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Wisteria frutescens

Wisteria frutescens (Photo: Robert H. Mohlenbrock @ USDA-NRCS PLANTS Database / USDA SCS.)

Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Eudicots
Cladus: Core eudicots
Cladus: Rosids
Cladus: Eurosids I
Ordo: Fabales

Familia: Fabaceae
Subfamilia: Faboideae
Tribus: Wisterieae
Genus: Wisteria
Species: Wisteria frutescens
Subspecies: W. f. subsp. frutescens – W. f. subsp. macrostachya
Name

Wisteria frutescens (L.) Poir. in J.B.A.M.de Lamarck, Tabl. Encycl. 3: 674 (1823).
Synonyms

Basionym
Glycine frutescens L., Sp. Pl. 2: 753 (1753).
Homotypic
Phaseoloides frutescens (L.) Kuntze, Revis. Gen. Pl. 1: 201 (1891).
Apios frutescens (L.) Pursh, Fl. Amer. Sept. 2: 474 (1813).
Bradlea frutescens (L.) Britton, Man. Fl. N. States: 549 (1901).
Glycine caerulea Salisb., Prodr. Stirp. Chap. Allerton: 335 (1796).
Kraunhia frutescens (L.) Greene, Pittonia 2: 175 (1891).
Phaseolus frutescens (L.) Eaton & Wright, Man. Bot., ed. 8: 354 (1840).
Thyrsanthus frutescens (L.) Elliott, J. Acad. Nat. Sci. Philadelphia 1: 371 (1818).
Wisteria speciosa Nutt., Gen. N. Amer. Pl. 2: 116 (1818).

Distribution
Native distribution areas:
Wisteria frutescens

Continental: Northern America
Regional: North-Central U.S.A.
Illinois, Iowa, Missouri, Oklahoma.
Regional: Northeastern U.S.A.
Connecticut, Indiana, Massachusetts, Michigan, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, West Virginia.
Regional: South-Central U.S.A.
Texas.
Regional: Southeastern U.S.A.
Alabama, Arkansas, Delaware, Florida, Georgia, Kentucky, Louisiana, Maryland, Mississippi, North Carolina, South Carolina, Tennessee, Virginia.

References: Brummitt, R.K. 2001. TDWG – World Geographical Scheme for Recording Plant Distributions, 2nd Edition
References
Primary references

Poiret, J.L.M. 1823. Tableau Encyclopedique et Methodique ... Botanique 3: 674.

Additional references

Compton, J.A. 2015. A vignette of botany in the age of enlightenment: The story of Catesby’s climber or the Carolina kidney-bean tree, Wisteria frutescens Leguminosae (Fabaceae). Curtis's Botanical Magazine 32(3–4): 193–247. DOI: 10.1111/curt.12111 Paywall Reference page.
Compton, J.A., Schrire, B.D., Könyves, K., Forest, F., Malakasi, P., Mattapha, S. & Sirichamorn, Y. 2019. The Callerya Group redefined and Tribe Wisterieae (Fabaceae) emended based on morphology and data from nuclear and chloroplast DNA sequences. PhytoKeys 125: 1–112. DOI: 10.3897/phytokeys.125.34877 Open access. Reference page.
Compton, J.A. & Lane, C. 2019. Wisteria. The Complete Guide. (RHS horticultural monograph 3). Royal Horticultural Society Peterborough, London. ISBN 978-1-907057-88-5 Reference page.

Links

Govaerts, R. et al. 2021. Wisteria frutescens in Kew Science Plants of the World online. The Board of Trustees of the Royal Botanic Gardens, Kew. Published on the internet. Accessed: 2021 Jun 22. Reference page.
International Plant Names Index. 2021. Wisteria frutescens. Published online. Accessed: Jun 22 2021.
Tropicos.org 2021. Wisteria frutescens. Missouri Botanical Garden. Published on the internet. Accessed: 2021 Jun 22.
Hassler, M. 2021. Wisteria frutescens. World Plants: Synonymic Checklists of the Vascular Plants of the World In: Roskovh, Y., Abucay, L., Orrell, T., Nicolson, D., Bailly, N., Kirk, P., Bourgoin, T., DeWalt, R.E., Decock, W., De Wever, A., Nieukerken, E. van, Zarucchi, J. & Penev, L., eds. 2021. Species 2000 & ITIS Catalogue of Life. Published on the internet. Accessed: 2021 Jun 22. Reference page.
Hassler, M. 2021. World Plants. Synonymic Checklist and Distribution of the World Flora. . Wisteria frutescens. Accessed: 22 Jun 2021.
USDA, ARS, Germplasm Resources Information Network. Wisteria frutescens in the Germplasm Resources Information Network (GRIN), U.S. Department of Agriculture Agricultural Research Service. Accessed: 07-Oct-06.

