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Trichophorum pumilum Schinz & Thell.

Rolland's bulrush (en), Scirpe alpin (fr), Trichophore nain (fr), Scirpe nain (fr), Petit trichophore (fr)

Species

Angiosperms > Poales > Cyperaceae > Trichophorum

Characteristics

Rhizomes creeping, long, slender. Culms rather densely caespitose, 5-15 cm tall, slender, terete, grooved when dry. Leaves basal, semiterete, only apicalmost bearing a blade; leaf blade 0.7-1.6 cm, shorter than culm, very slender. Involucral bract glumelike, shorter than spikelet, apex mucronate. Inflorescences reduced to a single terminal spikelet, obovoid to ellipsoid, ca. 4.5 × 2.5 mm, few flowered. Glumes ovate to elliptic, ca. 2.5 mm, membranous, both surfaces yellowish brown, with 1 green vein, margin pale hyaline, apex obtuse; basal 2 glumes empty. Perianth bristles absent. Stamens 3; anthers linear-oblong; connective apex slightly evident beyond anthers. Style of medium length; stigmas 3. Nutlet blackish brown, obovoid, ca. 1.5 mm, 3-sided. Fl. and fr. May-Sep.
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Plants loosely cespitose; rhizomes long, slender. Culms grooved, terete, 5–14 cm, smooth. Leaves: basal sheaths brown; distal leaf sheaths truncate to concave at mouth; blades 2–8.4 × 0.4–0.5 mm, much shorter than culms at flowering and fruiting. Inflorescences: spikelets 3–6-flowered, 3–4.6 × 1.7–2.8 mm; bracts shorter than spikelets, 1.6–2.5 mm, apex mucronate. Spikelets: scales brown, apex obtuse. Flowers: perianth bristles absent; anthers 0.8–1.5 mm. Achenes compressed trigonous to plano-convex, (1.2–)1.4–1.9 × 0.8–1.2 mm.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention deciduous
Sexuality
Pollination anemogamy
Spread barochory
Mature width (meter) -
Mature height (meter) 0.05 - 0.15
Root system rhizome
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color -
Fruiting months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Nitrogen fixer -
Photosynthetic pathway c3

Environment

Light -
Soil humidity -
Soil texture -
Soil acidity -
Soil nutriment -
Hardiness (USDA) 4-10

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 -

Images

Trichophorum pumilum unspecified picture

Distribution

Trichophorum pumilum world distribution map, present in Afghanistan, Canada, Switzerland, Chile, China, Colombia, Czech Republic, France, Iran (Islamic Republic of), Italy, Kazakhstan, Kyrgyzstan, Montenegro, Norway, Nepal, Pakistan, United States of America, and Uzbekistan

Identifiers

LSID urn:lsid:ipni.org:names:315481-1
WFO ID wfo-0000591999
COL ID 58H2D
BDTFX ID 68937
INPN ID 127195
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Baeothryon pumilum Eriophorella pumila Trichophorum pumilum Kreczetoviczia pumila Scirpus alpinus Scirpus atrichus Trichophorum atrichum Isolepis pumila Scirpus pumilus Isolepis elongantha Scirpus alpinus subsp. oliganthus

Lower taxons

Trichophorum pumilum subsp. pumilum Trichophorum pumilum subsp. rollandii
WorldFloraDB 2024