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Danthonia decumbens Dc.

Common heathgrass (en), Danthonie retombante (fr), Ambrosine de Bassi (fr), Ambrosinia de Bassi (fr)

Species

Angiosperms > Poales > Poaceae > Danthonia

Characteristics

Plants loosely caespitose. Culms 0.5 m high. Leaf blades 10–20 cm long, 2–3 mm wide. Inflorescences subracemose, contracted. Spikelets 9–10 mm long, with 4–6 florets. Glumes shorter than to equalling florets; lower glume 9 mm long. Lemma 4 mm long, awnless; indumentum on back as a long submarginal line of hairs. Palea elliptic to ovate, glabrous between keels. Anthers 0.3 mm long, entangled in stigmas. Caryopsis 2–2.1 mm long.
More
Culms 2–5 dm; lvs 1–3 mm wide; raceme 2–4 cm, with 3–8 pediceled spikelets; glumes rounded below, keeled distally, 7–11 mm, the first slightly the longer; lemmas 4–6 mm, minutely 3-toothed; 2n=18, 24, 36, 124. Boggy or peaty soil; Europe; also in Nf. and N.S., where possibly native. (Sieglingia d.)
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention -
Sexuality hermaphrodite
Pollination autogamy
Spread myrmecochory
Mature width (meter) -
Mature height (meter) 0.15 - 0.5
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway c3

Environment

Light -
Soil humidity 1-5
Soil texture -
Soil acidity -
Soil nutriment -
Hardiness (USDA) 5-10

Usage

Uses forage
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

Habit

Danthonia decumbens habit picture by Genghis Attenborough (cc-by-sa)
Danthonia decumbens habit picture by alderash (cc-by-sa)

Leaf

Danthonia decumbens leaf picture by blueplatypus (cc-by-sa)
Danthonia decumbens leaf picture by alderash (cc-by-sa)

Flower

Danthonia decumbens flower picture by Genghis Attenborough (cc-by-sa)
Danthonia decumbens flower picture by Genghis Attenborough (cc-by-sa)
Danthonia decumbens flower picture by Corentin Ollive (cc-by-sa)

Distribution

Danthonia decumbens world distribution map, present in Australia, Canada, France, New Zealand, and United States of America

Identifiers

LSID urn:lsid:ipni.org:names:397531-1
WFO ID wfo-0000861886
COL ID CPRG
BDTFX ID 4085
INPN ID 82096
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Sieglingia decumbens f. gigantea Danthonia decipiens Festuca decumbens Triodia decumbens Danthonia glaberrima Triodon decumbens Sieglingia decumbens Avena spicata Danthonia decumbens f. breviglumis Danthonia decumbens f. longiglumis Triodia glaberrima Melica rigida Bromus decumbens Poa decumbens Brachatera decumbens Melica decumbens Danthonia decumbens subsp. decipiens Danthonia decumbens var. breviglumis Sieglingia decumbens subsp. decipiens Sieglingia decumbens subsp. mauritanica Sieglingia decumbens var. breviglumis Sieglingia decumbens var. longiglumis Triodia decumbens var. breviglumis Triodia decumbens var. longiglumis Sieglingia decumbens f. longiglumis Sieglingia decumbens var. mauritanica Danthonia decumbens var. breviglumis Sieglingia decumbens subsp. longiglumis Danthonia decumbens
WorldFloraDB 2024