Vernacular names
العربية: وستارية شجيرية
čeština: Vistárie křovitá
Deutsch: Amerikanischer Blauregen
English: American Wisteria
français: Glycine d'Amérique
日本語: アメリカフジ
Nederlands: Blauwe regen
polski: Glicynia amerykańska
русский: Глициния кустарниковая
slovenčina: Vistéria krovitá
українська: Гліцинія чагарникова

Wisteria frutescens, commonly known as American wisteria, is a woody, deciduous, perennial climbing vine, one of various wisterias of the family Fabaceae. It is native to the wet forests and stream banks of the southeastern United States, with a range stretching from the states of Virginia to Texas (Northeast Texas Piney Woods) and extending southeast through Florida, also north to Iowa, Michigan, and New York.

Taxonomy

Carl Linnaeus described Wisteria frutescens.

Kentucky wisteria, Wisteria frutescens var. macrostachya is a distinctive variety found in the southeastern United States,[16] including its namesake state of Kentucky. It has been classified as a separate species, Wisteria macrostachya (Torr. & A. Gray) Nutt. ex B. L. Rob. & Fernald.[17]
Description

American wisteria can grow up to 15 m long over many supports via powerful clockwise-twining stems. It produces dense clusters of blue-purple, two-lipped, flowers 2 cm (3⁄4 in) wide on racemes 5–15 cm (2–6 in) long in late spring to early summer. These are the smallest racemes produced by any Wisteria. Though it has never been favored in many gardens for this characteristic, many bonsai artists employ American wisteria for its manageably-sized flowers, and it is charming as a woodland flowering vine.

The foliage consists of shiny, dark-green, pinnately compound leaves 10–30 cm (4–12 in) in length. The leaves bear 9-15 oblong leaflets that are each 2–6 cm (3⁄4–2+1⁄4 in) long. It also bears numerous poisonous, bean-like seed pods 5–10 cm (2–3+7⁄8 in) long that mature in summer and persist until winter; the pods are fuzzy and greenish-tan when young, but shiny brown and smooth when dry. The seeds are large and brown (see image). American wisteria prefers moist soils. It is considered shade tolerant, but will flower only when exposed to partial or full sun. It grows best in USDA plant hardiness zones 5–9.

Kentucky wisteria bears unscented bluish-purple flowers in racemes 15–30 cm (6–12 in) long, a generally average length for the Wisteria family.[18]

Several characteristics distinguish American wisteria from its Asian counterparts. It grows only two-thirds as tall, its racemes are half as long (the shortest of the wisteria family), and its bloom time is sometimes shorter than many Asian varieties. Its flowers are not scented, and its seed pods are smooth rather than velvety when mature.

American wisteria is very similar to Kentucky wisteria (Wisteria macrostachya) which has been considered a variety of W. frutescens but grows somewhat differently and has a fragrance.
Wisteria frutescens by Ellis Rowan, 1901
Ecology

The butterflies long-tailed skipper, silver-spotted skipper,[19] marine blue,[20] zarucco duskywing[21] and the moth Cuphodes wisteriae[22] use Wisteria frutescens as a larval host.
Pests and diseases

Wisteria frutescens, in general, is subject to few pests or diseases. It is, however, subject to damage by typical pests like aphids, leaf miners, Japanese beetles, scale insects, and mealybugs. Pests of particular concern are longhorn beetles, such as Synaphaeta guexi, and the Asian long-horned beetle. These beetles will bore into the woody stems of young or unhealthy wisteria, causing disruption of water and nutrient flow. This also allows for the potential to introduce disease, like rot, and both of these have the potential to cause death of the plant.[23][24]

Aplosporella wistariae Ellis & Barthol., previously known as Haplosporella wistariae Ellis & Barthol.,[25] has been found on some cultivars of wisteria in Louisville, Kansas. Its stromata are elliptical or orbicular, are 1–2 mm in diameter, and are sunk into the bark, which causes raised pustules, some of which are ruptured. Its perithecia are 120-150 μm and are white inside; sporules are oblong, measuring 12-16 by 6-7 μm.[26]

