Jeffersonia diphylla

(Linnaeus) Persoon

Syn. Pl. 1: 418. 1805

Common names: Twinleaf rheumatism-root
EndemicIllustrated
Basionyms: Podophyllum diphyllum Linnaeus Sp. Pl. 1: 505. 1753
Treatment appears in FNA Volume 3.
Leaves: petiole slender, erect, 9-25 cm at anthesis, maturing to 18-43 cm. Leaf blade 2-foliolate, often with minute apiculation between leaflets; leaflets 1.2-4 × 0.6-2.5 cm at anthesis, maturing to 6-13 × 3-7 cm, lobes rounded to acute. Scapes 9-33 cm, frequently taller than petioles at anthesis. Flowers: sepals elliptic to obovate, 7-15 × 4-6 mm; petals white, elliptic to obovate, 11-22 × 9-12 mm; stamens 6-12 mm; filaments 2-3 mm; anthers 4-9 × 1-1.5 mm; ovaries 6-11 × 3-7 mm. Fruits 18-38 × 8-17 mm, leathery, opening transversely, apical quarter resembling lid, becoming reflexed. Seeds oblong, 4-7 × 2 mm; aril laciniate, attached at adaxial side of hilum. 2n = 12.

Phenology: Flowering early spring; fruiting spring.
Habitat: Rich moist woods to semiopen rocky slopes and outcrops, usually over limestone or other calcareous rocks
Elevation: 100-800 m

Distribution

V3 1012-distribution-map.gif

Ont., Ala., Ga., Ill., Ind., Iowa, Ky., Md., Mich., Minn., N.Y., N.C., Ohio, Pa., Tenn., Va., W.Va., Wis.

Discussion

Plants of Jeffersonia diphylla were used medicinally by Native Americans for treatment of dropsy, gravel and urinary ailments, and for gall and diarrhea, and in poultices for sores and ulcers (D. E. Moermann 1986).

Selected References

None.

Lower Taxa

None.

Facts about "Jeffersonia diphylla"
AuthorLisa O'Rourke George +
Authority(Linnaeus) Persoon +
BasionymsPodophyllum diphyllum +
Common nameTwinleaf + and rheumatism-root +
DistributionOnt. +, Ala. +, Ga. +, Ill. +, Ind. +, Iowa +, Ky. +, Md. +, Mich. +, Minn. +, N.Y. +, N.C. +, Ohio +, Pa. +, Tenn. +, Va. +, W.Va. + and Wis. +
Elevation100-800 m +
HabitatRich moist woods to semiopen rocky slopes and outcrops, usually over limestone or other calcareous rocks +
IllustrationPresent +
Illustration copyrightFlora of North America Association +
IllustratorJohn Myers +
PhenologyFlowering early spring + and fruiting spring. +
Publication titleSyn. Pl. +
Publication year1805 +
ReferenceNone +
Source xmlhttps://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse grained fna xml/V3/V3 1012.xml +
Special statusEndemic + and Illustrated +
Taxon familyBerberidaceae +
Taxon nameJeffersonia diphylla +
Taxon parentJeffersonia +
Taxon rankspecies +
VolumeVolume 3 +