Schoenoplectus trapezoideus (Koidz.) Hayas. & H.Ohashi

Species

Angiosperms > Poales > Cyperaceae > Schoenoplectus

Characteristics

Rhizomes short. Culms tufted, erect, 40-70 cm tall, ± slender, 3-5-angled, clothed at base with bladeless leaf sheaths. Leaf sheaths pale brown at base, to 12 cm, oblique at mouth. Involucral bract 1, erect, culmlike, 5-15 cm. Inflorescence a pseudolateral head, with 2-9 spikelets. Spikelets sessile, pale rust-colored brown, oblong-ovoid to ovoid, 8-14 × 4-6 mm. Glumes pale rust-colored brown, broadly elliptic, 3-4 mm, thinly leathery, with a green costa excurrent into a mucro, apex acute. Perianth bristles 6, ca. 2/3 as long as nutlet, retrorsely scabrous. Stamens 3; anthers 1.2-1.5 mm. Style ca. 3 mm; stigmas (2 or)3. Nutlet blackish brown, broadly obovoid to subspherical, ca. 2 mm, biconvex or unequally biconvex, obscurely wrinkled. Fl. and fr. Aug-Oct.
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Growth form herb
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Foliage retention deciduous
Sexuality hermaphrodite
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Mature height (meter) 0.4 - 0.7
Root system rhizome
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Fruiting months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
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Environment

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Hardiness (USDA) 9-12

Usage

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Edible -
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Cultivation

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Distribution

Schoenoplectus trapezoideus world distribution map, present in China, Indonesia, and Japan

Identifiers

LSID urn:lsid:ipni.org:names:1016400-1
WFO ID wfo-0000528455
COL ID 6XWDP
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Schoenoplectus trapezoideus Schoenoplectus x trapezoideus Scirpus erectus var. triangulatus Schoenoplectus juncoides subsp. triangulatus Scirpus juncoides var. triangulatus Scirpus hotarui var. triangulatus