Partly dead leaves of Wisteria frutescens have been found to host Phomatospora wistariae Ellis & Everh. This fungus is perithecial, meaning its fruiting body is flask-shaped with an ostiole through which its ascospores are released. It is mostly epiphytic, and it grows in relatively flat gray spots that are approximately 2–4 mm. in diameter. These spots are bounded by narrow dark lines; however, they frequently run together. Phomatospora wistariae is hyaline in appearance and resembles a membrane, it is sessile, it does not have paraphyses, its asci are oblong, and its sporidia are biseriate and have an oblong-elliptical shape. Its perithecia mesaure to about 110-120 μm, its asci 35-45 by 10-12 μm, and its sporidia 12 by 6 μm.[26]

Rhizobium radiobacter, previously known as Agrobacterium tumefaciens and commonly as crown gall, is a soil-borne bacterium that occasionally infects wisteria, causing abnormal growths or swellings on the roots or stems. It infects the plant through its Ti plasmid, and then A. tumefaciens integrates a part of its DNA into the chromosome of the host plant's cells.[27] The K-48 strain of the bacterium can be effectively used to prevent infection by the pathogenic strain of Crown Gall.[28]

Root-knot nematodes are parasites known to affect most species of plants, wisteria not being an exception, but wisteria is susceptible to Texas root rot caused by the fungus Phymatotrichum omnivorum. Texas root rot damages the roots and prevents their absorption of water, resulting in wilting then death.[27]

Pantoea agglomerans has been shown to induce galls on Wisteria.[29]

Wisteria brachybotrys, Wisteria floribunda, Wisteria sinensis and Wisteria venusta, have been shown to carry Erysiphe cichoracearum, Botryosphaeria, and Phomopsis canker and die-back pathogens, Phyllosticta wisteriae, and Septoria wisteriae. Wisteria vein mosaic virus (a variant of the tobacco mosaic virus) and subterranean clover stunt virus are the only two known viruses to infect genus Wisteria, and the potential for Wisteria frutescens to contract any of the previously mentioned diseases is indeterminate.[27][30][31][32][33][34]
Toxicity

All species of Wisteria contain a saponin known as Wisterin in the bark, branches, pods, roots, and seeds. There is debate over whether the flowers are toxic. An unknown and toxic resin is present as well. Poisoning from the plant can occur from ingestion of 1 to 2 seed pods and results in mild to severe gastroenteritis, nausea, frequent vomiting, abdominal pain and diarrhea. This can result in dehydration and collapse in serious cases; recovery generally occurs within 24 hours. The concentration of toxins varies in all segments of the plant and varies during different seasons. Wisterin's structure has been shown to be similar in structure and in effects to the alkaloid cytisine, but less potent. It has a bittersweet taste. As with the cytisine containing Laburnum, its leaves are sometimes taken as a tobacco substitute.[35][36]
Wisteria frutescens seeds in pod halves

Canavanine is a common α-amino-acid constituent found in the seeds of all species of Wisteria. It serves as a defense compound against herbivores and provides a vital source of nitrogen for the growing plant embryo. The toxicity of canavanine is due to its extreme structural similarity to L-arginine, which may result in an organism's incorporation of it into proteins in place of L-arginine. This causes aberrant proteins that may not function properly.[37]
Leaves
Mature bark
References

