Biological flora of the British isles: Vulpia ciliata Dumort.ssp.ambigua (le Gall) Stace & Auquier (Vulpia ambigua (Le Gall) More, Festuca ambigua Le Gall)

The grass subspecie (ssp.) Vulpia ambigua is devoid of long hairs on its stiffly erect and very narrow inflorescence. It exhibits a purplish coloring at fruiting. It is generally smaller in all its parts as compared to the subspecie Vulpa ciliata. A distinctive feature of the ssp. ambigua is the very unequal length of its two glumes. V. ciliata belongs to the Mediterranean-Atlantic portion of the United Kingdom while ssp. ambigua is limited to England, Wales and the Channel Islands.