Eleocharis acicularis |
Eleocharis reverchonii |
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needle spikerush |
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Habit | Very slender perennial from slender, branching rhizomes, forming dense tufts; culms filiform, 3-12 cm. tall, the basal sheaths pale or purplish. | |
Leaves | Leaves all basal and reduced to sheaths. |
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Flowers | Spikelet solitary and terminal, 2.5-7 mm. long, 3- to 15-flowered; scales of the spikelets spirally arranged, 1.5-2.2 mm. long, translucent, with a greenish midrib and paler margins; perianth of 3-4 bristles, equaling the achene, or wanting; stamens 3; style trifid, thickened at the base. |
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Fruits | Achenes white to pale gray, 0.7-1.1 mm. long, with a conic tubercle (the thickened base of the style), the body obovoid, longitudinally 8- to 18-ribbed. |
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Eleocharis acicularis |
Eleocharis reverchonii |
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Flowering time | June-September | |
Habitat | Marshes, muddy shores, and other wet places. | |
Distribution | Occurring on both sides of the Cascades crest in Washington; Alaska to California, east across North America to the Atlantic Coast; circumboreal.
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Origin | Native | |
Conservation status | Not of concern | |
Sibling taxa | ||
Web links |
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