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Hypericum scouleri

Higher Taxonomy
Family: HypericaceaeView Description 

Common Name: ST. JOHN'S WORT FAMILY
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 scouleri Hook.
NATIVE
Habit: Perennial herb 2--7 dm, taprooted or rhizomed. Stem: erect, few from base, slender; sterile axillary branches generally < 2 cm. Leaf: 1--3 cm, ovate to elliptic, flat, base +- clasping, margin black-dotted, lower surface obscurely dotted. Inflorescence: flowers generally 3--25 per stem. Flower: sepals 3--4 mm, oblong to ovate, generally obtuse, black-dotted; petals 7--12 mm, obovate, pale to bright yellow, black-dotted; stamens in 3 clusters, anthers black-dotted; styles 3--5 mm. Fruit: 6--7 mm, 3-lobed. Seed: < 1 mm, brown.
Ecology: Wet meadows, streambanks, mesic areas in chaparral, conifer forest; Elevation: < 2940 m. Bioregional Distribution: NW, CaRH, SN, SnFrB, SCoRO, TR, PR, MP; Distribution Outside California: to western Canada, Montana, New Mexico. Flowering Time: Jun--Sep
Synonyms: Hypericum formosum Kunth var. scouleri (Hook.) J.M. Coult.; Hypericum scouleri subsp. scouleri
eFlora Treatment Author: Robert E. Preston & Jennifer Talbot
Jepson Online Interchange

Previous taxon: Hypericum perforatum subsp. perforatum
Next taxon: Juglandaceae

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botanical illustration including Hypericum scouleri

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Citation for this treatment: Robert E. Preston & Jennifer Talbot 2016. Hypericum scouleri, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=28801, accessed on April 28, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on April 28, 2016.


Hypericum scouleri
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© 2014 Neal Kramer
Hypericum scouleri
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© 2001 Gary A. Monroe
Hypericum scouleri
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© 2009 Barry Breckling
Hypericum scouleri
click for enlargement
© 2014 Neal Kramer
Hypericum scouleri
click for enlargement
© 2001 Gary A. Monroe
Hypericum scouleri
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© 2003 Steve Matson

More photos of Hypericum scouleri in CalPhotos


Geographic subdivisions for Hypericum scouleri:
NW, CaRH, SN, SnFrB, SCoRO, TR, PR, MP;
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.
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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).

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Data provided by the participants of the Consortium of California Herbaria.
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CCH collections by month

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