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Hypericum calycinum

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 calycinum L.
Habit: Evergreen shrub, 20--60 cm, from creeping stolons. Stem: erect, 1 or few-branched. Leaf: petiole 0--2 mm; blade 4.5--10 cm, oblong to narrow-ovate, gland-dotted or -streaked. Inflorescence: flowers 1(3) per stem. Flower: sepals 10--20 mm, unequal, elliptic to obovate, tip hooded; petals 25--40 mm, obovate to oblanceolate, yellow; stamens 90--120 per cluster, anthers red; styles 12--20 mm. Fruit: 10--20 mm, ovoid. Seed: 1.5--2 mm, red-brown, surface finely netted.
Ecology: Shaded wildland-urban interface; Elevation: < 1040 m. Bioregional Distribution: NCoRO, c SNH, CCo, SnFrB; Distribution Outside California: native to Turkey. Flowering Time: Jun--Nov Note: Ornamental, occasional escape from cultivation.
eFlora Treatment Author: Robert E. Preston & Jennifer Talbot
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Citation for this treatment: Robert E. Preston & Jennifer Talbot 2016. Hypericum calycinum, 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.

Hypericum calycinum
click for enlargement
© 2011 Barry Breckling
Hypericum calycinum
click for enlargement
© 2011 Barry Breckling
Hypericum calycinum
click for enlargement
© 2011 Barry Breckling

More photos of Hypericum calycinum in CalPhotos

Geographic subdivisions for Hypericum calycinum:
NCoRO, c SNH, CCo, SnFrB;
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.