Frederick Traugott Pursh (1814). Flora Americae Septentrionalis Vol. II (Apios frutescens). White, Cochrance, and co. p. 474.
Nathaniel Lord Britton (1901). Manual of the Flora of the northern States and Canada (Bradlea frutescens & macrostachys. Holt. |page 549
Carl Von Linné; Lars Salvius (1753). Species Plantarum 2 (Glycine frutescens). vol. 2. Holmiae :Impensis Laurentii Salvii. p. 753.
Constantine Samuel Rafinesque & Edward Lee Greene (1891). Pittonia Vol. II (Kraunhia frutescens). Doxey & Co. [etc.] p. 175.
Duane Isely. Vascular Flora of the Southeastern United States: Vol. 3, Part 2 (Kraunhia macrostachya). The University of North Carolina Press.
Torrey Botanical Club (1898). Bulletin of the Torrey Botanical Club Vol. XXV (Kraunhia macrostachys). Torrey Botanical Club. p. 134.
Carl Ernst Otto Kuntze (5 November 1891). Revisio Generum Plantarum Pars. 1 (Phaseolodes frutescens). v.1. A. Felix. p. 201.
Amos Eaton & John Wright (1840). North American Botany (A Manual of Botany Edition 8) (Phaseolus frutescens). E. Gates. p. 354.
Journal of the Academy of Natural Sciences of Philadelphia Vol. 1 Part 2 (Thyrsanthus frutescens). Academy of Natural Sciences of Philadelphia. 1818. p. 371.
John Torrey; Asa Gray; Putnam Wiley (1838). A flora of North America (Wisteria frutescens var. macrostachya). Putnam Wiley. p. 283.
Ludwig Beifsner; Ernst Schelle; Hermann Zabel (1903). Handbuch der LAubholz-Benenung III. P. Parey. p. 270.
"IPNI Albolilacina". Retrieved May 26, 2015.
Revue Horticole. Audot. 1862. p. 50.
"International Legume Database & Information Service". Retrieved May 24, 2015.
Arnold Arboretum (1919). "Journal of the Arnold Arboretum Vol. 8 (Wisteria macrostachya f. albo-lilacina". Arnold Arboretum, Harvard University: 149.
Jarantoski, K.S. (January 1988). "Wisteria frutescens and W. macrostachya". The Public Garden: Journal of the American Association of Botanical Gardens and Arboreta. 3 (1): 33.
"Wisteria macrostachya". Germplasm Resources Information Network (GRIN). Agricultural Research Service (ARS), United States Department of Agriculture (USDA). Retrieved 2019-07-08.
Thompson, Ralph L. (September 1980). "Woody Vegetation and Floristic Affinities of Mingo Wilderness Area, a Northern Terminus of Southern Floodplain Forest, Missouri". Castanea. 45 (3): 194–212. JSTOR 4033235.
"Weeds and Invasive Plants - Wisteria". University of Florida. Retrieved May 29, 2015.
"Wisteria Frutescens (American Wisteria) Lady Bird Johnson". Retrieved May 29, 2015.
"Wisteria Frutescens NC State University". NC State University. Retrieved May 29, 2015.
Atsushi Kawakita, Tomoko Okamoto, Ryutaro Goto and Makoto Kato (Sep 22, 2010). "Mutualism favours higher host specificity than does antagonism in plant–herbivore interactio". Royal Society Publishing.
"Wisteria Borer Control". Retrieved May 26, 2015.
"Fine Gardening American Wisteria". Retrieved May 26, 2015.
"Index Fungorum Haplosporella wistariae Ellis & Barthol". Retrieved May 26, 2015.
William Ashbrook Kellerman (2008) [October 14, 1902]. "Journal of Mycology, Volume 8". BiblioBazaar.
"Plant Disease Handbook Texas A&M AgriLife Extension Wisteria". Retrieved May 26, 2015.
"UC IPM How to Manage Pests UC Pest Management Guidelines". Retrieved May 26, 2015.
De Maayer, P.; Chan, W. Y.; Blom, J.; Venter, S. N.; Duffy, B.; Smits, T. H.; Coutinho, T. A. (2012). "The large universal Pantoea plasmid LPP-1 plays a major role in biological and ecological diversification". BMC Genomics. 13: 625. doi:10.1186/1471-2164-13-625. PMC 3505739. PMID 23151240.
"Phyllosticta leaf spot of Chinese wisteria" (PDF). Retrieved May 26, 2015.
Brunt, A.A., Crabtree, K., Dallwitz, M.J., Gibbs, A.J., Watson, L. and Zurcher, E.J. (eds.). "Plant Viruses Online". Retrieved May 26, 2015.
"Septoria wisteriae bioinfo". Retrieved May 26, 2015.
G. R. G. Clover1, Z. Tang, T. E. Smales and, M. N. Pearson (Jan 20, 2003). "Taxonomy of Wisteria vein mosaic virus and extensions to its host range and geographical distribution". Plant Pathology. 52: 92–96. doi:10.1046/j.1365-3059.2003.00798.x.
"UC IPM wisteria". Retrieved May 26, 2015.
Kent D. Perkins; Willward W. Payne (1970). Guide to the Poisonous and Irritant Plants of Florida. Valerie D'lppolito (illustrator). Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida.
Jacqueline Kupper; Daniel Demuth (2010). Giftige Pflanzen für Klein- und Heimtiere: Pflanze erkennen - Gift benennen - Richtig therapieren. Georg Thieme Verlag. p. 86. ISBN 9783830410348.
Dietary Supplements: A Framework for Evaluating Safety. National Academies Press (US). 2005.

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