Schoenus apogon Roem. & Schult.

Smooth bogrush (en)

Species

Angiosperms > Poales > Cyperaceae > Schoenus

Characteristics

Annuals or short-lived perennials, slender. Roots fibrous. Culms tufted, 20-40 cm tall, 0.5-1 mm thick, mostly 2-nodose, smooth. Leaves basal and cauline. Cauline leaves 2, shorter than culm; sheath reddish purple, 1-2 cm; leaf blade capillary, ca. 0.5 mm wide. Involucral bracts surpassing inflorescence; sheath reddish purple, 0.5-1 cm. Inflorescences consisting of 2-5 distant corymbiform partial panicles, each bearing several sessile and shortly pedunculate spikelets; partial panicles 0.8-1.5 cm and as broad. Spikelets reddish brown, narrowly ovoid, 4-6 mm, flattened, 1-or 2(or 3)-flowered. Glumes sanguineous with pale margin, lanceolate to ovate-lanceolate, 3-4 mm, papery, apex obtuse; basal 2 or 3 glumes empty, rather short. Perianth bristles 6, ca. 2 mm, antrorsely scabrous. Stamens 3. Style ca. 1.5 mm, base glabrous; stigmas 3, as long as style. Nutlet whitish, globose-obovoid, ca. 1 mm, obtusely 3-sided, sides convex, shiny, and minutely reticulate. Fl. and fr. May.
More
Culms ∞, densely tufted, rather flaccid, unbranched, glab. or occ. scabrid just below infl. Lvs 4–18 cm. long, very narrow-linear, acute, channelled, margins slightly scabrid; sheaths membr., reddish. Panicle of us. 2, distant or ± approximate fascicles, the terminal one us. with almost sessile, densely clustered spikelets, lower fascicles often with stalked, loosely clustered spikelets; bract subtending each fascicle lf-like, lowest bract us. overtopping whole infl. Glumes dark red-brown to almost black, us. with a paler centre, midrib often slightly scabrid, 1–3 lowermost glumes smaller, empty, often mucronate. Hypog. bristles 6, > nut. Stamens 3. Style-branches 3. Nut slightly < 1 mm. long, c. 0.5 mm. wide, elliptic-ovoid, almost globose, obtuse, apiculate, white, the 3 angles green or yellow.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention deciduous
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.2 - 0.4
Root system fibrous-root
Rooting depth (meter) -
Root diameter (meter) -
Flower color -
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Fruit color -
Fruiting months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Nitrogen fixer -
Photosynthetic pathway -

Environment

Light -
Soil humidity -
Soil texture -
Soil acidity -
Soil nutriment -
Hardiness (USDA) 7-12

Usage

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

Cultivation

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

Images

Schoenus apogon unspecified picture

Distribution

Schoenus apogon world distribution map, present in China, Japan, New Zealand, Taiwan, Province of China, United States of America, and Viet Nam

Identifiers

LSID urn:lsid:ipni.org:names:312709-1
WFO ID wfo-0000529165
COL ID 4VF22
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Schoenus brownii Chaetospora imberbis Helothrix imberbis Schoenus apogon

Lower taxons

Schoenus apogon var. apogon Schoenus apogon var. caespitans