(A.DC.) A.E.Murray
Betulaceae
The California hazel ( Corylus cornuta subsp. californica ) is most often treated as a variey of the northern species Corylus cornuta . The two may not be very closely related, however, differing conspicuously in habit, leaf shape, pubescence, the presence of glandular hairs, form and size of the involucre, habitat, phytogeography, and various other features. A thorough taxonomic study of this group should be undertaken[
270
- Title
- Flora of N. America
- Publication
- Author
- Website
- http://flora.huh.harvard.edu/fna/
- Publisher
- Year
- 0
- ISBN
- Description
- An on-line version of the flora with an excellent description of the plant including a brief mention of plant uses.
].
Corylus californica (A.DC.) A.Heller
Corylus rostrata californica A.DC.
Corylus rostrata tracyi Jeps.
Common Name: California Hazel
No Image.
General Information
Corylus cornuta californica is an open, spreading deciduous shrub or tree, usually with several trunks; it usually grows up to 8 metres tall, occasionally reaching 15 metres.The plant can sucker to form thickets[
270
- Title
- Flora of N. America
- Publication
- Author
- Website
- http://flora.huh.harvard.edu/fna/
- Publisher
- Year
- 0
- ISBN
- Description
- An on-line version of the flora with an excellent description of the plant including a brief mention of plant uses.
,
277
- Title
- Plants Database
- Publication
- Author
- Website
- http://plants.usda.gov/java/factSheet
- Publisher
- United States Department of Agriculture
- Year
- 0
- ISBN
- Description
- An online database with an excellent collection of fact sheets about native N. American plants.
].
The plant is harvested from the wild for local use as a food and source of materials.
Known Hazards
None known
Botanical References
11
- Title
- Trees and Shrubs Hardy in Great Britain. Vol 1 - 4 and Supplement.
- Publication
- Author
- Bean. W.
- Publisher
- Murray
- Year
- 1981
- ISBN
- -
- Description
- A classic with a wealth of information on the plants, but poor on pictures.
,
71
- Title
- A California Flora.
- Publication
- Author
- Munz P.A. & Keck D.D.
- Publisher
- University of California Press; Los Angeles
- Year
- 1959
- ISBN
- -
- Description
- An excellent flora but no pictures. Not for the casual reader.
,
200
- Title
- The New RHS Dictionary of Gardening. 1992.
- Publication
- Author
- Huxley. A.
- Publisher
- MacMillan Press
- Year
- 1992
- ISBN
- 0-333-47494-5
- Description
- Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
Range
Western N. America - southern British Columbia, Washington, Oregon, California
Habitat
Damp rocky slopes and stream banks in coastal mountain ranges; at elevations from 1,000 - 2,500 metres[
270
- Title
- Flora of N. America
- Publication
- Author
- Website
- http://flora.huh.harvard.edu/fna/
- Publisher
- Year
- 0
- ISBN
- Description
- An on-line version of the flora with an excellent description of the plant including a brief mention of plant uses.
]
Properties
Edibility Rating | ![]() ![]() ![]() |
Other Uses Rating | ![]() ![]() |
Habit | Deciduous Shrub |
Height | 8.00 m |
Pollinators | Wind |
Self-fertile | Yes |
Cultivation Status | Wild |
Cultivation Details
An easily grown plant, it succeeds in most soils, but is in general more productive of seeds when grown on soils of moderate fertility[
11
- Title
- Trees and Shrubs Hardy in Great Britain. Vol 1 - 4 and Supplement.
- Publication
- Author
- Bean. W.
- Publisher
- Murray
- Year
- 1981
- ISBN
- -
- Description
- A classic with a wealth of information on the plants, but poor on pictures.
,
200
- Title
- The New RHS Dictionary of Gardening. 1992.
- Publication
- Author
- Huxley. A.
- Publisher
- MacMillan Press
- Year
- 1992
- ISBN
- 0-333-47494-5
- Description
- Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
]. It does less well in rich heavy soils or poor ones[
11
- Title
- Trees and Shrubs Hardy in Great Britain. Vol 1 - 4 and Supplement.
- Publication
- Author
- Bean. W.
- Publisher
- Murray
- Year
- 1981
- ISBN
- -
- Description
- A classic with a wealth of information on the plants, but poor on pictures.
,
63
- Title
- Nuts.
- Publication
- Author
- Howes. F. N.
- Publisher
- Faber
- Year
- 1948
- ISBN
- -
- Description
- Rather old but still a masterpiece. Has sections on tropical and temperate plants with edible nuts plus a section on nut plants in Britain. Very readable.
]. Does well in a loamy soil[
11
- Title
- Trees and Shrubs Hardy in Great Britain. Vol 1 - 4 and Supplement.
- Publication
- Author
- Bean. W.
- Publisher
- Murray
- Year
- 1981
- ISBN
- -
- Description
- A classic with a wealth of information on the plants, but poor on pictures.
