This section is from the book "The Botanical Magazine; Or, Flower-Garden Displayed", by William Curtis. Also available from Amazon: The Botanical Magazine; or, Flower-Garden Displayed, Volume I.
Sempervivum Monanthes. Dwarf Houseleek.
Calyx 12-partitus. Petala 12. Capsulae 12. polyspermae.
SEMPERVIVUM monanthes foliis teretibus clavatis confertis, pedunculis nudis subunifloris, nectariis obcordatis. Aiton. Hort. Kew.
It appears from the Hortus Kewensis, the publication of which is daily expected, that the plant here figured was first brought to this country from the Canary Islands, by Mr. Francis Masson, in the year 1777.
It is highly deserving the notice of the Botanist, not only as being by far the least species of the genus, but on account of its Nectaria; these, though not mentioned by Linnaeus in his character of the genus, have been described by other authors, particularly Jacquin and Haller; and though not present in most, and but faintly visible in a few species of Sempervivum, in this plant form a principal part of the fructification; they are usually seven in number, but vary from six to eight.
In the specimens we have examined, and which perhaps have been rendered luxuriant by culture, the number of stamina has been from twelve to sixteen; of styles, from six to eight; of flowers on the same stalk, from one to eight.
It flowers during most of the summer months, succeeds very well with the common treatment of a greenhouse plant in the summer, but does best in a dry stove in the winter.
Is readily increased by parting its roots.