BugwoodWiki Article

Spanish broom
Spartium junceum L.

Overview

Appearance
Spartium junceum is a perennial shrub, that can grow up to 9.8 ft. (3 m) high. It has thick waxy stems.
Foliage
Spanish broom has long, slender, leafless or few-leaved, green branches. The shrub is virgately branched and contains no spines, unlike gorse (Ulex europaeus). The alternate leaves are simple, entire and more or less strigose, having short petioles. The narrower leaves are 0.4-1.2 in. (1-3 cm) long.
Flowers
The fragrant yellow flowers are borne in loose terminal racemes, unlike those of Cytisus scoparius which are usually solitary in the axils. Individual flowers are 0.8-1 in. (2-2.5 cm) long.
Fruit
Seeds can remain viable in soil for more than 80 years.
Ecological Threat
S. junceum is adapted to dryer sites where its lack of leaves and thick waxy stems resist dessication. Like other broom species, it offers strong competition to other plants and contributes to increased maintenance costs on lands where it becomes established. Dry summer plants create a severe fire hazard.

General Description:The following description of Spartium junceum is adapted from Munz and Keck (1973).

Spartium junceum is a perennial shrub, up to 3 m high, with long, slender, leafless or few-leaved, green, rushlike branchlets. The shrub is virgately branched and contains no spines, unlike gorse (Ulex europaeus). The alternate leaves are simple, entire and more or less strigose, having short petioles. The oblance-oblong or narrower leaves are 1-3 cm long.

The fragrant yellow flowers are borne in loose terminal racemes, unlike those of Cytisus scoparius which are usually solitary in the axils. Individual flowers are 2-2.5 cm long. The banner and keel are longer than the wings, and the keel is pubescent along its lower edge. The calyx is split above, hence one-lipped, with 5 minute teeth. This may be contrasted with the two-lipped calyx of Cytisus monspessulanus. The stamens are monadelphous (united by their filaments forming a tube around the gynoecium).

The linear pods are 5-10 cm long, more or less strigose, compressed, and many seeded. Each seed has a basal strophiole (appendage at the hilum).

Resources

Selected Images


5392613
5392613

Spanish broom
Spartium junceum
Plant(s)
John M. Randall
5392611
5392611

Spanish broom
Spartium junceum
Infestation
John M. Randall
5391777
5391777

Spanish broom
Spartium junceum
Plant(s)
Barry Rice
5391778
5391778

Spanish broom
Spartium junceum
Plant(s)
Barry Rice
5391779
5391779

Spanish broom
Spartium junceum
Plant(s)
Barry Rice
5392609
5392609

Spanish broom
Spartium junceum
Flower(s)
John M. Randall
5392610
5392610

Spanish broom
Spartium junceum
Fruit(s)
John M. Randall
5392612
5392612

Spanish broom
Spartium junceum
Flower(s)
John M. Randall

Maps


EDDMapS Distribution - This map is incomplete and is based only on current site and county level reports made by experts, herbaria, and literature. For more information, visit www.eddmaps.org

EDDMapS Distribution

State Regulated List - This map identifies those states that list this species on their regulated list. For more information, visit Invasive.org

State Regulated List

Taxonomic Rank

Kingdom: Plantae
Phylum: Magnoliophyta
Class: Magnoliopsida
Subclass: Rosidae
Order: Fabales
Family: Fabaceae (Leguminosae)
Genus: Spartium

Other System Links

Plants: SPJU2
Bayer: SPUJU
GRIN: 35189
ITIS: 26967
NPDN Pest: PCQBUBQ
NPDN Host: 37362

Synonyms and Other Names

Other Common Names:
weaver's broom

Categories

Category: Shrub or Subshrub