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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Alta., B.C., Sask.; Ariz., Ark., Calif., Colo., Idaho, Iowa, Kans., La., Minn., Mont., Nebr., Nev., N.Mex., N.Dak., Okla., Oreg., S.Dak., Tex., Utah, Wash., Wyo.; Mexico; South America in Peru.
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Physical Description

Morphology

Description

Plants forming diffuse or dense clones. Roots arising at nodes. Petioles 2--20 cm, sparsely pubescent. Pinnae 4--19 × 4--16 mm, pubescent to glabrous. Sporocarp stalks erect, unbranched, attached at base of petiole (occasionally up to 3 mm above it), not hooked at apex, 0.5--25 mm. Sporocarps perpendicular or slightly nodding, 3.6--7.6 × 3--6.5 mm, 1.5--2 mm thick, elliptic to nearly round in lateral view, pubescent but soon glabrate, scars left by fallen trichomes often appearing as purple or brown specks; raphe 1.1--1.7 mm, proximal tooth 0.3--0.6 mm, blunt, distal tooth 0.4--1.2 mm, acute, often hooked at apex. Sori 14--22.
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Diagnostic Description

Synonym

Marsilea fournieri C. Christensen; M. mucronata A. Braun; M. tenuifolia Engelmann ex A. Braun; M. uncinata A. Braun; M. vestita subsp. tenuifolia (Engelmann ex A. Braun) D. M. Johnson
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Ecology

Habitat

Sporocarps produced spring--fall (Apr--Oct). Widespread and variable; in ponds and wet depressions and on river floodplains; 0--2300m.
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Molecular Biology and Genetics

Molecular Biology

Barcode data: Marsilea vestita

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


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Statistics of barcoding coverage: Marsilea vestita

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 32
Specimens with Barcodes: 32
Species With Barcodes: 1
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Conservation

Conservation Status

National NatureServe Conservation Status

Canada

Rounded National Status Rank: N2 - Imperiled

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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Notes

Comments

A number of segregate species have been named and recognized in regional floras in North America: Marsilea mucronata A. Braun (less hairy, found east of Rocky Mountains), M . uncinata (glabrous, sporocarp stalks long, distal tooth of sporocarp hooked, south central United States), M . tenuifolia (pinnae very narrow, central Texas), and M . fournieri (small plants and pinnae, southwest). The features upon which these species are based intergrade into one another. The species are therefore best treated as conspecific with M . vestita (D. M. Johnson 1986). 

 Putative hybrids between Marsilea macropoda and this species are discussed under the former.

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Names and Taxonomy

Taxonomy

Comments: Marsilea vestita is recognized without subspecies by Kartesz (1999); in his 1994 checklist, he had recognized the subspecies tenuifolia and vestita.

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