Overview
Interesting Facts
Common Names
Click on the language to view common names.
Common Names in English:
Squirrel Corn, Squirrel-Corn, Turkey Corn, Turkey-Corn
Common Names in French:
Dicentre Du Canada
Description
Family Papaveraceae
Herbs or subshrubs
, shrubs
, or small trees
, annual
, biennial, or perennial
, scapose
or caulescent
, usually from taproots
, sometimes from rhizomes; sap
clear, white, or colored
, often sticky. Stems leafy or naked, erect
, spreading
, or decumbent
, simple
or branching. Leaves basal and/or cauline, alternate to opposite or whorled
, simple, without stipules, petiolate
or sessile; blade
unlobed or with 1-3 odd-pinnate, subpalmate, or palmate orders
of lobes
. Inflorescences axillary
or terminal
, unifloral or else multifloral and cymiform, racemose, umbelliform, corybiform, or paniculate
, pedunculate
or subsessile
; bracts usually present. Flowers radially symmetric
, pedicellate
or sessile; receptacle sometimes expanded and forming cup
or ring
beneath
calyx (only in Eschscholzia, Meconella, and Platystemon ) ; perianth and androecium sometimes perigynous; sepals caducous
, 2 or 3, distinct
or connate
, usually obovate
; petals distinct, usually obovate, mostly 2 times number of sepals, sometimes more or absent; stamens many or 4-15 (only in Meconella and Canbya ) ; anthers
2-locular; pistil 1, 2-18[-22]-carpellate; ovary 1-2-locular or incompletely to completely multilocular by placental
intrusion; placentas 2 or more, parietal
; style 1 or absent; stigmas or stigma lobes 2-many. Fruits capsular
, dehiscence valvate
, poricidal
, or transverse
, or carpels dissociating and breaking transversely into 1-seeded segments (only in Platystemon ) . Seeds usually many, small, sometimes arillate
or carunculate.
Genera 25-30 (17 genera, 63 species in the flora
) : worldwide, mainly Northern Hemisphere.
According to W. R. Ernst (1962b), Papaveraceae "may be divided
conveniently into four subfamilies." His scheme is followed here, but with the subfamilies taken up in alphabetic order; they seem to be natural groups, but their phylogenetic
interrelationships are not yet clear. Similarly, the evolutionary relationships
within the subfamilies remain ambiguous, and the genera in each are listed alphabetically. Subfamily
Chelidonioideae Ernst includes genera 1-5; subf. Eschscholzioideae Ernst, genera 6-7; subf. Papavaroideae Ernst, genera 8-14; and subf. Platostamenoideae Ernst, genera 15-17.[1]
Genus Dicentra
Herbs, annual
or perennial
, scapose
or caulescent
, from taproots
, bulblets, tubers, or rhizomes. Stems when present erect
, simple
or branching, hollow at maturity. Leaves basal or cauline, compound
; blade
with 2-4 orders
of leaflets
and lobes
, margins
entire, crenate
, or serrate; surfaces glabrous
, sometimes glaucous. Inflorescences axillary
, extra-axillary
, leaf-opposed, or terminal
, unifloral or else multifloral and thyrsoid
, paniculate
, racemose, or corymbose
. Flowers bilaterally symmetric
about each of 2 perpendicular planes
; sepals caducous
; corolla cordate to oblong
in outline; petals coherent or connate
only basally, not spongy
; outer petals both swollen or spurred
basally, usually keeled
apically; inner petals with blade fiddle-, spoon-, or arrowhead-shaped, claw
linear-oblong to oblanceolate
; stamens with nectariferous
tissue
borne on median
filament
in each bundle and sometimes forming spur or loop that projects into swollen base
of adjacent
outer petal; ovary broadly ovoid
or obovoid
to narrowly cylindric
; stigma persistent
, with 2 lobes or apical horns, sometimes also with 2 lateral
papillae. Capsules indehiscent or dehiscent
and 2-valved. Seeds few-many, elaiosome usually present. x
= 8.
Species 20: temperate
North America and eastern Asia.
About 35 isoquinoline alkaloids
have been isolated from Fumariaceae, and such compounds are present in the tissues of all species. Some of these alkaloids have been used medicinally, mostly in the past. The drug complex
corydalis, which contains several alkaloids extracted from the bulblets of Dicentra canadensis and D. cucullaria, has been used as a healing agent in chronic
skin
diseases, as a tonic
and diuretic, and in the treatment of syphilis. The alkaloid bulbocapnine, obtained from all parts of D. canadensis, has been used in the treatment of Ménière's disease and muscular tremors, and as a pre-anaesthetic. Cattle find D. cucullaria and D. canadensis distasteful and usually do not ingest the plants
unless suitable forage
is unavailable
; when they do, however, the toxic
alkaloid cucullarine brings about local anaesthesia, narcosis, convulsions, and death
. A decoction from the rhizome of D. formosa has been used in the Pacific Northwest to expel intestinal worms (D. E. Moerman 1986).
