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Dulichium arundinaceum (L. ) Britton
THREEWAY SEDGE
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Dulichium arundinaceum
© Copyright Bobby Hattaway 2011 · 5
Dulichium arundinaceum

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Dulichium arundinaceum
© Les Mehrhoff, 2008-2010 · 4
Dulichium arundinaceum
Dulichium arundinaceum
© Les Mehrhoff, 2008-2010 · 3
Dulichium arundinaceum

Dulichium arundinaceum
© Les Mehrhoff, 2008-2010 · 2
Dulichium arundinaceum

Associates · map
FamilyScientific name @ source (records)
Physodermataceae  Physoderma dulichii @ BPI (3)
Pucciniaceae  Puccinia asterum @ BPI (13)

Puccinia dioicae @ BPI (5)

Puccinia dulichii @ BPI (3)

Puccinia extensicola-solidaginis @ BPI (1)

Puccinia extensicola @ BPI (23)

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Following modified from Plants Database, United States Department of Agriculture
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Following modified from Flora of North America
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FNA Vol. 23 Page 196, 198 Login | eFloras Home | Help
FNA | Family List | FNA Vol. 23 | Cyperaceae | Dulichium

1. Dulichium arundinaceum (Linnaeus) Britton, Bull. Torrey Bot. Club. 21: 29. 1894.

Cyperus arundinaceus Linneaus, Sp. Pl. 1: 44. 1753 (as arundinacea)

Rhizomes 2—5 mm thick; internodes 2—5 cm. Culms 2—14, erect, unbranched, jointed, aphyllo-podic, terete, 20—100 cm × 2—5 mm; internodes hollow. Leaves: sheaths 2—14, bladeless, green, often with white dots in intervenal areas, with brown-hyaline 1—2 mm margin at mouth, firm; blades 3—15 per culm, 3-ranked, ascending, thick, 4—15 cm × 1—8 mm, ± leathery, glabrous; distal 5—20 leaves serving as bracts. Inflorescences 6—30 cm; spikes 1—17, in sheath axils, 2—5 cm. Spikelets 2-ranked, appressed-ascending to ascending-spreading, linear-lanceolate, flat, 1.5—3 cm × 1.2—2.5 mm; rachilla winged, wings hyaline, usually containing spongy tissue proximally, occasionally ciliate; scales decurrent, spongy-based, 5—9.5 × 1.4—2.4 mm, each subtending flower. Flowers 2-ranked, sessile; scales green with gold-hyaline margins; perianth bristles 6—9, 4—7.5 mm, stiff; stamens 3, longer than perianth bristles; pistils 1, 2-carpellate; styles 1, 3.8—6 mm, base persistent on achene; stigmas 2, 1—3.8 mm. Achene stipitate, 2—4 × 0.8—1.1 mm (excluding style base), shorter than perianth bristles.

Varieties 2 (2 in the flora): North America.

Following modified from CalPhotos
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http://calphotos.berkeley.edu/cgi/img_query?query_src=dl&where-taxon=Dulichium+arundinaceum&where-lifeform=specimen_tag&rel-lifeform=ne&rel-taxon=begins+with&where-lifeform=Plant ---> https://calphotos.berkeley.edu/cgi/img_query?query_src=dl&where-taxon=Dulichium+arundinaceum&where-lifeform=specimen_tag&rel-lifeform=ne&rel-taxon=begins+with&where-lifeform=Plant
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Updated: 2018-01-19 12:25:56 gmt
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