Gentiana Acaulis Small 255×320 Medium 509×640 Large 815×1024 Download Tiff Original 1909×2400 | (2.0 MB) Description The common name of gentiana acaulis is gentianella. The flowers are blue with five yellow marks inside. The flowers are two inches long. Each stem has one flower. Keywords flower, gentiana acaulis, gentianella Galleries Flowers and Shrubs: G Source: Nicholson, George The Illustrated Dictionary of Gardening, Div. VI (London, England: L. Upcott Gill, 1884)