Genista tinctoria

When you see dyer's greenweed blossom, you know the summer has begun. However, you will not find this plant in many places in the Netherlands. Texel, Terschelling and Ameland are the best growing areas for dyer's greenweed. It grows in calcium-poor dune valleys. Although there are lots of possible soils for it to grow, it is a rare species that is declining strongly due to human influence: it is very sensitive to intensive grazing and fertilization. Dyer's greenweed was used as a dye in earlier times, which explain's its name.

Genista tinctoria L.:
Canada (North America)
United States (North America)
Russian Federation (Asia)
Kazakhstan (Asia)

Note: This information is based on publications available through Tropicos and may not represent the entire distribution. Tropicos does not categorize distributions as native or non-native.

Canada

Origin: Exotic

Regularity: Regularly occurring

Currently: Unknown/Undetermined

Confidence: Confident

United States

Origin: Exotic

Regularity: Regularly occurring

Currently: Unknown/Undetermined

Confidence: Confident

Perennial, Shrubs, Woody throughout, Taproot present, Nodules present, Stems erect or ascending, Stems or branches arching, spreading or decumbent, Stems less than 1 m tall, Stems 1-2 m tall, Stems solid, Stems or young twigs glabrous or sparsely glabrate, Leaves alternate, Stipules conspicuous, Stipules green, triangulate to lanceolate or foliaceous, Stipules persistent, Stipules free, Leaves simple, or appearing so, Leaf or leaflet margins entire, Leaflets 1, Leaves glabrous or nearly so, Flowers solitary in axils, or appearing solitary, Flowers in axillary clusters or few-floweredracemes, 2-6 flowers, Inflorescences racemes, Inflorescence axillary, Bracts conspicuously present, Bracteoles present, Flowers zygomorphic, Calyx 2-lipped or 2-lobed, Calyx glabrous, Calyx hairy, Petals separate, Corolla papilionaceous, Petals clawed, Petals orange or yellow, Banner petal ovoid or obovate, Wing petals narrow, oblanceolate to oblong, Wing tips obtuse or rounded, Stamens 9-10, Stamens or anthers dimorphic, alternating large and small, Stamens monadelphous, united below, Filaments glabrous, Anthers versatile, Style terete, Style sharply bent, Fruit a legume, Fruit unilocular, Fruit freely dehiscent, Fruit elongate, straight, Fruit oblong or ellipsoidal, Fruit exserted from calyx, Fruit glabrous or glabrate, Fruit 3-10 seeded, Seeds ovoid to rounded in outline, Seed surface smooth, Seeds olive, brown, or black.

In Great Britain and/or Ireland:
Foodplant / parasite
conidial anamorph of Erysiphe trifolii parasitises live Genista sibirica

Foodplant / miner
larva of Agromyza pulla mines leaf of Genista tinctoria
Other: sole host/prey

Foodplant / internal feeder
larva of Apion difficile feeds within pod of Genista tinctoria

Foodplant / open feeder
larva of Calomicrus circumfusus grazes on leaf of Genista tinctoria

In Great Britain and/or Ireland:
Foodplant / feeds on
Heterocordylus genistae feeds on Genista tinctoria
Other: major host/prey

Foodplant / feeds on
larva of Meligethes bidentatus feeds on Genista tinctoria

Foodplant / saprobe
thyriothecium of Microthyrium cytisi var. cytisi is saprobic on dead stem of Genista tinctoria
Remarks: season: 8-10

Foodplant / parasite
underground tuber of Orobanche rapum-genistae parasitises root of Genista tinctoria
Other: minor host/prey

Foodplant / sap sucker
adult of Piezodorus lituratus sucks sap of unripe pod of Genista tinctoria

Foodplant / open feeder
nocturnal larva of Rhogogaster genistae grazes on leaf of Genista tinctoria

Foodplant / parasite
mostly hypophyllous uredium of Uromyces pisi-sativi parasitises live leaf of Genista tinctoria
Other: minor host/prey

The following is a representative barcode sequence, the centroid of all available sequences for this species.

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 6
Specimens with Barcodes: 12
Species With Barcodes: 1

Canada

Rounded National Status Rank: NNA - Not Applicable

United States

Rounded National Status Rank: NNA - Not Applicable

Rounded Global Status Rank: GNR - Not Yet Ranked