Jepson eFlora: Taxon page
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
Hypericum hookerianum

Higher Taxonomy
Family: HypericaceaeView Description 

Habit: Annual to shrub [tree]. Leaf: cauline, simple, opposite or whorled, often gland-dotted; stipules 0. Inflorescence: cyme, panicle, or flower 1, terminal or axillary. Flower: bisexual, radial; sepals persistent, generally 5, often fused at base, overlapping; petals generally 5, free; stamens generally many, free or +- fused into 3--5 clusters; pistil 1, ovary superior, chambers 1--3[5], placentas generally axile, style branches 3. Fruit: capsule, generally septicidal. Seed: many, small.
Genera In Family: 37 genera, 1610 species: worldwide, largely tropics. Note: Sometimes included in Clusiaceae.
eFlora Treatment Author: Robert E. Preston & Jennifer Talbot
Scientific Editor: Douglas H. Goldman, Bruce G. Baldwin.
Genus: HypericumView DescriptionDichotomous Key

Habit: Annual to shrub, glabrous. Leaf: sessile Inflorescence: generally terminal cymes, bracted. Flower: sepals [4]5; petals [4]5, deciduous or persistent, generally +- yellow; anthers occasionally black-dotted; ovary chambers 1 or 3(5), placentas 3(5), axile or parietal, projecting into chamber.
Species In Genus: +- 450 species: worldwide. Etymology: (Greek name)

Hypericum hookerianum Wight & Arn.
Habit: Evergreen shrub, 3--21 dm. Stem: erect to spreading, many-branched. Leaf: petiole 1--4 mm; blade 25--75 mm, ovate to broadly lanceolate, acute to rounded, glands in short lines or dots. Inflorescence: flowers 1--5 per stem. Flower: sepals erect, 5--10 mm, subequal, obovate to elliptic, rounded; petals 15--30 mm, obovate to elliptic, obtuse to rounded, yellow; stamens 60--80 per cluster, anthers yellow; ovary 5--7 mm, ovoid; styles 2--4 mm. Fruit: 9--17 mm, ovoid. Seed: 0.7--1 mm, dark red-brown.
Ecology: Shaded forest; Elevation: 30 m. Bioregional Distribution: NCo (Mendocino Co.); Distribution Outside California: native to southern Asia. Flowering Time: Jul Note: Ornamental, occasionally escaping from cultivation.
eFlora Treatment Author: Robert E. Preston & Jennifer Talbot
Jepson Online Interchange

Previous taxon: Hypericum concinnum
Next taxon: Hypericum mutilum subsp. mutilum

Name Search


Citation for this treatment: Robert E. Preston & Jennifer Talbot 2016. Hypericum hookerianum, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on May 02, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora,, accessed on May 02, 2016.

Geographic subdivisions for Hypericum hookerianum:
NCo (Mendocino Co.);
Markers link to CCH specimen records. If the markers are obscured, reload the page [or change window size and reload]. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.
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.
View all CCH records

CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa.
Blue line denotes eFlora flowering time.