Kyllinga pumila |
Kyllinga gracillima |
|
---|---|---|
annual greenhead sedge, low spikesedge |
Asiatic greenhead sedge, pasture greenhead-sedge, pasture spikesedge |
|
Habit | Herbs, annual, cespitose, not rhizomatous. | Plants perennial, not cespitose, long-creeping rhizomatous. |
Culms | (5–)15–30(–55) cm, smooth. |
10–35(–50) cm, smooth. |
Leaves | flat to V-shaped, 4–20(–30) cm × 1.5–3(–3.6) mm. |
flat, 10–30 cm × 1–3.5 mm. |
Inflorescences | spikes 1–3, pale greenish, (3–)5–8(–11) × 5–7 mm; bracts (3–) 4(–5), horizontal to ascending at 30°, flat, (1–)3–10(–22) cm × 1–2.5(–3) mm. |
spike 1, ovoid, 7–12 × 6–10 mm; bracts 3–4, horizontal to slightly reflexed, flat, 2–20(–30) cm × 1–3 mm. |
Spikelets | 50–150, lanceolate to ovate-lanceolate, (1.9–)2.4–2.8(–3.8) × 0.6–0.9 mm; floral scales pale brownish to transparent, midvein not winged, laterally 2–3(–4)-veined, ovate, (1.8–)2.2–3.1(–3.4) × 1–1.7 mm; stamens 2; anthers elliptic, (0.2–)0.3–0.4 mm; style 0.5–0.8 mm; stigmas 0.5–0.9 mm. |
40–80, pale greenish or reddish brown, ovate, 3.5–4.5 × 1.2–1.3(–1.4) mm; floral scales laterally 2(–5)-veined, elliptic, 1.8–3.2 × 1–1.6 mm, apex mucronate; stamens 2–3; anthers 0.8–1.1 mm; style 1.8–2.2 mm; stigmas 0.5–1 mm. |
Achenes | light brown, stipitate, oblong, 1–1.2(–1.4) × 0.5–0.6(–0.7) mm, base cuneate to rounded, stipe to 0.1 mm, apex subtruncate, apiculate, finely papillose. |
brown, sessile or stipitate, broadly ellipsoid, 1.5–1.8 × 0.8–1 mm, stipe, if present, to 0.1 mm, apex obtuse, apiculate, puncticulate. |
Kyllinga pumila |
Kyllinga gracillima |
|
Phenology | Fruiting summer. | Fruiting summer. |
Habitat | Damp grasslands, shorelines, ditches, lawns, gardens | Muddy banks of streams and estuaries |
Elevation | 0–200 m (0–700 ft) | 0–1000 m (0–3300 ft) |
Distribution |
AL; AR; DE; FL; GA; IL; IN; KS; KY; LA; MD; MO; MS; NC; NJ; NY; OH; OK; PA; SC; TN; TX; VA; WV; Mexico; Central America; South America; West Indies; Africa
|
AL; AR; CT; DE; GA; KY; MD; MS; NC; NJ; NY; PA; TN; VA; temperate e Asia [Introduced in North America]
|
Source | FNA vol. 23, p. 194. | FNA vol. 23, p. 194. |
Parent taxa | Cyperaceae > Kyllinga | Cyperaceae > Kyllinga |
Sibling taxa | ||
Synonyms | Cyperus densicaespitosus, Cyperus tenuifolius, K. tenuifolia | Cyperus brevifolioides, K. brevifolia var. gracillima, K. brevifolioides |
Name authority | Michaux: Fl. Bor.-Amer. 1: 28. (1803) | Miquel: Ann. Mus. Bot. Lugduno-Batavi 2: 142. (1866) |
Web links |