Pycreus sanguinolentus (Vahl) Nees

Species

Angiosperms > Poales > Cyperaceae > Pycreus

Characteristics

Annuals. Roots fibrous. Culms densely tufted, 5-50 cm tall, compressed 3-angled, smooth, with several leaves basally. Leaves several, usually shorter than culm to rarely longer; sheath usually reddish brown, short; leaf blade 2-4 mm wide or less, flat, apical margin denticulate. Involucral bracts 2-5, leaflike, longer than inflorescence, subspreading. Inflorescence a simple anthela; rays 3-5, mostly to 4.5 cm to sometimes very short and inflorescence a capitulum, each with 4-12 or more spikelets congregated into a short spike or nearly a capitulum. Spikelets radially spreading, narrowly ovoid to narrowly oblong-ovoid, 0.5-1.8 cm × 2.5-3 mm, 6-24-flowered; rachilla straight, 4-angled, wingless. Glumes straw-colored, brownish yellow, or blackish brown on both surfaces but middle yellowish green, slightly laxly imbricate, ovate, ca. 2 mm, membranous, medially 3-5-veined, often distinctly furrowed on both sides of keel, margin dark blood-red to dark brownish red, apex obtuse. Stamens (2 or)3; anthers linear, 0.7-1 mm. Style long; stigmas 2, exserted, slender. Nutlet black at maturity, globose-obovoid to broadly ellipsoid, 1-1.3 mm, 1/2-3/5 as long as subtending glume, biconvex, slightly turgid, minutely punctate. Fl. and fr. Jul-Dec. 2n = 48, 50.
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Annuals. Roots fibrous. Culms densely tufted, 5-50 cm tall, compressed 3-angled, smooth, with several leaves basally. Leaves several, usually shorter than culm to rarely longer; sheath usually reddish brown, short; leaf blade 2-4 mm wide or less, flat, apical margin denticulate. Involucral bracts 2-5, leaf-like, longer than inflorescence, subspreading. Inflorescence a simple anthela; rays 3-5, mostly to 4.5 cm to sometimes very short and inflorescence a capitulum, each with 4-12 or more spikelets congregated into a short spike or nearly a capitulum. Spikelets radially spreading, narrowly ovoid to narrowly oblong-ovoid, 0.5-1.8 cm × 2.5-3 mm, 6-24-flowered; rachilla straight, 4-angled, wingless. Glumes straw-colored, brownish yellow, or blackish brown on both surfaces but middle yellowish green, slightly laxly imbricate, ovate, ca. 2 mm, membranous, medially 3-5-veined, often distinctly furrowed on both sides of keel, margin dark blood-red to dark brownish red, apex obtuse. Stamens (2 or) 3; anthers linear, 0.7-1 mm. Style long; stigmas 2, exserted, slender. Nutlet black at maturity, globose-obovoid to broadly ellipsoid, 1-1.3 mm, 1/2-3/5 as long as subtending glume, biconvex, slightly turgid, minutely punctate.
Life form
Growth form herb
Growth support free-standing
Foliage retention deciduous
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) 0.1 - 0.5
Mature height (meter) 0.05 - 0.5
Root system fibrous-root
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months -
Fruit color -
Fruiting months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Nitrogen fixer -
Photosynthetic pathway c4

Environment

Light 4-9
Soil humidity 7-10
Soil texture 1-2
Soil acidity 2-8
Soil nutriment -
Hardiness (USDA) 9-12

Usage

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

Cultivation

Can be grown by divisions.
Mode divisions
Germination duration (days) -
Germination temperacture (C°) 17 - 21
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Distribution

Pycreus sanguinolentus world distribution map, present in China, Spain, Indonesia, India, Philippines, Papua New Guinea, Thailand, and South Africa

Identifiers

LSID urn:lsid:ipni.org:names:311762-1
WFO ID wfo-0000507400
COL ID 6X2LV
BDTFX ID -
INPN ID 706741
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Cyperus sanguinolentus f. cyrtostachys Cyperus sanguinolentus f. rubromarginatus Cyperus pumilus Pycreus sanguinolentus Cyperus eragrostis f. melanocephalus Pycreus sanguinolentus Pycreus sanguinolentus f. sanguinolentus Cyperus rubromarginatus Cyperus sanguinolentus f. humilis Cyperus sanguinolentus f. neurotropis Pycreus rehmannii Cyperus eragrostis var. cyrtostachys Cyperus eragrostis var. flaccidulus Cyperus eragrostis var. humilis Cyperus eragrostis var. micronux Cyperus flavescens var. rubromarginatus Cyperus sanguinolentus subsp. cyrtostachys Cyperus sanguinolentus var. korshinskyi Cyperus sanguinolentus subsp. melanocephalus Cyperus sanguinolentus subsp. sacer Cyperus sanguinolentus subsp. teysmannii Cyperus sanguinolentus var. teysmannii Cyperus sanguinolentus var. micronux Pycreus sanguinolentus f. humilis Pycreus sanguinolentus f. melanocephalus Pycreus sanguinolentus f. rubromarginatus Cyperus eragrostis Cyperus sanguinolentus f. flaccidulus Cyperus sanguinolentus f. melanocephalus Cyperus latespicatus var. setiformis