Sempervivum ciliosum are one of the species of Sempervivum. Ciliosum means "hairs", so the cili's are semps that tend to be covered with tiny cilia or hairs on the plants. This can be more or less noticeable, depending on variety. Just because a sempervivium has hairs on it, however, does not guarantee it is a ciliosum. Other species of Sempervivum can have cilia as well.
Ciliosum tend to form rosettes that are more round like a ball than many other Sempervivum which has an interesting appearance when forming clumps. In addition, ciliosum flowers are yellow, which is unusual for most Sempervivum.
Some known varieties of ciliosum:
S. ciliosum (species type)
S. ciliosum f/ Ali Botusch (multiple offsets on long stolons, from Ali Botusch)
S. ciliosum from Orelek
S. ciliosum from Rila Village
S. ciliosum from Strumska Dolina
S. ciliosum from Toumba Varnous
S. ciliosum subsp. octopodes
S. ciliosum subsp. octopodes var. apetalum
S. ciliosum var. bandericianum
S. ciliosum var. borisii (noted for long cilia)
S. ciliosum var. galicicum from Mali Hat, Albania (globular in form, looks almost like a cactus)
Known hybrids in the hobby:
S. ciliosum x S. marmoreum ssp. erythraeum
S. ciliosum var. 'Borisii' photo taken by insiderart (Terri)
