Holcus lanatus L.

Common velvetgrass (en), Houlque velue (fr), Blanchard (fr), Houlque laineuse (fr)

Species

Angiosperms > Poales > Poaceae > Holcus

Characteristics

Tufted, sometimes stoloniferous, softly hairy, greyish green perennials, 35-110 cm. Leaf-sheath firmly membranous, striate, ± keeled above near ligule, villous with long, fine, silky hairs, basal sheaths often purplish. Ligule (0.6)-1-3 mm, ± truncate, denticulate, apex finely ciliate and occasionally with a few long hairs, abaxially villous. Leaf-blade (2.5)-4.5-15-(20) cm × (1.5)-3-10 mm, pubescent and with longer soft hairs, narrowed to acuminate tip; margins finely ciliate, and with longer hairs. Culm erect, or ascending from geniculate base, nodes and internodes pubescent. Panicle 4-18 × 1.5-7 cm, lanceolate, ovoid or sometimes oblong, dense to lax, erect or nodding; rachis and branches pubescent. Spikelets 3.8-5.5 mm, whitish, pale green, or purplish. Glumes stiff-ciliate on keels and lateral nerves of upper glume, elsewhere minutely scabrid to shortly pubescent; lower sometimes slightly shorter, narrow-lanceolate, acute to mucronate, upper broader, elliptic, mucronate, or awned to 0.8 mm. Lemma 2-2.7 mm, elliptic-lanceolate, glabrous, shining, keel sparsely finely prickle-toothed, apex minutely ciliate-scabrid; lower lemma awnless, upper lemma narrower, awn stout, 1.4-2.8 mm, inserted c. 0.4 mm below tip of lemma, becoming recurved and uncinate. Palea keels sparsely short-ciliate above, apex obtusely lobed, minutely ciliate. Callus hairs few, to 1 mm. Rachilla glabrous. Anthers 1-2.2 mm. Caryopsis 1-1.5 × 0.4-0.5 mm.
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Perennial, caespitose, erect or geniculate. Culms 20–100 cm high. Young shoots extravaginal. Leaves mostly basal; basal sheaths puberulous and pilose, with hairs of two distinct lengths (shorter hairs c. 0.1. mm long and long hairs to 1 mm long); ligule truncate, dentate, abaxially hairy; blade 4–15 cm long, 3–10 mm wide, puberulous and pilose (with hairs of two distinct lengths). Panicles 2.5–27 cm long; primary branches scabrous and shortly pilose (with hairs of two lengths, the longer to 0.4 mm long, straight). Spikelets 3.7–5.2 mm long. Glumes: lower glume 3.4–4.4 mm long, muticous or apiculate, with midnerve scaberulous and shortly pilose with longer hairs toward apex; upper glume 3.7–5 mm long, obtuse, apiculate (midrib very shortly extended, to 0.4 mm long). Lemma ovate, 2–2.5 mm long, acute, keeled in upper half, 5-nerved; callus with 4 rigid hairs c. 1.3 mm long. Upper floret male; callus with short hairs c. 0.3 mm long; lemma 1.1–2 mm long, keeled at apex; lemma awn c. 1 mm long, arising in upper 1/4 of lemma, with column usually not twisted, uncinate or curved.
Perennial, softly hairy. Culms tufted, erect or geniculate at base, 30–80 cm tall, pubescent, 4–5-noded. Leaf sheaths loose, tomentose with reflexed hairs; leaf blades flat, 6–18 cm, 3–9 mm wide, soft, both surfaces pubescent, apex acute; ligule 2–3 mm, truncate or toothed. Panicle lanceolate to oblong or ovate in outline, rather loose to very dense, 3–12 cm; branches narrowly ascending, pubescent. Spikelets oblong or gaping, 3.5–6 mm, pale grayish green or purplish; glumes lanceolate, keel and veins hispidulous, surface scabrid or puberulent to villous, lower glume apex acute, upper glume wider and sometimes slightly longer than lower glume, apex mucronate; florets subequal, 2–2.5 mm; rachilla ca. 0.5 mm; lower lemma awnless, anthers 1.8–2 mm; upper lemma with hooked 1–2 mm awn, anthers ca. 1.5 mm. Fl. and fr. May–Oct.
Loosely tufted perennial, 0.3-1.0 m high; culm nodes pubescent. Leaf blade 1.5-8.0 mm wide; conspicuously woolly-hairy, greyish to blue-green; ligule an unfringed to a fringed membrane. Inflorescence a contracted, often dense panicle. Spikelets 3-4 mm long, laterally compressed; glumes ± equal, ± as long as spikelet, keeled, 1-3-nerved; lower glume awn up to 0.5 mm long, rarely up to 1 mm; upper glume awn up to 1 mm long. Florets 2; lower floret bisexual, firmer than glumes, awnless; upper floret male, lemma awned from back near apex; awn short, stout, hooked, geniculate, twisted or straight, barely projecting beyond apices of glumes; anther 1.0-1.5 mm long. Flowering time Nov.-Jan.
Culms 4–10 dm, without rhizomes, soft-villous below, the upper internode usually glabrous; sheaths soft-hairy; blades pale green, soft-hairy, 4–10 mm wide; infl narrowly ovoid, dense, 5–15 cm; glumes 4–5 mm, acute, villous on the surface, short-hirsute on the veins; lemmas smooth and shining, 2 mm, obtuse, the awn of the upper one hooked, 1–2 mm, scarcely exserted from the glumes; 2n=14. Meadows and roadsides in moist soil; native of Europe, now well established throughout our range.
Loosely tufted perennial 300-1000 mm high; culm nodes pubescent. Leaf blade 1.5-8.0 mm wide; conspicuously woolly hairy, greyish to blue-green. Inflorescence whitish, green pink or purple. Spikelet 3-4(6) mm long; lower glume awn to 0.5 mm long, rarely to 1 mm, 1-nerved; upper glume awn to 2 mm long; upper floret male; upper lemma awn hooked, barely projecting beyond apices of glumes; anther 1.0-1.5 mm long.
Perennial, loosely tufted, up to 1 m high. Leaf blades 1.5-8.0 mm wide. Leaves conspicuously woolly, greyish to blue-green. Spikelets 3-4 mm long; lower glume awn never exceeding 0.5 mm; upper glume awn to 1 mm long; upper floret male.
Perennial to 1 m. Leaves linear-lanceolate, softly hairy. Spikelets in a panicle, pink and grey, upper glume awn to 1 mm.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention evergreen
Sexuality
Pollination anemogamy
Spread epizoochory
Mature width (meter) -
Mature height (meter) 0.3 - 1.0
Root system rhizome
Rooting depth (meter) 0.35
Root diameter (meter) 0.2
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color
Fruiting months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Nitrogen fixer -
Photosynthetic pathway c3

