geniculate. Ligules 1-2.8 (3.3) mm, acute, obtuse, or truncate, entire or slightly erose; blades usually involute and 0.5-1 mm in diameter, sometimes flat
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according to Rechinger f. (1937), with fusiform-incrassate root fibers]. Stems ascending or decumbent, usually producing axillary shoots below 1st-order inflorescence
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margins 0.3–0.5 mm wide, apex obtuse to truncate, ending at green apex or occasionally extending beyond as 2 obtuse or truncate lobes. Flowers: tepals blue
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acuminate-awned. Anthers 3–5 mm. Perigynia ascending to spreading, yellowish green, 18–26-veined, slightly inflated, lanceolate, 10.3–15.6 × 1.8–3.3 mm
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5–15 spikes, 1–5 cm × 8–15 mm, occasionally compound, then somewhat larger; proximal bracts to 3 cm; spikes with 5–15 ascending to spreading perigynia; proximal
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Herbs, annual; taproot tapered, soft or ± woody. Stems erect or ascending, occasionally decumbent, moderately or profusely branched, primarily distally
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on page 492. Plants perennial, glabrous, with vertical rootstock. Stems ascending or decumbent, usually producing axillary shoots below 1st-order inflorescence
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lobes diverging distal to middle, held nearly parallel, center lobe ascending, slightly longer than lateral lobes. 2n = 28. Phenology: Flowering late spring
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obovate, 2–6.5 cm, margins entire, sinuate, or remotely toothed, (surfaces occasionally sparsely pubescent). Cauline leaves: (proximal often petiolate, distal
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2–0.7 mm proximal to green apex. Flowers: tepals pale blue to violet, occasionally white, bases yellow; outer tepals 7.7–12.5 mm, apex rounded or emarginate
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rhizomes long-creeping. Culms lateral, trigonous, 15–100 cm, smooth or slightly scabrous-angled. Leaves: basal sheaths reddish purple, usually fibrillose
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reddish. Culms 18-75 cm, usually more than 1 mm thick, occasionally delicate, erect or ascending; nodes glabrous; internodes glabrous; fall phase with decumbent
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midculm nodes, blades slightly reduced, secondary panicles partially exserted. Cauline leaves 3-4; sheaths not overlapping, with ascending papillose-based hairs;
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absent or usually divergent or straight, 0.1–0.3 mm, usually slightly longer than, occasionally equaling, teeth on gland margin. Staminate flowers 10–20.
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after anthesis, lowest node with (1) 2-7 branches; branches spreading to ascending, sparsely scabridulous, branching above the midpoint, spikelets usually
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erect or nodding at the apices, green or tan, occasionally purple-tinged; branches 1-5.5 cm, ascending to somewhat divergent, most spikelet-bearing for
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subcordate to weakly cordate, margins entire, flat to weakly undulate, occasionally slightly crisped, apex obtuse or subacute. Inflorescences terminal, occupying
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plants, 2–11.5 dm, basally usually with 2 lines of minute curved hairs, occasionally glabrous, distally with 2 lines of curved hairs, or evenly puberulent
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looking slick. Branches whorled, spreading to ascending; twigs slender, purple-red to redbrown, occasionally glaucous, aging gray, smooth. Buds ovoid to
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underside leaves slightly longer and narrower than upperside leaves, otherwise monomorphic, not clearly ranked, tightly appressed, ascending, green or green
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