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Fuirena coerulescens Steud.

Blue umbrella-sedge (en)

Species

Angiosperms > Poales > Cyperaceae > Fuirena

Characteristics

Perennial herb, 0.25-0.98 m high. Leaf blades 2-5 mm wide. Culm nodose, sharply 3-angled, 1-3 mm in diam. near base. Inflorescence a terminal cluster of up to 12 sessile or shortly stalked spikelets, up to ± 17 mm in diam. Subtending bracts of 2 unequal, lower overtopping spikelets. Spikelets narrowly ovate, excl. awns 6-15 (-19) x (2.5-)3.0-4.0 mm. Glumes: fertile lanceolate, incl. awn 3.5-5.0 mm long, keel excurrent into ± 1.2 mm long awn. Perianth: outer whorl of 3 bristles or absent; inner whorl of 3 scales, or bristles or absent, scales stalked. Flowering time Jan., Apr., Aug., Oct., Dec. Nutlet broadly obovate, incl. beak and stalk 1.3-1.6 x 0.7-0.9 mm, 3-angled, surface reticulate.
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Perennial herb, up to 500 mm high. Rhizome 3-9 mm in diameter. Flowers: usually 3 perianth scales, with awn; glumes reddish green, with awns 0.8-1.7 mm long, pubescent except distally. Fruit a nutlet 1.3-1.6 x 0.7-0.9 mm, epidermal cells of pericarp large (visible with 10 x lens) with deeply and closely rippled anticlinal walls.
Perennial herb, up to 500 mm tall. Petals as long as nut, clawed, pinnatifid. Epidermal cells of pericarp large (visible with 10 x lens) with deeply and closely rippled anticlinal walls. Glumes reddish green.
Perennial, 20-40 cm. Spikelets pubescent, blue-green.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention deciduous
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.5
Root system rhizome
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

Light -
Soil humidity 1-3
Soil texture -
Soil acidity -
Soil nutriment -
Hardiness (USDA) 8-12

Usage

Uses -
Edible -
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Mode -
Germination duration (days) -
Germination temperacture (C°) -
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Distribution

Fuirena coerulescens world distribution map, present in Madagascar, Namibia, United States of America, South Africa, Zambia, and Zimbabwe

Conservation status

Fuirena coerulescens threat status: Least Concern

Identifiers

LSID urn:lsid:ipni.org:names:308462-1
WFO ID wfo-0000425951
COL ID 6JQBZ
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Fuirena coerulescens Scirpus coerulescens Fuirena subdigitata Fuirena enodis Fuirena mollicula Fuirena glauca Fuirena reticulata Scirpus enodis
WorldFloraDB 2024