Striga hermonthica (Delile) Benth.

Purple witchweed (en)

Species

Angiosperms > Lamiales > Orobanchaceae > Striga

Characteristics

Flowers bright pink (rarely white), opposite or nearly so, 8-l6 open at same rime per inflorescence branch, variable in size, faint sweet fragrance in early morning.
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Corolla tube 1–2 cm. long, bent just above calyx teeth, outside with very scattered hairs; upper lobe emarginate, erect, lower lobes 10–13 x 8–10 mm.
An erect herb. It grows partly on other plants. It has a few branches. It grows 30-40 cm high. It can be 1 m high. The flowers are bright pink.
Leaves rather thick, 6–9 x 1.1–1.5 cm., both surfaces scabrous, margins with hispid hairs at regular intervals.
Bracts almost as long as calyx with prominent hispid hairs on margin, apex curved away from stem.
Calyx 10–12 x 2.5 mm., intracostal portion whitish and translucent.
Stiffly erect, dark green, much branched herb, 20–50 cm. tall.
Stem quadrangular with groove on each face, scabrous.
Bracteole half length of calyx.
Capsule 12–15 x 2–2.5 mm.
Life form annual
Growth form herb
Growth support parasite
Foliage retention -
Sexuality hermaphrodite
Pollination entomogamy
Spread -
Mature width (meter) -
Mature height (meter) 0.3 - 0.5
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

Occasionally found in wild grassland, but most commonly as a parasitic weed of cultivated cereal crops.
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It is a tropical plant. It grows in dry grassy areas in West Africa.
Light -
Soil humidity -
Soil texture -
Soil acidity -
Soil nutriment -
Hardiness (USDA) 9-12

Usage

Uses animal food dye food material medicinal
Edible leaves
Therapeutic use Headache (unspecified)
Human toxicity -
Animal toxicity -

Cultivation

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

Images

Leaf

Striga hermonthica leaf picture by Denis Bastianelli (cc-by-sa)

Flower

Striga hermonthica flower picture by Denis Bastianelli (cc-by-sa)
Striga hermonthica flower picture by Denis Bastianelli (cc-by-sa)

Distribution

Striga hermonthica world distribution map, present in Angola, Anguilla, Benin, Burkina Faso, Central African Republic, Côte d'Ivoire, Cameroon, Congo, Djibouti, Eritrea, Ethiopia, Gambia, Guinea-Bissau, Kenya, Mali, Mauritania, Namibia, Niger, Rwanda, Saudi Arabia, Sudan, Senegal, South Sudan, Seychelles, Chad, Togo, Tanzania, United Republic of, Uganda, and Yemen

Identifiers

LSID urn:lsid:ipni.org:names:810025-1
WFO ID wfo-0001138081
COL ID 52ZKH
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Striga senegalensis Buchnera hermonthica Striga campuleia Striga hermonthica