Environment

A weed ofroadsides, poor pasture, and occasionally of native communities followingdisturbance, frequently on poorly-drained soils. 
Light 6-8
Soil humidity 2-4
Soil texture 3-6
Soil acidity 2-7
Soil nutriment -
Hardiness (USDA) 5-8

Usage

Uses animal food environmental use fodder medicinal poison
Edible -
Therapeutic use Cyanogenetic (unspecified)
Human toxicity -
Animal toxicity -

Cultivation

Can be grown by divisions or seedlings.
Mode divisions seedlings
Germination duration (days) -
Germination temperacture (C°) -
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -29
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Habit

Holcus lanatus habit picture by Martin Bishop (cc-by-sa)
Holcus lanatus habit picture by Christoph Zirwes (cc-by-sa)
Holcus lanatus habit picture by Dieter Albrecht (cc-by-sa)

Leaf

Holcus lanatus leaf picture by macchia1 (cc-by-sa)
Holcus lanatus leaf picture by Wim Cornelissen (cc-by-sa)
Holcus lanatus leaf picture by Siroli Matteo (cc-by-sa)

Flower

Holcus lanatus flower picture by christian simon (cc-by-sa)
Holcus lanatus flower picture by Stephan Gerbeaud (cc-by-sa)
Holcus lanatus flower picture by Philippe Demois (cc-by-sa)

Fruit

Holcus lanatus fruit picture by Karl Seibel (cc-by-sa)
Holcus lanatus fruit picture by Juergen Adam (cc-by-sa)
Holcus lanatus fruit picture by Siroli Matteo (cc-by-sa)

Distribution

Holcus lanatus world distribution map, present in Åland Islands, Albania, Australia, Austria, Bulgaria, Belarus, Bolivia (Plurinational State of), Brazil, Canada, Switzerland, China, Colombia, Costa Rica, Czech Republic, Germany, Dominica, Denmark, Algeria, Ecuador, Spain, Finland, Falkland Islands (Malvinas), France, Micronesia (Federated States of), United Kingdom of Great Britain and Northern Ireland, Georgia, Greece, Haiti, Hungary, Ireland, Iceland, Italy, Jamaica, Japan, Morocco, Malaysia, Nicaragua, Netherlands, Norway, New Zealand, Panama, Peru, Poland, Puerto Rico, Korea (Democratic People's Republic of), Portugal, Réunion, Romania, Russian Federation, Sweden, Turks and Caicos Islands, Tunisia, Taiwan, Province of China, Ukraine, Uruguay, United States of America, Venezuela (Bolivarian Republic of), and South Africa

Identifiers

LSID urn:lsid:ipni.org:names:405034-1
WFO ID wfo-0000874509
COL ID 3M7ZD
BDTFX ID 34724
INPN ID 102900
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Holcus lanatus f. viviparus Aira holcus-lanatus Holcus aestivalis Holcus argenteus Holcus tuberosus Avena pallida Ginannia lanata Ginannia pubescens Holcus lanatus Nothoholcus lanatus Notholcus lanatus Avena lanata Holcus muticus Holcus oriolis Avena lanata Holcus glaucus Holcus lanatus var. albovirens Holcus lanatus var. soboliferus Holcus lanatus var. tuberosus Holcus lanatus subsp. tuberosus Holcus lanatus var. vaginatus Holcus lanatus subsp. vaginatus Holcus intermedius