Corydalis scouleri |
Corydalis caseana |
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Scouler's corydalis, Scouler's fumewort, western corydalis |
Brandegee's fumewort, Case's corydalis, fitweed, Sierra corydalis, Sierra fumewort |
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Habit | Plants perennial, from large, fleshy rhizomes. | Plants perennial, glaucous, from large, fleshy roots. | ||||||||||||||||
Stems | 1 or more, mostly 5-10 dm. |
1-several, 10-15 dm or more. |
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Leaves | ca. 3, compound, 10 cm or more; blade with 3 orders of leaflets and lobes; ultimate lobes broadly elliptic or less commonly ovate to obovate with rounded apex, sometimes narrowly elliptic with acute apex, 1-8 × 0.5-4 cm, minutely apiculate. |
ca. 5, compound, to 10 dm; blade with 2-4 orders of leaflets and lobes; ultimate lobes of proximal cauline leaves narrowly to broadly elliptic, 1-5 cm, apiculate. |
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Inflorescences | axillary or terminal, racemose or paniculate, 15-35-flowered on primary axis; bracts inconspicuous, proximal bracts narrowly elliptic, distal linear and much reduced. |
paniculate, 50 or more flowers on primary axis; bracts inconspicuous, linear or narrowly elliptic, rarely wider, proximal bracts ca. 10 mm, distal greatly reduced. |
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Flowers | erect; pedicel 2-5 mm; sepals caducous, ovate to broadly lanceolate, 1-2 mm, margins lacerate or dentate; petals light to deep pink; spurred petal usually somewhat curved, 20-25 mm, spur lanceoloid, 14-20 mm, crest well developed, usually exceeding petal apices, marginal wing absent; unspurred outer petal boat-shaped, 12-15 mm; inner petals not tipped deep red or purple, usually 9-11 mm, blade much wider at apex, claw slender, equaling blade in length; nectariferous spur 1/2-2/3 length of petal spur, bent or hooked at apex; style ca. 3 mm; stigma roughly triangular, with 2 apical and 2 lateral papillae. |
ascending or spreading; pedicel 3-5 mm; sepals persistent, round and irregularly dentate to ovate, lunate, or attenuate-lanceolate with broad, sometimes lobed base, 2-3 mm; petals light pink to white, inner ones tipped reddish purple; spurred petal often incurved, 16-25 mm, spur tapered or not, 9-16 mm, apex obtuse, crest absent, inconspicuous, or extending into beak beyond petal apices, marginal wing narrow to broad, conspicuous; unspurred outer petal 10-15 mm; inner petals 7-12 mm, claw 3-5 mm; nectariferous spur 1/2-3/4 length of petal spur; style 3-4 mm; stigma roughly rectangular, with 8 papillae. |
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Capsules | reflexed, obovoid, 10-15 × 4-5 mm. |
reflexed, ellipsoid, 10-15 × ca. 3-5 mm. |
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Seeds | ca. 3.5 mm diam., with numerous small protuberances. |
ca. 2.5 mm diam., with numerous minute protuberances. |
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2n | = ca. 130. |
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Corydalis scouleri |
Corydalis caseana |
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Phenology | Flowering mid spring–early summer. | |||||||||||||||||
Habitat | Moist, shady woods, particularly along streams | |||||||||||||||||
Elevation | 0-1100 m (0-3600 ft) | |||||||||||||||||
Distribution |
OR; WA; BC
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CA; CO; ID; NM; OR; UT
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Discussion | Corydalis scouleri is restricted to cool, wet habitats from northwestern Oregon northward to Vancouver Island. It is most easily distinguished from Corydalis caseana by the usually highly developed crests and absence of wings on its outer petals. The stigma is essentially triangular (versus rectangular in C. caseana), and the capsule shape (typically obovoid) is rarely approached in C. caseana. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Subspecies 5 (5 in the flora). Significant livestock losses have been caused by ingestion of Corydalis caseana, which is palatable to both cattle and sheep, despite the toxicity. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 3. | FNA vol. 3. | ||||||||||||||||
Parent taxa | Fumariaceae > Corydalis | Fumariaceae > Corydalis | ||||||||||||||||
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Subordinate taxa | ||||||||||||||||||
Name authority | Hooker: Fl. Bor.-Amer. 1: 36, plate 14. (1829) | A. Gray: Proc. Amer. Acad. Arts 10: 69. (1874) | ||||||||||||||||
Web links |