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fragrant spikesedge, whitehead sedge

Asian spikesedge, crested greenhead sedge

Habit Plants perennial, densely cespitose, rhizomatous. Plants annual, cespitose, not rhizomatous.
Culms

(5–)10–25(–45) cm, smooth.

5–35 cm, smooth.

Leaves

flat to slightly folded, (6–)10–20(–30) cm × 2–3(–4) mm.

flat, 5–30 cm × 1.5–2 mm.

Inflorescences

spikes 1–3(–4), whitish, ovoid to ellipsoid, 6–12(–18) × 4–8 mm;

bracts (2–)3–4, horizontal, flat, (2–)3–4, 1–7(–9) cm × (0.5–)1–3(–4.5) mm.

spike 1, subglobose, 6–10 mm diam.;

bracts 3–4, horizontal to slightly reflexed, flat, 1–6 cm × 1–2 mm.

Spikelets

(50–)75–150, ovate to ovate-lanceolate, (1.8–) 2.3–2.8(–3) × 1–1.3 mm;

floral scales whitish, laterally 2–3-veined, broadly ovate, 2–2.5 × (1.3–)1.8–2.6 mm;

stamens 2;

anthers (0.4–)0.6–0.8(–1) mm;

style 0.6–1 mm;

stigmas 0.3–0.6 mm.

50–70(–100), stipitate, ovate, 2.5–4 × 2–3 mm;

floral scales dull greenish white to stramineous, midvein with laciniate keel ± as long as scale, 1 mm wide, laterally 2-veined, ovate, 2.2–3.8 × 2 mm, acuminate;

stamens (1–)2;

anthers 2 mm;

style 1 mm;

stigmas 1.5–2 mm.

Achenes

reddish brown to dark brown, broadly ellipsoid, 1.2–1.5 × 0.7–0.8(–0.9) mm, base whitish, stipe to 0.1 mm, apex obtuse, apiculate, puncticulate.

chestnut brown to purplish brown, ovoid, 1.5–2 × 1.2 mm, base sessile, apex apiculate, puncticulate.

Kyllinga odorata

Kyllinga squamulata

Phenology Fruiting summer. Fruiting summer.
Habitat Damp grasslands Lawns, farmlands
Elevation 0–200 m (0–700 ft) 0–50 m (0–200 ft)
Distribution
from FNA
AL; AR; FL; GA; LA; MS; NC; NM; OK; SC; TX; Mexico; Central America; South America; West Indies; Asia; Africa; Australia
[WildflowerSearch map]
[BONAP county map]
from FNA
FL; West Indies; native tropical Asia [Introduced in North America]
[BONAP county map]
Source FNA vol. 23, p. 194. FNA vol. 23, p. 194.
Parent taxa Cyperaceae > Kyllinga Cyperaceae > Kyllinga
Sibling taxa
K. brevifolia, K. gracillima, K. pumila, K. squamulata
K. brevifolia, K. gracillima, K. odorata, K. pumila
Synonyms Cyperus sesquiflorus, K. sesquiflora Cyperus metzii
Name authority Vahl: Enum. Pl. 2: 382. (1805) Thonning ex Vahl: Enum. Pl. 2: 381. (1805)
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