]. Very suitable for an alkaline soil[
11
- Title
- Trees and Shrubs Hardy in Great Britain. Vol 1 - 4 and Supplement.
- Publication
- Author
- Bean. W.
- Publisher
- Murray
- Year
- 1981
- ISBN
- -
- Description
- A classic with a wealth of information on the plants, but poor on pictures.
], but it dislikes very acid soils[
17
- Title
- Flora of the British Isles.
- Publication
- Author
- Clapham, Tutin and Warburg.
- Publisher
- Cambridge University Press
- Year
- 1962
- ISBN
- -
- Description
- A very comprehensive flora, the standard reference book but it has no pictures.
]. Plants are fairly wind tolerant[
1
- Title
- RHS Dictionary of Plants plus Supplement. 1956
- Publication
- Author
- F. Chittendon.
- Publisher
- Oxford University Press
- Year
- 1951
- ISBN
- -
- Description
- Comprehensive listing of species and how to grow them. Somewhat outdated, it has been replaced in 1992 by a new dictionary (see [200]).
,
11
- Title
- Trees and Shrubs Hardy in Great Britain. Vol 1 - 4 and Supplement.
- Publication
- Author
- Bean. W.
- Publisher
- Murray
- Year
- 1981
- ISBN
- -
- Description
- A classic with a wealth of information on the plants, but poor on pictures.
].
Members of this genus bear transplanting well and can be easily moved even when relatively large[
11
- Title
- Trees and Shrubs Hardy in Great Britain. Vol 1 - 4 and Supplement.
- Publication
- Author
- Bean. W.
- Publisher
- Murray
- Year
- 1981
- ISBN
- -
- Description
- A classic with a wealth of information on the plants, but poor on pictures.
].
California hazelnut does well in full sun to full shade, and prefers moist but well-drained, loamy, acid soils with plenty of
organic matter; it tolerates clay but not saturated soils. Plants are winter hardy to 0°F, and sprout readily from the root crown after top-kill by fire or other disturbance. It typically occupies damp rocky slopes and stream banks in the understory of coniferous or mixed hardwood forests at elevations up to 8000 feet in zones with mean annual precipitation of 14 to 100 inches[
277
- Title
- Plants Database
- Publication
- Author
- Website
- http://plants.usda.gov/java/factSheet
- Publisher
- United States Department of Agriculture
- Year
- 0
- ISBN
- Description
- An online database with an excellent collection of fact sheets about native N. American plants.
].
Edible Uses
Seed - raw or cooked[
177
- Title
- Plants for Human Consumption.
- Publication
- Author
- Kunkel. G.
- Publisher
- Koeltz Scientific Books
- Year
- 1984
- ISBN
- 3874292169
- Description
- An excellent book for the dedicated. A comprehensive listing of Latin names with a brief list of edible parts.
]. Eaten fresh or preserved for winter use[
183
- Title
- Cornucopia - A Source Book of Edible Plants.
- Publication
- Author
- Facciola. S.
- Publisher
- Kampong Publications
- Year
- 1990
- ISBN
- 0-9628087-0-9
- Description
- Excellent. Contains a very wide range of conventional and unconventional food plants (including tropical) and where they can be obtained (mainly N. American nurseries but also research institutes and a lot of other nurseries from around the world.
]. The seed ripens in mid to late autumn and will probably need to be protected from squirrels[
K
- Title
- Plants for a Future
- Author
- Ken Fern
- Description
- Notes from observations, tasting etc at Plants For A Future and on field trips.
]. When kept in a cool place, and not shelled, the seed should store for at least 12 months[
K
- Title
- Plants for a Future
- Author
- Ken Fern
- Description
- Notes from observations, tasting etc at Plants For A Future and on field trips.
].
An edible oil is obtained from the seed.
Medicinal
The nuts’ milk was used to cure coughs and colds, to heal cuts, and as an astringent[
277
- Title
- Plants Database
- Publication
- Author
- Website
- http://plants.usda.gov/java/factSheet
- Publisher
- United States Department of Agriculture
- Year
- 0
- ISBN
- Description
- An online database with an excellent collection of fact sheets about native N. American plants.
].
Other Uses
A fibre is obtained from the inner bark and is used to make paper[
189
- Title
- Plant Fibres for Papermaking.
- Publication
- Author
- Bell. L. A.
- Publisher
- Liliaceae Press
- Year
- 1988
- ISBN
- 0962507628
- Description
- A good practical section on how to make paper on a small scale plus details of about 75 species (quite a few of them tropical) that can be used.
]. The branches are removed in the autumn, the leaves removed and the branches steamed then the fibre is removed[
189
- Title
- Plant Fibres for Papermaking.
- Publication
- Author
- Bell. L. A.
