Overview

Distribution

National Distribution

Canada

Origin: Native

Regularity: Regularly occurring

Currently: Present

Confidence: Confident

United States

Origin: Native

Regularity: Regularly occurring

Currently: Present

Confidence: Confident

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Physical Description

Morphology

Physical Description

Annual, Herbs, Vines, twining, climbing, Taproot present, Nodules present, Stems prostrate, trailing, or mat forming, Stems less than 1 m tall, Stems 1-2 m tall, Stems greater than 2 m tall, Stems solid, Stems or young twigs sparsely to densely hairy, Stems hairs pilose or spreading, Leaves alternate, Leaves petiolate, Stipules inconspicuous, absent, or caducous, Stipules persistent, Stipules free, Leaves compound, Leaves pinnately 3-foliolate, Leaves odd pinnate, Leaf or leaflet margins entire, L eaflets lobed or hastate, Leaflets opposite, Stipels present at base of leaflets, Leaflets 3, Leaves hairy on one or both surfaces, Flowers in axillary clusters or few-floweredracemes, 2-6 flowers, Inflorescences globose heads, capitate or subcapitate, Inflorescence axillary, Bracteoles present, Flowers zygomorphic, Calyx 5-lobed, Calyx hairy, Petals separate, Corolla papilionaceous, Petals greenish yellow, Petals pinkish to rose, Banner petal ovoid or obovate, Wing petals narrow, oblanceolate to oblong, Wing tips obtuse or rounded, Keel abruptly curved, or spirally coiled, Stamens 9-10, Stamens diadelphous, 9 united, 1 free, Filaments glabrous, Style terete, Style hairy, Style hairy on one side only, Fruit a legume, Fruit unilocular, Fruit freely dehiscent, Fruit elongate, straight, Fruit exserted from calyx, Valves twisting or coiling after dehiscence, Fruit glabrous or glabrate, Fruit 3-10 seeded, Seeds ovoid to rounded in outline, Seed surface wrinkled or rugose, Seeds olive, brown, or black, Seed surface mottled or patchy.
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Dr. David Bogler

Source: USDA NRCS PLANTS Database

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Type Information

Type for Phaseolus helvolus L.
Catalog Number: US 966089
Collection: Smithsonian Institution, National Museum of Natural History, Department of Botany
Verification Degree: Unknown verification or is "ined."
Preparation: Pressed specimen
Collector(s): ex herb. Biltmore
Year Collected: 1896
Locality: Biltmore, sandy flats., Buncombe, North Carolina, United States, North America
  • Type: Linnaeus, C. 1753. Sp. Pl. 724.
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Source: National Museum of Natural History Collections

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Ecology

Associations

Flower-Visiting Insects of Trailing Wild Bean in Illinois

Strophostyles helvola (Trailing Wild Bean)
(Long-tongued bees collect pollen or suck nectar from flowers; other insects suck nectar from flowers or extra-floral nectaries; most observations are from Robertson, otherwise they are from Fothergill & Vaughn as indicated below)

Visit flowers:

Bees (long-tongued)
Apidae (Bombini): Bombus pensylvanica sn; Megachilidae (Megachilini): Megachile brevis brevis sn cp fq, Megachile campanulae campanulae sn, Megachile integra sn cp fq olg, Megachile latimanus sn, Megachile mendica sn, Megachile petulans sn cp fq, Megachile texana sn cp fq

Skippers
Hesperiidae: Ancyloxypha numitor sn (FV)

Visit extra-floral nectaries:

Bees (short-tongued)
Halictidae (Halictinae): Augochlorella striata; Halictidae (Sphecodini): Sphecodes dichroa

Wasps
Sphecidae (Astatinae): Astata unicolor; Sphecidae (Bembicinae): Synnevrus aurinotus; Sphecidae (Crabroninae): Oxybelus uniglumis; Sphecidae (Larrinae): Tachysphex mundus, Trypoxylon frigidum; Sphecidae (Philanthinae): Cerceris clypeata, Cerceris finitima, Cerceris kennecottii fq, Philanthus gibbosus; Sphecidae (Sphecinae): Chalybion californicus, Sceliphron caementaria; Vespidae: Polistes fuscata, Vespula germanica; Vespidae (Eumeninae): Parancistrocerus vagus; Pompilidae: Ageniella longulus, Anoplius atrox; Mutillidae: Dasymutilla macra, Ephuta scrupea; Chrysididae: Chrysis venusta, Hedychrum parvum; Braconidae: Vipio vulgaris; Ichneumonidae: Sinophorus fura

Ants
Formicidae: Formica fusca fq, Formica schaufussi, Lasius nigra

Sawflies
Tenthredinidae: Pristiphora sycophanta

Flies
Syrphidae: Toxomerus marginatus; Tachinidae: Chetogena claripennis, Paradidyma singularis; Sarcophagidae: Blaesoxipha hunteri, Blaesoxipha uncata, Helicobia rapax, Ravinia derelicta, Ravinia stimulans, Tripanurga importuna; Muscidae: Bithoracochaeta leucoprocta; Sepsidae: Sepsis violacea; Milichiidae: Pholeomyia indecora; Drosophilidae: Leucophenga varia; Otitidae: Delphinia picta; Platystomatidae: Rivellia quadrifasciata

Beetles
Coccinellidae: Coccinella novemnotata

Plant Bugs
Miridae: Lygus lineolaris

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Molecular Biology and Genetics

Molecular Biology

Barcode data: Strophostyles helvola

The following is a representative barcode sequence, the centroid of all available sequences for this species.


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Source: Barcode of Life Data Systems (BOLD)

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Statistics of barcoding coverage: Strophostyles helvula

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 0
Specimens with Barcodes: 3
Species With Barcodes: 1
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Statistics of barcoding coverage: Strophostyles helvola

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 3
Specimens with Barcodes: 6
Species With Barcodes: 1
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Conservation

Conservation Status

National NatureServe Conservation Status

Canada

Rounded National Status Rank: N4 - Apparently Secure

United States

Rounded National Status Rank: N5 - Secure

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NatureServe Conservation Status

Rounded Global Status Rank: G5 - Secure

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Wikipedia

Strophostyles helvola

Strophostyles helvola (sometimes spelled S. helvula) is a species of flowering plant in the legume family known by the common names amberique-bean, annual wooly-bean, trailing wild bean, and trailing fuzzy-bean. It is native to eastern North America, where it occurs in eastern Canada and the eastern United States.[1]

This species is an annual vine with a fuzzy stem up to 3 meters long. The leaves are usually divided into three lobes. Pealike purple flowers grow on leafless stalks. The fruit is a fuzzy pod up to 10 centimeters long containing shiny black seeds with hairy coats.[2]

This bean grows in many habitat types, including disturbed areas, where it is a pioneer species, taking hold in areas where there are few other plants. It grows in several types of soil, especially sandy types, and it can grow in dry or moist conditions.[2] It can often be found in seaside dune habitat, where arbuscular mycorrhizae help it withstand saline conditions.[3]

This plant was used medicinally by Native American peoples. The Houma people used it to treat typhoid and the Iroquois used it topically for poison ivy irritation and warts. The Choctaw people used the roots for food.[4]

References[edit]

  1. ^ Strophostyles helvula. NatureServe.
  2. ^ a b Strophostyles helvola. USDA NRCS Plant Guide.
  3. ^ Tsang, A. and M. A. Maun. (1999). Mycorrhizal fungi increase salt tolerance of Strophostyles helvola in coastal foredunes. Plant Ecology 144 159-66.
  4. ^ Strophostyles helvula. University of Michigan Ethnobotany.
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