Dulichium arundinaceum

(Linnaeus) Britton

Bull. Torrey Bot. Club 21: 29. 1894.

IllustratedEndemic
Basionym: Cyperus arundinaceus Linneaus Sp. Pl. 1: 44. 1753 (as arundinacea)
Treatment appears in FNA Volume 23. Treatment on page 198. Mentioned on page 196.

Rhizomes 2–5 mm thick; internodes 2–5 cm. Culms 2–14, erect, unbranched, jointed, aphyllopodic, 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.

Distribution

V23 349-distribution-map.jpg

B.C., Man., N.B., N.S., Ont., P.E.I., Que., Ala., Ark., Calif., Conn., Del., Fla., Ga., Idaho, Ill., Ind., Iowa, Ky., La., Maine, Mass., Md., Mich., Minn., Miss., Mo., Mont., N.C., N.H., N.J., N.Y., Nebr., Ohio, Okla., Oreg., Pa., R.I., S.C., Tenn., Tex., Va., Vt., W.Va., Wash., Wis., Wyo.

Discussion

Varieties 2 (2 in the flora).

Selected References

None.

Key

1 Rhizomes 3–5 mm thick; culms 20–100 cm × 4 mm; leaf blades 3.5–8 mm wide; anthers 3–4 mm. Dulichium arundinaceum var. arundinaceum
1 Rhizomes 1–2 mm thick; culms 10–30(–40) cm × 1–2(–3) mm; leaf blades 1–3 mm wide; anthers (1.5–)1.8–2.6(–2.8) mm. Dulichium arundinaceum var. boreale
... more about "Dulichium arundinaceum"
Joy Mastrogiuseppe +
(Linnaeus) Britton +
Cyperus arundinaceus +
B.C. +, Man. +, N.B. +, N.S. +, Ont. +, P.E.I. +, Que. +, Ala. +, Ark. +, Calif. +, Conn. +, Del. +, Fla. +, Ga. +, Idaho +, Ill. +, Ind. +, Iowa +, Ky. +, La. +, Maine +, Mass. +, Md. +, Mich. +, Minn. +, Miss. +, Mo. +, Mont. +, N.C. +, N.H. +, N.J. +, N.Y. +, Nebr. +, Ohio +, Okla. +, Oreg. +, Pa. +, R.I. +, S.C. +, Tenn. +, Tex. +, Va. +, Vt. +, W.Va. +, Wash. +, Wis. +  and Wyo. +
Bull. Torrey Bot. Club +
Illustrated +  and Endemic +
Dulichium arundinaceum +
Dulichium +
species +