Overview

Distribution

National Distribution

United States

Origin: Native

Regularity: Regularly occurring

Currently: Present

Confidence: Confident

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Range Description

Chamaecrista nictitans is native to North and South America, and it has been introduced and naturalized in tropical and subtropical Asia and elsewhere.
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Physical Description

Morphology

Physical Description

Annual, Herbs, Taproot present, Nodules present, Stems erect or ascending, Stems or branches arching, spreading or decumbent, Stems less than 1 m tall, Stems solid, Stems or young twigs sparsely to densely hairy, Leaves alternate, Leaves petiolate, Extrafloral nectary glands on petiole, Stipules green, triangulate to lanceolate or foliaceous, Stipules persi stent, Stipules free, Leaves compound, Leaves even pinnate, Leaf or leaflet margins entire, Leaflets opposite, Leaflets 10-many, Leaves hairy on one or both surfaces, Flowers in axillary clusters or few-floweredracemes, 2-6 flowers, Inflorescence axillary, Bracts very small, absent or caducous, Bracteoles present, Flowers actinomorphic or somewhat irregular, Calyx 5-lobed, Calyx hairy, Petals separate, Petals clawed, Petals orange or yellow, Stamens 9-10, Stamens heteromorphic, graded in size, Stamens completely free, separate, Filaments glabrous, Anthers opening by basal or terminal pores or slits, Style terete, Fruit a legume, Fruit unilocular, Fruit freely dehiscent, Fruit elongate, straight, Fruit oblong or ellipsoidal, Fruit exserted from calyx, Fruit internally septate between the seeds, Fruit compressed between seeds, Fruit explosively or elastically dehiscent, Fruit glabrous or glabrate, Fruit hairy, Fruit 3-10 seeded, Seeds subquadrate, Seed surface smooth, Seeds o live, brown, or black.
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Dr. David Bogler

Source: USDA NRCS PLANTS Database

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Type Information

Syntype for Cassia multipinnata Pollard
Catalog Number: US 48350
Collection: Smithsonian Institution, National Museum of Natural History, Department of Botany
Verification Degree: Original publication and alleged type specimen examined
Preparation: Pressed specimen
Collector(s): A. H. Curtiss
Year Collected: 1894
Locality: Near jacksonville, Florida, United States, North America
  • Syntype: Pollard, C. L. 1895. Bull. Torrey Bot. Club. 22: 515.
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Syntype for Cassia multipinnata Pollard
Catalog Number: US 252490
Collection: Smithsonian Institution, National Museum of Natural History, Department of Botany
Verification Degree: Original publication and alleged type specimen examined
Preparation: Pressed specimen
Collector(s): G. V. Nash
Year Collected: 1895
Locality: Tallahassee, Leon, Florida, United States, North America
  • Syntype: Pollard, C. L. 1895. Bull. Torrey Bot. Club. 22: 515.
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Possible syntype for Cassia multipinnata Pollard
Catalog Number: US 46901
Collection: Smithsonian Institution, National Museum of Natural History, Department of Botany
Verification Degree: Original publication and alleged type specimen examined
Preparation: Pressed specimen
Collector(s): A. H. Curtiss
Locality: Old fields, near Jacksonville, Florida, Duval, Florida, United States, North America
  • Possible syntype: Pollard, C. L. 1895. Bull. Torrey Bot. Club. 22: 515.
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Possible syntype for Cassia multipinnata Pollard
Catalog Number: US 68050
Collection: Smithsonian Institution, National Museum of Natural History, Department of Botany
Verification Degree: Original publication and alleged type specimen examined
Preparation: Pressed specimen
Collector(s): A. H. Curtiss
Locality: Ne florida, Duval, Florida, United States, North America
Microhabitat: Dry thickets and woodlands
  • Possible syntype: Pollard, C. L. 1895. Bull. Torrey Bot. Club. 22: 515.
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Isotype for Cassia multipinnata var. nashii Pollard
Catalog Number: US 252443
Collection: Smithsonian Institution, National Museum of Natural History, Department of Botany
Preparation: Pressed specimen
Collector(s): G. V. Nash
Year Collected: 1895
Locality: River Junction., Gadsden, Florida, United States, North America
  • Isotype: Pollard, C. L. 1895. Bull. Torrey Bot. Club. 22: 515.
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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
C. nictitans is an annual herbaceous plant which can be found in semi-deciduous forests, open woods prairies, thickets, wet or dry shores, on sandy soils and also in disturbed habitats, such as along roadsides. The species is endemic to diverse climatic regions from northern USA to southern Paraguay and may possess significant genetic variability.

Systems
  • Terrestrial
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Molecular Biology and Genetics

Molecular Biology

Barcode data: Chamaecrista nictitans

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: Chamaecrista nictitans

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 6
Specimens with Barcodes: 13
Species With Barcodes: 1
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Conservation

Conservation Status

National NatureServe Conservation Status

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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IUCN Red List Assessment


Red List Category
LC
Least Concern

Red List Criteria

Version
3.1

Year Assessed
2012

Assessor/s
Contu, S.

Reviewer/s
Hilton-Taylor, C.

Contributor/s

Justification
Chamaecrista nictitans is widespread and common in its natural range, and it is naturalized elsewhere. At present the population is believed to be stable and does not appear to be under any significant threat, hence the species is rated as Least Concern.
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Population

Population
The species has a wide distribution range, it is generally recorded as common and able to grow in different habitat types and in disturbed habitats.

Population Trend
Stable
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Threats

Major Threats
There are no major known threats to this species at present.
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Management

Conservation Actions

Conservation Actions
There are no known conservation measures specifically for C. nictitans, but the species is currently known to occur in many protected areas. Samples of seed of C. nictitans are stored in the Millennium Seed Bank and in the Svalbard Global Seed Vault as an ex situ conservation measure.
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Wikipedia

Chamaecrista nictitans

Chamaecrista nictitans (Sensitive Partridge Pea, Small Partridge Pea or Wild Sensitive Plant)[1] is a herbaceous species of legume widely distributed through the temperate and tropical Americas.[2] It is an annual plant capable of rapid plant movement—its leaflets fold together when touched.[3]

It is similar to Chamaecrista fasciculata except that the leaves are smaller.[1]

References[edit]

  1. ^ a b Miller, James Howard; Miller, Karl V. (2005). Forest plants of the Southeast and their wildlife uses. University of Georgia Press. p. 26. ISBN 978-0-300-12103-2. 
  2. ^ Gargiullo, Margaret B.; Magnuson, Barbara L.; Larry D., Kimball (2008). A field guide to plants of Costa Rica. Oxford University Press. p. 345. ISBN 978-0-19-518824-0. 
  3. ^ "NPIN: Chamaecrista nictitans (Partridge-Pea)". Lady Bird Johnson Wildflower Center. 1 January 2007. Retrieved 16 August 2010. 
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