Worldwide ranges of P. squarrosa (blue) and P. luteola (red).
Pleurochaete squarrosa is widely distributed in:
In Europe, its distribution extends to thermophilous sites as far north as England and Wales, the Netherlands, and northern Germany.
Its sister species - Pleurochaete luteola is entirely neotropical (south-eastern United States, around the Gulf of Mexico and scattered throughout South America.)
It is a terricolous (growing on soil), thermophilous, and photophilous genus with a Mediterranean to sub-Mediterranean distribution type.
Its main habitats are open, dry grasslands and open pastures on limestone ground, particularly those with rocky outcrops.
Common in Mediterranean macchia and pinewood vegetation, it is also abundant in human-made habitats like vineyards, secondary open grasslands along roads, disturbed places and recently burned areas.
Although it is most common in limestone areas, it is fairly indifferent to soil pH and is widespread on sandy soils, including dunes.
A man-made habitat: A vineyard in the Neckar valley, SW-Germany.