Bolboschoenus maritimus subsp. paludosus

(A. Nelson) T. Koyama

Acta Phytotax. Geobot. 31: 148. 1980

Common names: Bolboschoenus des marais salés scirpe des marais salés
Synonyms: Scirpus maritimus var. paludosus (A. Nelson) Kükenthal Scirpus pacificus unknown
Basionyms: Scirpus paludosus A. Nelson Scirpus campestris Britton
Treatment appears in FNA Volume 23. Treatment on page 41. Mentioned on page 40.
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Scales medium brown to nearly colorless, rarely dark brown. Styles all 2-fid (rarely, some 3-fid). Achenes medium brown, sometimes darker or paler, biconvex.

Phenology: Fruiting spring–fall (south and lowland California), summer (north).
Habitat: Brackish to saline coastal and inland shores, marshes
Elevation: 0–2900 m

Distribution

V23 57-distribution-map.jpg

Alta., B.C., Man., N.B., N.W.T., N.S., Ont., P.E.I., Que., Sask., Alaska, Ariz., Calif., Colo., Conn., Idaho, Ill., Iowa, Kans., Maine, Mass., Mich., Minn., Mo., Mont., Nebr., Nev., N.H., N.J., N.Mex., N.Y., N.Dak., Okla., Oreg., R.I., S.Dak., Tex., Utah, Wash., Wyo., Mexico, South America (Argentina, Peru), Pacific Islands (Hawaii).

Discussion

Many bipistillate specimens from Eurasia and Africa are very similar to American plants. Further study may show that these plants should be included in Bolboschoenus maritimus subsp. paludosus.

Plants from seashores have bright brown floral scales and medium to dark brown achenes; plants from the western interior have bright brown to very pale floral scales and/or achenes.

Around Chicago, Illinois, Bolboschoenus maritimus subsp. paludosus is spreading with other halophytes in roadside ditches where salts accumulate; it is likely to occur elsewhere in similar conditions. Bolboschoenus maritimus subsp. paludosus is planted for waterfowl food (H. A. George 1963, as Scirpus robustus), and in California it is sometimes mixed with B. glaucus and hybrids. The tough inner vascular cores of the rhizomes are used by Native Americans of the Pacific Coast in making baskets.

References

None.

Lower Taxa

No lower taxa listed.