Jepson eFlora: Taxon page
Vascular Plants of California
Key to families | Table of families and genera
Previous taxon Index to accepted names and synonyms:
| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
Next taxon


Notholithocarpus densiflorus var. densiflorus


Higher Taxonomy
Family: FagaceaeView DescriptionDichotomous Key
Common Name: OAK FAMILY
Habit: Shrub, tree, evergreen or not; monoecious. Leaf: simple, alternate, petioled; margin entire to lobed; stipules small, generally deciduous. Staminate Inflorescence: catkin or stiff spike, many-flowered. Pistillate Inflorescence: 1--few-flowered, generally above staminate inflorescence; involucre bracts many, generally overlapping, flat or cylindric. Staminate Flower: calyx generally 4--6-lobed, minute; petals 0; stamens 4--12+. Pistillate Flower: calyx generally 6-lobed, minute; petals 0; ovary inferior, style branches generally 3. Fruit: 1 nut subtended, partly enclosed by scaly, cup-like involucre or 1--3 nuts subtended, enclosed by spiny, bur-like involucre; mature years 1--2. Seed: generally 1.
Genera In Family: 7 genera, +- 900 species: generally northern hemisphere. Note: Wood of Quercus critical for pre-20th century ship-building, charcoal for metallurgy; some now supply wood (Fagus, Quercus), cork (Quercus suber), food (Castanea, chestnut). Lithocarpus densiflorus moved to Notholithocarpus.
eFlora Treatment Author: John M. Tucker, except as noted
Scientific Editor: Thomas J. Rosatti, Bruce G. Baldwin.
Genus: NotholithocarpusView Description 

Common Name: TAN OAK, TANBARK OAK

Species In Genus: 1 sp.: western North America. Etymology: (Greek: false Lithocarpus) Note: Molecular studies indicate closer relationship with Castanea, Castanopsis, Quercus than with Lithocarpus, from which it is now segregated.
eFlora Treatment Author: John M. Tucker
Reference: Manos et al. 2008 Madroño 55:181--190
Species: Notholithocarpus densiflorusView DescriptionDichotomous Key


Habit: Shrub, tree < 30(45) m, evergreen; trunk bark gray-brown. Leaf: petioles 10--25 mm; blade 3--14 cm, oblong to +- ovate, adaxially sparsely stellate-hairy, +- glabrous in age, abaxially fine-woolly, in age +- glabrous, base +- rounded, tip obtuse, margin entire to serrate; stipules early-deciduous. Staminate Inflorescence: spike, stiff, spreading to erect, many-flowered, dense. Pistillate Inflorescence: below staminate inflorescence on same or separate stalk, 1-flowered. Staminate Flower: sepals 5--6, minute; stamens 10--12. Fruit: mature year 2; nut 1, 20--35 mm, ovoid to +- spheric, partly enclosed by cup-like involucre (cup), remnants of perianth and style persistent as small point at tip; cup (1.5)2--3 cm diam, saucer-shaped, scales slender, +- tapered, reflexed to spreading.

Notholithocarpus densiflorus (Hook. & Arn.) Manos, C.H. Cannon & S. Oh var. densiflorus
NATIVE
Leaf: 4--14 cm, 12--40 mm wide.
Ecology: Redwood, mixed-evergreen forest; Elevation: < 1500 m. Bioregional Distribution: NW, CaR, SN, CW, WTR; Distribution Outside California: southern Oregon. Flowering Time: Jun--Oct
Synonyms: Lithocarpus densiflorus (Hook. & Arn.) Rehder var. densiflorus
Jepson eFlora Author: John M. Tucker
Reference: Manos et al. 2008 Madroño 55:181--190
Jepson Online Interchange

Previous taxon: Notholithocarpus densiflorus
Next taxon: Notholithocarpus densiflorus var. echinoides

Name Search

Botanical illustration including Notholithocarpus densiflorus var. densiflorus

botanical illustration including Notholithocarpus densiflorus var. densiflorus

Contact/Feedback

Citation for this treatment: John M. Tucker 2012, Notholithocarpus densiflorus var. densiflorus, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=91776, accessed on October 18, 2019.

Citation for the whole project: Jepson Flora Project (eds.) 2019, Jepson eFlora, http://ucjeps.berkeley.edu/eflora/, accessed on October 18, 2019.

Notholithocarpus densiflorus var. densiflorus
click for enlargement
© 2008 Keir Morse
Notholithocarpus densiflorus var. densiflorus
click for enlargement
© 2008 Keir Morse
Notholithocarpus densiflorus var. densiflorus
click for enlargement
© 2008 Keir Morse
Notholithocarpus densiflorus var. densiflorus
click for enlargement
© 2016 Keir Morse
Notholithocarpus densiflorus var. densiflorus
click for enlargement
© 2005 George W. Hartwell
Notholithocarpus densiflorus var. densiflorus
click for enlargement
© 2008 Keir Morse

More photos of Notholithocarpus densiflorus var. densiflorus in CalPhotos



Geographic subdivisions for Notholithocarpus densiflorus var. densiflorus:
NW, CaR, SN, CW, WTR
MAP CONTROLS
1. You can change the display of the base map and layers by clicking on the layer control box in the upper right-hand corner.
2. California county polygons can be turned off and on in the layer control box.
3. Filling of Jepson subdivision polygons can be turned off and on in the layer control box.
4. Moving the cursor over any numbered cluster will show the range boundary of the included specimens (with a blue polygon).
5. Marker clustering can be turned off by clicking this link:      Marker Clustering OFF
WARNING: Turning this off might cause maps with large numbers of specimens to load slowly.
map of distribution 1
(Note: any qualifiers in the taxon distribution description, such as 'northern', 'southern', 'adjacent' etc., are not reflected in the map above, and in some cases indication of a taxon in a subdivision is based on a single collection or author-verified occurence).





 

View elevation by latitude chart


Data provided by the participants of the  Consortium of California Herbaria.
MAP LEGEND
View all CCH records
All markers link to CCH specimen records. The original determination is shown in the popup window.
Blue markers indicate specimens that map to one of the expected Jepson geographic subdivisions (see left map). Purple markers indicate specimens collected from a garden, greenhouse, or other non-wild location.
Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.
READ ABOUT YELLOW FLAGS


CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa, if there are more than 1 infraspecific taxon in CA.
Blue line denotes eFlora flowering time.