Sempervivum arachnoideum subsp. tomentosum
Sempervivum arachnoideumsubsp.tomentosum(C.B.Lehm . & Schnittsp . ) Schinz & Thell . Woolly Cobweb Houseleek , Cobweb Hen and wench Sempervivum tomentosum , Sempervivum laggeri , Sempervivum arachnoideumvar.laggeri , Sempervivum webbianum Photo viagarden.org Family : CrassulaceaeSubfamily : SedoideaeTribe : SedeaeSubtribe : SedinaeGenus : Sempervivum This subspecies is aboriginal to the mess of central and southernEurope . Sempervivum arachnoideumsubsp . tomentosumis a mat - forming succulent that forms rosettes of thick-skulled , fleshy , obovate , mid - unripe to red leave densely get over in white cobweb - like hairs ....