Dicentra spectabilis (Linnaeus) Lemaire is cultivated through much of the flora
area. It was introduced
in Europe only in the middle
of the 19th century, but it has been cultivated for centuries in temperate China and Japan, where it is now so widespread that the limits
of its natural distribution are obscure
. It does not appear to be truly naturalized
in North America, but it may be encountered as a transitory garden relict
or escape
. It differs from D. ochroleuca and D. chrysantha in having rose-purple to pink or sometimes white outer petals, pendent flowers, and reticulate
seeds with elaiosomes.
Berg
, R. Y. 1969. Adaptation and evolution in Dicentra (Fumariaceae), with special reference to seed, fruit, and dispersal mechanism
. Nytt Mag. Bot. 16(1) : 49-75. Fahselt, D. 1970. The anthocyanins of Dicentra (Fumariaceae). Canad. J. Bot. 48(1) : 49-53. Fahselt, D. and M.
Ownbey. 1968. Chromatographic comparison of Dicentra species and hybrids. Amer. J. Bot. 55: 334-345. Stern, K
. R. 1961. Revision
of Dicentra (Fumariaceae). Brittonia 13(1) : 1-57. Stern, K. R. 1962. The use of pollen morphology in the taxonomy of Dicentra. Amer. J. Bot. 49: 362-368. Stern, K. R. 1970. Pollen aperture variation
and phylogeny in Dicentra. Madroño 20: 354-359. Stern, K. R. and M. Ownbey. 1971. Hybridization and cytotaxonomy of Dicentra. Amer. J. Bot. 58(9) : 861-866.[2]
Physical Description
Species Dicentra canadensis
Plants perennial , scapose , from short rootstocks bearing yellow, globose bulblets. Leaves (10-) 14-24(-30) × (4-) 6-14(-18) cm; petiole (5-) 8-16(-22) cm; blade with 4 orders of leaflets and lobes ; abaxial surface glaucous; ultimate lobes linear to linear-elliptic or linear-obovate, (2-) 5-15(-23) × (0.4-) 2-4 mm, usually minutely apiculate . Inflorescences racemose, 3-12-flowered, usually exceeding leaves, (10-) 15-27(-33) cm; bracts ovate , 2-5 × 1-3 mm. Flowers pendent, very fragrant; pedicels (2-) 3-7(-14) mm; sepals triangular to ovate, 2-4 × 1-2 mm, apex acuminate; petals white; outer petals (10-) 12-16(-20) × (2-) 4-5(-8) mm, reflexed portion 3-5 mm; inner petals (10-) 12-15(-18) mm, blade 2-4 mm, claw linear-elliptic, 5-9 mm, crest prominent , ca. 2 mm diam., exceeding apex by ca. 2 mm; filaments of each bundle distinct nearly to base ; nectariferous tissue forming 0.5-1 mm spur oriented vertically; style 4-7 mm; stigma shallowly 2-horned with 2 lateral papillae. Capsules ovoid , attenuate at both ends, (5-) 9-13(-17) × 3-6 mm. Seeds slightly reniform , very obscurely reticulate , elaiosome present. [source]
Flowers: Bloom Period: March. • Flower Color: near white, pale pink, white
Size/Age/Growth
Size: 6-12" tall.
Habitat
Deciduous woods , often among rock outcrops, in rich loam soils; 0-1500 m [3].
Biology
Growth
Culture: Space 9-12" apart.
Soil: Minimum pH: 5.6 • Maximum pH: 7.8
Sunlight: Sun Exposure: Light Shade.
Temperature: Cold Hardiness: 3a, 3b, 4a, 4b, 5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b. (map)
Taxonomy
- Domain:
Eukaryota
(
)
- Whittaker & Margulis,1978
- eukaryotes
- Kingdom:
Plantae
(
)
- Haeckel, 1866
- Plants
- Subkingdom:
Viridaeplantae
(
)
- Cavalier-Smith, 1981
- Phylum:
Tracheophyta
(
)
- Sinnott, 1935 ex Cavalier-Smith, 1998
- Vascular Plants
- Subphylum:
Euphyllophytina
(
)
- Infraphylum:
Radiatopses
(
)
- Kenrick & Crane, 1997
- Class:
Spermatopsida
(
)
- Brongniart, 1843
- Subclass:
Ranunculidae
(
)
- Takhtajan Ex Reveal, 1992
- Superorder:
Ranunculanae
(
)
- Takhtajan Ex Reveal, 1992
- Order:
Ranunculales
(
)
- Dumortier, 1829
- Family:
Papaveraceae
(
)
- Adans., 1763, nom. cons.
- poppies
- Subfamily:
Fumarioideae
(
)
- Subfamily:
Fumarioideae
(
- Family:
Papaveraceae
(
- Order:
Ranunculales
(
- Superorder:
Ranunculanae
(
- Subclass:
Ranunculidae
(
- Class:
Spermatopsida
(
- Infraphylum:
Radiatopses
(
- Subphylum:
Euphyllophytina
(
- Phylum:
Tracheophyta
(
- Subkingdom:
Viridaeplantae
(
- Kingdom:
Plantae
(
Synonyms
Bicuculla canadensis (Goldie) Millspaugh • Corydalis canadensis Goldie • Edinburgh Philos. J. 6: 329. 1822
Notes
Name
Status: Accepted Name
.
