WorldFloraDB - Digitaria radicosa

Characteristics

Annual. Culms slender, trailing, branching, 30–50 cm tall, glabrous. Leaf sheaths usually glabrous; leaf blades linear-lanceolate, 2–6 × 0.3–0.7 cm, abaxial surface scabrous, adaxial surface glabrous, pubescent or papillose-pilose at base; ligule 0.75–2 mm. Inflorescence digitate; racemes 2–3(–4), slender, 4–10 cm; spikelets paired, loosely imbricate by about half their length; rachis triquetrous, narrowly winged, ca. 0.6 mm broad, margins smooth or almost so. Spikelets narrowly lanceolate, 2.8–3 mm; lower glume triangular, 0.2–0.3 mm; upper glume narrow, long triangular, 1/3–2/3 as long as spikelet, 1–3-veined, villous throughout; lower lemma as long as spikelet, 5–7-veined, a broad intervein space on either side of midvein, lateral veins very close together near margin, appressed silky pubescent, very rarely with a ciliate fringe, never setose; upper lemma yellowish at maturity, narrowly lanceolate. Anthers 0.5–1 mm. Fl. and fr. summer–autumn. 2n = 18.

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Trailing annual; culms 20–40 cm. long, very slender.. Leaf-blades narrowly lanceolate, 2–7 cm. long, 2–5 mm. wide.. Inflorescence digitate, of 2–4 racemes; racemes 3–9 cm. long, the spikelets binate and loosely overlapping by about 1/2 their length on a narrowly winged triquetrous rhachis with almost smooth edges.. Spikelets narrowly lanceolate, 2.5–3 mm. long; lower glume an inconspicuous ovate scale up to 0.2 mm. long; upper glume 1/3–2/3 as long as the spikelet, 3-nerved; lower lemma as long as the spikelet, 5(–7)-nerved, with a wide central interspace and the lateral nerves so close together that the lemma is apparently 3-nerved, appressed or silky pubescent, very rarely with a ciliate fringe, never with bristles; fruit narrowly lanceolate, yellowish or pale brown.

Life form	annual
Growth form	herb
Growth support	free-standing
Foliage retention	evergreen
Sexuality	hermaphrodite
Pollination	-
Spread	-
Mature width (meter)	-
Mature height (meter)	0.23 - 0.4
Root system	-
Rooting depth (meter)	-
Root diameter (meter)	-
Flower color	-
Blooming months	-
Fruit color	-
Fruiting months	-
Nitrogen fixer	-
Photosynthetic pathway	-

Environment

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

Usage

Uses	gene source medicinal
Edible	-
Therapeutic use	Debility (unspecified), Cataract (unspecified)
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	-

Distribution

Identifiers

LSID	urn:lsid:ipni.org:names:399085-1
WFO ID	wfo-0000864323
COL ID	363R4
BDTFX ID	119605
INPN ID	446292
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Digitaria formosana Digitaria radicosa Digitaria tenuispica Digitaria timorensis Panicum timorense Syntherisma formosanum Syntherisma multinervis Syntherisma tenuispicum Panicum formosanum Spartina glabriuscula Syntherisma multinerve Panicum radicosum Digitaria chinensis var. hirsuta Digitaria formosana var. hirsuta Digitaria radicosa var. hirsuta Digitaria sanguinalis var. multinervis Digitaria sanguinalis var. timorensis Digitaria timorensis var. hirsuta Panicum formosanum var. hirsutum Panicum radicosum var. procerior Panicum sanguinale var. multinerve Panicum sanguinale var. timorense Paspalum sanguinale var. timorense Syntherisma formosana subsp. hirsuta Syntherisma sanguinalis var. multinervis Digitaria propinqua Syntherisma formosana var. hirsuta Panicum radicosum var. procerior Digitaria timorensis var. timorensis Digitaria timorensis subsp. timorensis Syntherisma formosanum var. hirsutum Syntherisma formosanum subsp. hirsutum Syntherisma sanguinale var. multinerve

WorldFloraDB 2024

Digitaria radicosa Miq.

Trailing crabgrass (en), Fonio de Formose (fr)

Species