Sempervivum
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Authority
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
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Family
Crassulaceae
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Scientific Name
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Description
Genus Description - Fls 6–40-merous; pet distinct or united only at base; stamens twice as many as the pet, the filaments usually pubescent at least at base; carpels distinct or nearly so, the ovaries pubescent, the styles outcurved; fr follicular; seeds numerous; succulent perennials with dense, monocarpic rosettes of broad, flat, alternate, entire, ciliate, sessile lvs, acaulescent in the vegetative phase, and reproducing vegetatively by axillary stolons or seldom by division of the rosettes. 25, Eurasia.