Genista sagittalis

The most useful field mark for Genista sagittalis is its winged, arrow-shaped stems — flattened, ridged stems that give the plant its common names, arrow-jointed broom and winged broom. This feature alone separates it from many other low-growing legumes at a glance.

As a subshrub, it stays close to the ground, forming small clumps or mats rather than an upright bush. Its flowers follow the typical pea-family form, borne in small yellow clusters along the winged stems.

Genista sagittalis is native to a broad swath of west-central and southern Europe, occurring in Albania, Austria, Belgium, Bulgaria, Czechia, Slovakia, France, Germany, Greece, Italy, the Netherlands, the northwestern Balkan Peninsula, Romania, Spain, Switzerland, Ukraine, and northwestern Türkiye. It has also become established outside its native range in Poland.

The species occupies a temperate climate zone spanning west-central and southern Europe to northwestern Türkiye. Observation records show a seasonal pattern, with counts rising sharply in late spring and peaking around June, consistent with the plant's active growing and flowering period, before tapering off through the autumn and winter months. These figures reflect how often the plant was observed and reported, not its actual abundance or the full extent of its range.

Genista sagittalis grows as a subshrub — a low, woody-based plant that stays close to the ground rather than developing into a tall shrub or tree. Its winged stems likely contribute to its compact, mat-forming habit, a growth strategy well suited to open grassland and scrub habitats across its European range.

The winged broom supports a notably wide range of bee visitors to its flowers, including several Andrena mining bees, Anthidium loti, Anthophora aestivalis, and bumblebees such as Bombus terrestris and the scarce Bombus inexspectatus. A flower visit does not confirm pollination, but the sheer number of bee genera recorded suggests the plant is a useful nectar or pollen source within its grassland habitats.

It also serves as food for a variety of animals. Birds recorded feeding on it include the common redpoll, skylark, rock partridge, mallard, greylag goose, citril finch, and common rosefinch. Moths such as Aspitates gilvaria and Charissa pullata are also recorded, along with the green hairstreak butterfly, Callophrys rubi, whose caterpillars are known to use broom species as host plants.

In some cultures, the winged broom is associated with good luck, and it has been planted in gardens for this positive symbolism rather than for any practical or culinary use.

1. The plant's full scientific name, given by Linnaeus, is Genista sagittalis L.
2. Its two most distinctive common names, arrow-jointed broom and winged broom, both come from the unusual flattened, angled stems rather than from its leaves or flowers.
3. A subspecies, Genista sagittalis subsp. delphinensis, known as rock broom, has been singled out by the Royal Horticultural Society with its Award of Garden Merit.