Aspects of this topic are discussed in the following places at Britannica.
...with lavender to white, bowl-shaped, long-stalked flowers, several to the stem, has many forms. The plants, 15 to 25 cm (6 to 10 inches) tall, form clumps in eastern European meadows and woodlands. Fairy thimbles (C. cochleariifolia), named for its deep, nodding, blue to white bells, forms loosely open mats on alpine screes. Bethlehem stars (C. isophylla), a trailing Italian...
We welcome your comments. Any revisions or updates suggested for this article will be reviewed by our editorial staff. Contact us here.
Regular users of Britannica may notice that this comments feature is less robust than in the past. This is only temporary, while we make the transition to a dramatically new and richer site. The functionality of the system will be restored soon.