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Published In: American Journal of Science and Arts, ser. 2 9(25): 29. 1850. (Amer. J. Sci. Arts, ser. 2) Name publication detailView in BotanicusView in Biodiversity Heritage Library
 

Project Name Data (Last Modified On 9/1/2009)
Acceptance : Accepted
Project Data     (Last Modified On 7/9/2009)
Status: Native

 

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52. Carex lupuliformis Sartwell ex Dewey (hoplike sedge)

Pl. 44 e–h; Map 168

Plants often with long-creeping, dark brown rhizomes, forming clumps or scattered tufts. Vegetative stems generally poorly developed or absent. Flowering stems 1 to few per tuft, 40–120 cm long, smooth, light brown to somewhat reddish tinged at the base. Leaf blades 30–80 cm long, 6–13 mm wide, dull green. Leaf sheaths slightly prolonged past the insertion point of the blade, truncate or slightly convex at the tip, the ligule longer than wide and V-shaped, the uppermost leaf (not a bract subtending a spike) with the sheath 3–21 cm long. Staminate spike 20–100 mm long (rarely a second, shorter, staminate spike at the base of the terminal one), 2–5 mm wide, short- to long-stalked, but the stalk shorter than to about as long as the uppermost pistillate spike. Staminate scales 6–11 mm long, narrowly oblanceolate to lanceolate, tapered to a pointed or awned tip, straw-colored with a green midrib and white margins. Pistillate spikes 2–6, 20–80 mm long, 15–30 mm wide, ascending, ovate to broadly elliptic in outline, with 8–75 perigynia. Pistillate scales 6–13 mm long, lanceolate, tapered to a pointed or rough-awned tip, straw-colored with a green midrib and white margins. Perigynia 12–19 mm long, mostly ascending, narrowly ovate in outline, green or sometimes yellowish brown at maturity, dull, glabrous, the tip with the beak 6–9 mm long, the base rounded. Styles strongly contorted near the base. Fruits with the main body 3.0–4.5 mm long, longer than wide or sometimes about as long as wide, diamond-shaped in outline, widest at the middle, the angles pointed into nipplelike knobs, the sides strongly concave. 2n=60. July–September.

Widely scattered and relatively uncommon in eastern and northern Missouri (eastern U.S. and adjacent Canada west to Minnesota and Texas). Swamps, bottomland forests, and margins of ponds, sometimes emergent aquatics.

 


 

 
 
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