- Publisher
- Liliaceae Press
- Year
- 1988
- ISBN
- 0962507628
- Description
- A good practical section on how to make paper on a small scale plus details of about 75 species (quite a few of them tropical) that can be used.
]. The fibres are cooked for two hours with lye and then put through a blender[
189
- Title
- Plant Fibres for Papermaking.
- Publication
- Author
- Bell. L. A.
- Publisher
- Liliaceae Press
- Year
- 1988
- ISBN
- 0962507628
- Description
- A good practical section on how to make paper on a small scale plus details of about 75 species (quite a few of them tropical) that can be used.
]. It makes a brown paper[
189
- Title
- Plant Fibres for Papermaking.
- Publication
- Author
- Bell. L. A.
- Publisher
- Liliaceae Press
- Year
- 1988
- ISBN
- 0962507628
- Description
- A good practical section on how to make paper on a small scale plus details of about 75 species (quite a few of them tropical) that can be used.
]. The fibre is also used for cordage[
189
- Title
- Plant Fibres for Papermaking.
- Publication
- Author
- Bell. L. A.
- Publisher
- Liliaceae Press
- Year
- 1988
- ISBN
- 0962507628
- Description
- A good practical section on how to make paper on a small scale plus details of about 75 species (quite a few of them tropical) that can be used.
].
The roots can be used to make a bluish dye[
277
- Title
- Plants Database
- Publication
- Author
- Website
- http://plants.usda.gov/java/factSheet
- Publisher
- United States Department of Agriculture
- Year
- 0
- ISBN
- Description
- An online database with an excellent collection of fact sheets about native N. American plants.
].
The long, flexible shoots can be twisted into ropes or used as the warp in basketry[
277
- Title
- Plants Database
- Publication
- Author
- Website
- http://plants.usda.gov/java/factSheet
- Publisher
- United States Department of Agriculture
- Year
- 0
- ISBN
- Description
- An online database with an excellent collection of fact sheets about native N. American plants.
].
The wood was fashioned into miscellaneous small items such as spoons[
277
- Title
- Plants Database
- Publication
- Author
- Website
- http://plants.usda.gov/java/factSheet
- Publisher
- United States Department of Agriculture
- Year
- 0
- ISBN
- Description
- An online database with an excellent collection of fact sheets about native N. American plants.
].
Propagation
Seed - best sown as soon as it is harvested in autumn in a cold frame[
164
- Title
- Growing from Seed. Volume 4.
- Publication
- Author
- Bird. R. (Editor)
- Publisher
- Thompson and Morgan.
- Year
- 1990
- ISBN
- -
- Description
- Very readable magazine with lots of information on propagation. A good article on Yuccas, one on Sagebrush (Artemesia spp) and another on Chaerophyllum bulbosum.
]. Germinates in late winter or spring. Stored seed should be pre-soaked in warm water for 48 hours and then given 2 weeks warm followed by 3 - 4 months cold stratification[
164
- Title
- Growing from Seed. Volume 4.
- Publication
- Author
- Bird. R. (Editor)
- Publisher
- Thompson and Morgan.
- Year
- 1990
- ISBN
- -
- Description
- Very readable magazine with lots of information on propagation. A good article on Yuccas, one on Sagebrush (Artemesia spp) and another on Chaerophyllum bulbosum.
]. Germinates in 1 - 6 months at 20°c[
164
- Title
- Growing from Seed. Volume 4.
- Publication
- Author
- Bird. R. (Editor)
- Publisher
- Thompson and Morgan.
- Year
- 1990
- ISBN
- -
- Description
- Very readable magazine with lots of information on propagation. A good article on Yuccas, one on Sagebrush (Artemesia spp) and another on Chaerophyllum bulbosum.
]. When large enough to handle, prick the seedlings out into individual pots and grow them on in a cold frame or sheltered place outdoors for their first winter. Plant them out into their permanent positions in late spring or early summer[
K
- Title
- Plants for a Future
- Author
- Ken Fern
- Description
- Notes from observations, tasting etc at Plants For A Future and on field trips.
].
Layering in autumn. Easy, it takes about 6 months[
78
- Title
- Propagation of Trees, Shrubs and Conifers.
- Publication
- Author
- Sheat. W. G.
- Publisher
- MacMillan and Co
- Year
- 1948
- ISBN
- -
- Description
- A bit dated but a good book on propagation techniques with specific details for a wide range of plants.
,
200
- Title
- The New RHS Dictionary of Gardening. 1992.
- Publication
- Author
- Huxley. A.
- Publisher
- MacMillan Press
- Year
- 1992
- ISBN
- 0-333-47494-5
- Description
- Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
].
Division of suckers in early spring. Very easy, they can be planted out straight into their permanent positions.
Cite as: Temperate Plants Database, Ken Fern. temperate.theferns.info. 2024-05-21. <temperate.theferns.info/viewtropical.php?id=Corylus+cornuta+californica>
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