Last scrutiny: 15-Mar-2000
Similar Species
Members of the genus Dicentra
ZipcodeZoo has pages for 44 species, subspecies, varieties, forms, and cultivars in this genus:
D. canadensis (Squirrel Corn) · D. cucullaria (Dutchman's Breeches) · D. exima 'Snowflakes' (Bleeding Heart) · D. eximia (Fringed Bleeding Heart) · D. eximia 'Snowflakes' (Turkey Corn) · D. eximia 'Alan Bloom' (Fringed Bleeding Heart) · D. eximia 'Aurora' (Aurora Bleeding Heart) · D. eximia 'Luxuriant' (Luxuriant Bleeding Heart) · D. eximia 'Stuart Boothman' (Stuart Boothman Dwarf Bleeding Heart) · D. formosa (Bleeding Heart) · D. formosa oregana (Pacific Bleeding-Heart) · D. formosa oregona (Pacific Bleeding Heart) · D. formosa 'Adrian Bloom' (Pacific Bleeding Heart) · D. formosa 'Aurora' (Aurora Pacific Bleeding Heart) · D. formosa 'Bacchanal' (Bacchanal Pacific Bleeding Heart) · D. formosa 'Boothman's Variety' (Pacific Bleeding Heart) · D. formosa 'Bountiful' (Pacific Bleeding Heart) · D. formosa 'Langtrees' (Pacific Bleeding Heart) · D. formosa 'Luxuriant' (Bleeding Heart) · D. formosa 'Margery Fish' (Pacific Bleeding Heart) · D. formosa 'Pearl Drops' (Pacific Bleeding Heart) · D. formosa 'Silver Smith' (Pacific Bleeding Heart) · D. formosa 'Snowdrift' (Pacific Bleeding Heart) · D. formosa 'Sweetheart' (Pacific Bleeding Heart) · D. formosa 'Zestful' (Pacific Bleeding Heart) · D. macrantha (Chinese Bleeding Heart) · D. macrocapnos (Bleeding Heart Vine) · D. nevadensis (Sierra Bleeding Heart) · D. pauciflora (Few-Flower Bleedinghearts) · D. peregrina (Dicentra) · D. scandens (Bleeding Heart Vine) · D. scandens 'Athens Yellow' (Yellow Climbing Bleeding Heart) · D. spectabilis 'Alba' (Bleeding Heart) · D. spectabilis 'Gold Heart' (Bleeding Heart) · D. spectabilis 'Rosea' (Bleeding Heart) · D. uniflora (Longhorn Steer's-Head) · D. x 'Luxuriant' (Fern-Leaf Bleeding Heart) · D. 'Bacchanal' (Bacchanal Bleeding Heart) · D. 'Coldham' (Bleeding Heart) · D. 'Ivory Hearts' (Dwarf Bleeding Heart) · D. 'King of Hearts' (Bleeding Heart) · D. 'Luxuriant' (Pacific Bleeding Heart) · D. 'Snowflakes' (Bleeding Heart) · D. 'Snowflake' (Fernleaf Bleeding Heart)
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Further Reading
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- A college text-book of botany; being an enlargement of the author's "Elementary botany." New York: Holt, 1908 [c1905] url p. 706.
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- A practical guide to garden plants, containing descriptions of the hardiest and most beautiful annuals and biennials, hardy herbaceous and bulbous perennials, hardy water and bog plants, flowering and ornamental trees and shrubs, conife London;Longmans, Green, 1901. url .
- A spring flora for high schools, New York, Cincinnati [etc.]American Book Company[c1915] url , .
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Notes
Contributors
- Brands, S.J. (comp.) 1989-present. The Taxonomicon. Universal Taxonomic Services, Zwaag, The Netherlands. Accessed January 10, 2012.
Data Sources
Accessed through GBIF Data Portal November 22, 2007:
- Fairchild Tropical Botanic Garden, Fairchild Tropical Botanic Garden Virtual Herbarium Darwin Core format
- USDA PLANTS, USDA PLANTS Database
- University of Alabama Biodiversity and Systematics, Herbarium
Identifiers
- Biodiversity Heritage Library NamebankID: 2645696
- Catalogue of Life Accepted Name Code: ITS-18943
- Global Biodiversity Information Facility Taxonkey: 13731924
- Globally Unique Identifier: urn:lsid:ipni.org:names:672637-1
- GRIN Nomen Number: 405114
- Integrated Taxonomic Information System (ITIS) Taxonomic Serial Number (TSN): 18943
- International Plant Names Index (IPNI) ID: 672637-1
- Natural Heritage Network Species Identifier: PDFUM04010
- U.S.D.A. Plant Symbol: BICA4
- Zipcode Zoo Species Identifier: 24668
Footnotes
- Robert W. Kiger "Papaveraceae". in Flora of North America Vol. 3. Oxford University Press. Online at EFloras.org. [back]
- Kingsley R. Stern "Dicentra". in Flora of North America Vol. 3. Oxford University Press. Online at EFloras.org. [back]
- "Dicentra canadensis". in Flora of North America Vol. 3. Oxford University Press. Online at EFloras.org. [back]
