Comments
provided by eFloras
Carex aggregata may be difficult to distinguish from C. gravida if the leaf sheaths are damaged or not visible on specimens.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Description
provided by eFloras
Plants without conspicuous rhizomes. Culms (20–)30–100 cm, 1.5–3.5 mm wide basally, 0.7–1.2 mm wide distally. Leaves: sheaths usually loose, proximal green-and-white-striped and green-and-white-mottled, with conspicous transverse veins on back, fronts white to hyaline, sometimes red dotted and transversely rugose, yellow or brown and thickened at mouth; ligules 1–4.5 mm, shorter than to as long as wide; widest leaf blades 3.5–5 mm wide. Inflorescences with 5–10 spikes, (1.5–)2–5 cm × 8–13 mm; proximal internodes shorter than to as long as proximal spikes; proximal bracts to 3 cm; spikes with 5–15 ascending to spreading perigynia. Pistillate scales hyaline or pale brown with green, 1–3-veined center, ovate, 2.2–3.5 × 1.2–1.8 mm, body 2/3 as long to almost length of perigynia, apex acuminate to short-awned. Anthers 1.5–2.5 mm. Perigynia pale green to pale brown, veinless or weakly 2–5-veined abaxially, 3.4–4.6 × 1.9–2.8 mm, body somewhat spongy, thickened at base, margins serrulate distally; beak 0.7–1.4 mm, apical teeth 0.3–1 mm. Achenes circular to elliptic-circular, 1.8–2.1 × 1.6–1.8 mm.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Distribution
provided by eFloras
Ont.; Ala., Del., D.C., Ill., Ind., Iowa, Ky., Md., Minn., Mo., N.J., N.Y., N.C., Ohio, Okla., Pa., S.Dak., Tenn., Va., W.Va., Wis.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Flowering/Fruiting
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Fruiting late spring.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Habitat
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Meadows, thickets, open forests, usually on calcareous soils; 50–300m.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Synonym
provided by eFloras
Carex agglomerata Mackenzie, Bull. Torrey Bot. Club 33: 442. 1906, not C. B. Clarke 1903; C. sparganioides Muhlenberg ex Willdenow var. aggregata (Mackenzie) Gleason
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA