ± 0 on leaf glands on ultimate branches; Peninsular Ranges

4. Multi-trunked shrub to small tree; leaf not glaucous, foliage not gray-green ..... H. forbesii

4' Single-trunked tree; leaf glaucous, foliage gray-green ..... H. stephensonii

3' Resin generally on leaf glands on ultimate branches; n of Southwestern California

5. Ultimate branches < 1 mm diam; seed cones generally < 20 mm diam; Klamath Ranges, High Cascade Range, n High Sierra Nevada, Modoc Plateau ..... H. bakeri

5' Ultimate branches > 1 mm diam; seed cones generally > 20 mm diam; s Sierra Nevada ..... H. nevadensis

2' Leaf glands or pits ± 0 on ultimate branches, resin on leaf glands 0 (except Hesperocyparis sargentii in Santa Barbara Co.)

6. Crown asymmetric, often open, flat-topped to widely conic in age; seed cones 20–32(38) mm; outside native range widely planted, naturalized ..... H. macrocarpa

6' Crown symmetric, often dense, generally pyramidal in age; seed cones (10)12–27(35) mm; outside native range not widely planted, not naturalized

7. Foliage dull, dusty to gray-green, glaucous or not; on serpentine; North Coast Ranges, San Francisco Bay Area, South Coast Ranges ..... H. sargentii

7' Foliage bright to dark green, not glaucous; not on serpentine; North Coast, Central Coast, San Francisco Bay Area

8. Plant 1–2 m on sterile soil, 10–20(50) m on rich soil; foliage dark dull green; seed not glaucous; s North Coast (Mendocino, Sonoma cos.) ..... H. pygmaea

8' Plant 6–10(15) m; foliage yellow-green or light bright to deep green; seed glaucous or not; Central Coast, San Francisco Bay Area

9. Plant 5–7 m; seed cones (10)14–20 mm; ultimate branches 0.8–1.1 mm diam; Central Coast (Monterey Peninsula) ..... H. goveniana

9' Plant 6–10(15) m; seed cones 16–30(35) mm; ultimate branches 0.9–1.2 mm diam; San Francisco Bay Area (Santa Cruz Mtns) ..... H. abramsiana

10. Seed cones (14)16–25 mm, 14–22 mm diam; Santa Cruz Co. ..... var. abramsiana

10' Seed cones 22–32(35) mm, 22–31 mm diam; San Mateo Co. ..... var. butanoensis

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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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