Indigofera nigrescens Kurz ex King & Prain

Species

Angiosperms > Fabales > Fabaceae > Indigofera

Characteristics

Shrubs, erect, 1-2 m tall. Stems reddish brown; young branches green, striate, with appressed brown medifixed sym­metrically 2-branched trichomes. Stipules linear, 5-8 mm. Leaves 8-18 cm, 11-23-foliolate; petiole and rachis with sparse appressed medifixed trichomes; petiole 2-2.5 cm; rachis terete or slightly flattened, adaxially grooved; leaflet blades opposite, elliptic to obovate-elliptic, 1.5-2.5 × 0.7-1.3 cm, papery, both surfaces with sparse appressed medifixed trichomes, abaxially usually becoming dark or black or with black spots when dry, base broadly cuneate to rounded, apex obtuse and mucronate. Racemes ca. 19 cm, densely flowered; peduncle ca. 2 cm; bracts linear, 5-7(-9) mm, abaxially with brown medifixed trichomes. Pedicel 1-1.5 mm, with brown medifixed trichomes. Calyx 3-5 mm, with appressed brown and white medifixed trichomes; tube 2.5-3 mm; teeth triangular, most abaxial one ca. 1 mm. Corolla red to purple; standard obovate, 6.5-7 × ca. 4 mm, outside with appressed brown and white medifixed tri­chomes, inside basally hairy, base clawed, apex obtuse; wings 5.5-6 mm, margin ciliate; keel as long as wings, outside api­cally hairy, margin ciliate, spur ca. 1 mm. Stamens 4-5 mm; anthers ovoid-globose, base with a few trichomes. Ovary gla­brous, with 8 or 9 ovules. Legume cylindric, 1.7-2.8 cm, with sparse appressed medifixed trichomes, apex obtuse; endocarp blotched. Seeds 7 or 8 per legume, reddish brown, ovoid, ca. 2.5 mm. Fl. Jun-Sep, fr. Sep-Oct.
Life form perennial
Growth form shrub
Growth support -
Foliage retention deciduous
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 1.0 - 2.0
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color -
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color -
Fruiting months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Nitrogen fixer rhizobia
Photosynthetic pathway -

Environment

Light -
Soil humidity -
Soil texture -
Soil acidity -
Soil nutriment -
Hardiness (USDA) 7-12

Usage

Uses -
Edible -
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Mode -
Germination duration (days) 30 - 90
Germination temperacture (C°) 10
Germination luminosity -
Germination treatment soaking
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Distribution

Indigofera nigrescens world distribution map, present in China, Indonesia, India, Lao People's Democratic Republic, Myanmar, Nepal, Philippines, Thailand, Taiwan, Province of China, and Viet Nam

Identifiers

LSID urn:lsid:ipni.org:names:499719-1
WFO ID wfo-0000197529
COL ID 6MW92
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Indigofera nigrescens Indigofera mekongensis Indigofera formosana