Jepson eFlora
Key to families | Table of families and genera

Key to Hesperocyparis

View taxon page for Hesperocyparis

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

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

Contact/Feedback

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].
We encourage links to these pages, but the content may not be downloaded for reposting, repackaging, redistributing, or sale in any form, without written permission from The Jepson Herbarium.