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Vascular Plants of California
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Achlys triphylla subsp. triphylla

Higher Taxonomy
Family: BerberidaceaeView DescriptionDichotomous Key
Habit: Perennial herb, shrub, [tree], generally rhizomed, caudexed or not, glabrous, glaucous, or hairy. Stem: spreading to erect, branched or not. Leaf: simple, 1--3-ternate, or pinnately compound, basal and cauline, generally alternate, deciduous or evergreen, petioled, stipuled. Inflorescence: generally raceme, spike, or panicle, scapose, terminal, or axillary. Flower: generally bisexual, radial; sepals 6--18 or 0, generally in whorls of 3; petals generally 6, in 2 whorls of 3, or 0; stamens 6--12(13), free or fused at base, in 2 whorls or not, anthers dehiscent by flap-like valves or longitudinal slits; ovary superior, chamber 1, ovules generally 1--10, style 1 or 0, stigma flat or spheric. Fruit: berry, capsule, achene [follicle].
Genera In Family: 16 genera, +- 670 species: temperate, tropics worldwide; some cultivated (Berberis, Epimedium, Nandina (heavenly bamboo), Vancouveria). Note: Lower sepals sometimes called "bracteoles," inner petals "staminodes".
eFlora Treatment Author: Michael P. Williams
Scientific Editor: Thomas J. Rosatti.
Genus: AchlysView DescriptionDichotomous Key

Habit: Perennial herb; rhizome scaly; caudex short, erect; wood, especially of roots, often yellow. Leaf: 1--few, basal, long-petioled, 1-ternate; leaflets triangular to fan-shaped, bases tapered. Inflorescence: +- scapose, spike, dense; lateral flowers generally unisexual, terminal bisexual. Flower: perianth 0; stamens (8)9(13), anther valves flap-like, curled inward; ovule 1, style 0, stigma +- flat, furrowed. Fruit: achene, curved, furrowed, brown to red-purple.
Species In Genus: 2 species: western North America, Japan. Etymology: (Greek: thin mist or obscurity, from inconspicuous flowers)
Unabridged Reference: Terabayashi 1981 Bot Mag (Tokyo) 94:141--157
Achlys triphylla (Sm.) DC. subsp. triphylla
Habit: Plant 2--4 dm; rhizome internodes 2.5--5 cm. Inflorescence: 2.5--5 cm. Fruit: 3--4.5 mm. Chromosomes: 2n=12.
Ecology: Moist shaded sites, conifer forest; Elevation: < 1830 m. Bioregional Distribution: NCo, w KR, w NCoRO; Distribution Outside California: to British Columbia. Flowering Time: Apr--Jun Note: Other subsp. in Japan.
Jepson eFlora Author: Michael P. Williams
Unabridged Reference: Terabayashi 1981 Bot Mag (Tokyo) 94:141--157
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Botanical illustration including Achlys triphylla subsp. triphylla

botanical illustration including Achlys triphylla subsp. triphylla


Citation for this treatment: Michael P. Williams 2012, Achlys triphylla subsp. triphylla, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on March 18, 2019.

Citation for the whole project: Jepson Flora Project (eds.) 2019, Jepson eFlora,, accessed on March 18, 2019.

Achlys triphylla subsp. triphylla
click for enlargement
© 2017 Vernon Smith
Achlys triphylla subsp. triphylla
click for enlargement
© 2011 Vernon Smith

More photos of Achlys triphylla subsp. triphylla in CalPhotos

Geographic subdivisions for Achlys triphylla subsp. triphylla:
NCo, w KR, w NCoRO;
Markers link to CCH specimen records. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues. Purple markers indicate specimens collected from a garden, greenhouse, or other non-wild location.
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, if there are more than 1 infraspecific taxon in CA.
Blue line denotes eFlora flowering time.