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Corydalis sempervirens
Corydalis sempervirens (L.) Pers.
Rock Harlequin
Fumariaceae (Fumitory Family)
Synonym(s): Capnoides sempervirens
USDA Symbol: COSE5
USDA Native Status: L48 (N), AK (N), CAN (N)
Rock-harlequin or pale corydalis is a delicate, lacy, 12-32 in. biennial with compound leaves divided into many lobes. During its first summer the only foliage is a basal rosette, but in its second year the plant sends up many branched stems, each tipped with bunches of pink and yellow, uniquely tubular flowers. Drooping, sac-like, tubular, pink and yellow flowers in clusters at ends of branched stems bearing intricately divided leaves. The flowers give way to long, narrow seed pods.
The delicate, dangling flowers and bluish-green foliage distinguish this corydalis. A number of other yellow-flowered species occur in eastern North America. Golden Corydalis (C. micrantha), a winter annual or biennial found in fields or along roadsides, has long-spurred flowers about 1/2" (1.5 cm) long and highly divided leaves. A smaller species, Yellow Harlequin (C. flavula), has flowers less than 1/2" (1.5 cm) long and a very short spur. Climbing Fumitory or Allegheny Vine (Adlumia fungosa) is a closely related woodland vine that climbs to 10' (3 m); it has similar foliage and pink flowers very like those of Tall Corydalis and occurs most frequently in the Allegheny Mountains.
Plant Characteristics
Duration: AnnualHabit: Herb
Leaf Arrangement: Alternate
Fruit Type: Capsule
Size Notes: Up to about 32 inches tall.
Bloom Information
Bloom Color: Pink , Yellow , PurpleBloom Time: May , Jun , Jul , Aug , Sep
Distribution
USA: AK , CT , GA , IA , IL , IN , KY , MA , MD , ME , MI , MN , MT , NC , NH , NJ , NY , OH , PA , RI , SC , TN , VA , VT , WI , WVCanada: AB , BC , MB , NB , NL , NS , NT , NU , ON , PE , QC , SK , YT
Native Distribution: Canada and the eastern US as far south as north Georgia and west to Minnnesota; also northwestern Montana.
Native Habitat: Dry woods; rocky ledges; recent clearings
Growing Conditions
Light Requirement: Part ShadeSoil Moisture: Dry
Soil pH: Acidic (pH<6.8)
Soil Description: Poor, dry, gravelly soil.
Conditions Comments: Pale corydalis can become weedy.
Benefit
Use Medicinal: Some Corydalis species have sedative and pain-killing compounds, but many also contain toxic alkaloids. (Kershaw)Conspicuous Flowers: yes
Propagation
Description: Easily propagated from seed sown as soon as ripe. Division is another method of increase.Commercially Avail: yes
Bibliography
Bibref 1294 - The Midwestern Native Garden: Native Alternatives to Nonnative Flowers and Plants An Illustrated Guide (2011) Adelman, Charlotte and Schwartz, Bernard L.Search More Titles in Bibliography
Web Reference
Webref 38 - Flora of North America (2019) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.Webref 23 - Southwest Environmental Information Network (2009) SEINet - Arizona Chapter
Additional resources
USDA: Find Corydalis sempervirens in USDA PlantsFNA: Find Corydalis sempervirens in the Flora of North America (if available)
Google: Search Google for Corydalis sempervirens
Metadata
Record Modified: 2023-02-01Research By: TWC Staff