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Carex alataΠαρατηρητής
kosnikbΠεριγραφή
perigynia in hand may be from another plant (but probably same species)
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jim_keeslingΠεριγραφή
These plants were loosely cespitose with stems mostly spreading. Largest leaves were 40 cm long by 3.5 mm wide, about 3 times as long as the average culm. Adaxial blade surfaces were scabrous. Sheathes of old leaves were modestly fibrous. Rhizomes were mostly spreading, commonly 2-4 cm long. Inflorescences were on culms 4-13 cm long. Typical inflorescences had 3 pistillate spikes and 1 staminate spike. Lowest inflorescence internodes were mostly 2-3 mm long. Staminate spikes were 6-8 mm long with peduncles about 0.8-1.0 mm long. Pistillate scales were longer than the perigynia they subtended. Perigynia bodies were hairy and about 2.5 mm long by 1.5 mm wide, with beaks about 1.0 mm long. Typical achenes were 1.5 mm long by 1.1 mm wide. Some achenes were biconvex with 2 stigmas; some were weakly trigonous with 3 stigmas.
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theo_witsellΠεριγραφή
Swale in degraded, seasonally-wet prairie (former hayfield/pasture/orchard).
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Carex fissaΠαρατηρητής
sedgeheadΠεριγραφή
Variety confirmed (probably var. fissa, as I recall) by specimen in the 1990s (MICH, UARK). Found at the intersection of Tenn. Highway 96 and Natchez Trace Parkway, NW corner at end of walkway overlook from parking area. The general area was not searched further for additional plants. Obviously dominant in understory over at least 1/4 acre.
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jim_keeslingΠεριγραφή
Longest blades more than 2.5 times as long as the average culm length. Largest blades up to 1.9 mm wide. All culms upright, ranging 5-10 cm long (avg. 8 cm long). Lowest internode of inflorescence 3-4 mm long. Staminate spikes up to 7 mm long by 1.4 mm wide, exceeding the nearest pistillate spikes by up to 3.5 mm. Staminate scales with a narrow white band between the reddish color on margins and the green midribs.
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sedgeheadΠεριγραφή
Found along the Ozark Highlands Trail (here known as David's Trail) near the eagle nest. This species is easy to tell from C. umbellata once you see the difference. In short, this species has all spikelets on separate stalks. In C. umbellata, the spikelets are "sessile" in the sense that all originate without separate stalks clustered at the tip of one stalk. Compare it to a closed fist (C. umbellata) and an open fist (C. reznicekii) with fingers sticking out and it is easy to remember. I have spread the inflorescence to make this easier to see.
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sedgeheadΠεριγραφή
Numerous colonies in this area along Ozark Highlands Trail. I need to look at this more carefully but made a collection. It could be C. umbellata.
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elacroix-carignanΠεριγραφή
ELC1123 Carex lurida x Carex lupulina
Perigynia less than 2% with a developed achene. Perigynia on the right, compared with those of nearby Carex lurida. Growing alongside Carex lupulina. With @elbourret and Eran Kilpatrick. Specimen vouchered, deposited at herbarium MT.
